From d89d524570af90d165dc891d02aeec565c9d93da Mon Sep 17 00:00:00 2001 From: Jacob Barthelmeh Date: Thu, 19 Mar 2015 11:40:41 -0600 Subject: [PATCH 1/2] initial ed25519 implementation --- configure.ac | 29 +- src/include.am | 13 +- wolfcrypt/benchmark/benchmark.c | 104 + wolfcrypt/src/ecc25519.c | 21 +- wolfcrypt/src/ed25519.c | 1015 +++++++++ .../src/{ecc25519_fe.c => fe_operations.c} | 1057 ++++++--- wolfcrypt/src/ge_operations.c | 1939 +++++++++++++++++ wolfcrypt/test/test.c | 434 +++- wolfssl/wolfcrypt/ecc25519.h | 2 +- wolfssl/wolfcrypt/ecc25519_fe.h | 61 - wolfssl/wolfcrypt/ecc25519_montgomery.h | 42 - wolfssl/wolfcrypt/ecc25519_pow225521.h | 46 - wolfssl/wolfcrypt/ed25519.h | 94 + wolfssl/wolfcrypt/fe_operations.h | 67 + wolfssl/wolfcrypt/ge_operations.h | 106 + wolfssl/wolfcrypt/include.am | 6 +- 16 files changed, 4532 insertions(+), 504 deletions(-) create mode 100644 wolfcrypt/src/ed25519.c rename wolfcrypt/src/{ecc25519_fe.c => fe_operations.c} (69%) create mode 100644 wolfcrypt/src/ge_operations.c delete mode 100644 wolfssl/wolfcrypt/ecc25519_fe.h delete mode 100644 wolfssl/wolfcrypt/ecc25519_montgomery.h delete mode 100644 wolfssl/wolfcrypt/ecc25519_pow225521.h create mode 100644 wolfssl/wolfcrypt/ed25519.h create mode 100644 wolfssl/wolfcrypt/fe_operations.h create mode 100644 wolfssl/wolfcrypt/ge_operations.h diff --git a/configure.ac b/configure.ac index 4f3d875cf66..d6af10bbfb9 100644 --- a/configure.ac +++ b/configure.ac @@ -643,6 +643,7 @@ AC_ARG_ENABLE([ecc25519], if test "$ENABLED_ECC25519" = "yes" then + ENABLED_FEMATH=yes AM_CFLAGS="$AM_CFLAGS -DHAVE_ECC25519" fi @@ -650,7 +651,31 @@ fi AM_CONDITIONAL([BUILD_ECC25519], [test "x$ENABLED_ECC25519" = "xyes"]) -# FP ECC, Fixed Point cache ECC +# ED25519 +AC_ARG_ENABLE([ed25519], + [ AS_HELP_STRING(--enable-ed25519 Enable ED25519 (default: disabled))], + [ ENABLED_ED25519=$enableval ], + [ ENABLED_ED25519=no ] + ) + + +if test "$ENABLED_ED25519" = "yes" +then + if test "$ENABLED_SHA512" = "no" + then + AC_MSG_ERROR([cannot enable ed25519 without enabling sha512.]) + fi + ENABLED_FEMATH=yes + ENABLED_GEMATH=yes + AM_CFLAGS="$AM_CFLAGS -DHAVE_ED25519" +fi + + +AM_CONDITIONAL([BUILD_ED25519], [test "x$ENABLED_ED25519" = "xyes"]) +AM_CONDITIONAL([BUILD_FEMATH], [test "x$ENABLED_FEMATH" = "xyes"]) +AM_CONDITIONAL([BUILD_GEMATH], [test "x$ENABLED_GEMATH" = "xyes"]) + +# FP ECC, Fixed Point cache ECC AC_ARG_ENABLE([fpecc], [ --enable-fpecc Enable Fixed Point cache ECC (default: disabled)], [ ENABLED_FPECC=$enableval ], @@ -1934,6 +1959,8 @@ echo " * RSA: $ENABLED_RSA" echo " * DSA: $ENABLED_DSA" echo " * DH: $ENABLED_DH" echo " * ECC: $ENABLED_ECC" +echo " * CURVE25519: $ENABLED_ECC25519" +echo " * ED25519: $ENABLED_ED25519" echo " * FPECC: $ENABLED_FPECC" echo " * ECC_ENCRYPT: $ENABLED_ECC_ENCRYPT" echo " * ASN: $ENABLED_ASN" diff --git a/src/include.am b/src/include.am index c7df1b3c9c3..faf0a21f02f 100644 --- a/src/include.am +++ b/src/include.am @@ -169,7 +169,18 @@ endif if BUILD_ECC25519 src_libwolfssl_la_SOURCES += wolfcrypt/src/ecc25519.c -src_libwolfssl_la_SOURCES += wolfcrypt/src/ecc25519_fe.c +endif + +if BUILD_ED25519 +src_libwolfssl_la_SOURCES += wolfcrypt/src/ed25519.c +endif + +if BUILD_FEMATH +src_libwolfssl_la_SOURCES += wolfcrypt/src/fe_operations.c +endif + +if BUILD_GEMATH +src_libwolfssl_la_SOURCES += wolfcrypt/src/ge_operations.c endif if BUILD_LIBZ diff --git a/wolfcrypt/benchmark/benchmark.c b/wolfcrypt/benchmark/benchmark.c index 3a0898b382c..38a7782023e 100644 --- a/wolfcrypt/benchmark/benchmark.c +++ b/wolfcrypt/benchmark/benchmark.c @@ -60,6 +60,9 @@ #ifdef HAVE_ECC25519 #include #endif +#ifdef HAVE_ED25519 + #include +#endif #include #ifdef HAVE_CAVIUM @@ -143,6 +146,10 @@ void bench_eccKeyAgree(void); void bench_ecc25519KeyGen(void); void bench_ecc25519KeyAgree(void); #endif +#ifdef HAVE_ED25519 +void bench_ed25519KeyGen(void); +void bench_ed25519KeySign(void); +#endif #ifdef HAVE_NTRU void bench_ntru(void); void bench_ntruKeyGen(void); @@ -354,6 +361,11 @@ int benchmark_test(void *args) bench_ecc25519KeyAgree(); #endif +#ifdef HAVE_ED25519 + bench_ed25519KeyGen(); + bench_ed25519KeySign(); +#endif + #if defined(HAVE_LOCAL_RNG) && (defined(HAVE_HASHDRBG) || defined(NO_RC4)) wc_FreeRng(&rng); #endif @@ -1704,6 +1716,98 @@ void bench_ecc25519KeyAgree(void) } #endif /* HAVE_ECC25519 */ +#ifdef HAVE_ED25519 +void bench_ed25519KeyGen(void) +{ + ed25519_key genKey; + double start, total, each, milliEach; + int i; + + /* 256 bit */ + start = current_time(1); + + for(i = 0; i < genTimes; i++) { + wc_ed25519_init(&genKey); + wc_ed25519_make_key(&rng, 32, &genKey); + wc_ed25519_free(&genKey); + } + + total = current_time(0) - start; + each = total / genTimes; /* per second */ + milliEach = each * 1000; /* millisconds */ + printf("\n"); + printf("ED25519 key generation %6.3f milliseconds, avg over %d" + " iterations\n", milliEach, genTimes); +} + + +void bench_ed25519KeySign(void) +{ + ed25519_key genKey, genKey2; + double start, total, each, milliEach; + int i, ret; + byte sig[ED25519_SIG_SIZE]; + byte digest[32]; + word32 x = 0; + + wc_ed25519_init(&genKey); + wc_ed25519_init(&genKey2); + + ret = wc_ed25519_make_key(&rng, ED25519_KEY_SIZE, &genKey); + if (ret != 0) { + printf("ed25519_make_key failed\n"); + return; + } + ret = wc_ed25519_make_key(&rng, ED25519_KEY_SIZE, &genKey2); + if (ret != 0) { + printf("ed25519_make_key failed\n"); + return; + } + + /* make dummy digest */ + for (i = 0; i < (int)sizeof(digest); i++) + digest[i] = (byte)i; + + + start = current_time(1); + + for(i = 0; i < agreeTimes; i++) { + x = sizeof(sig); + ret = wc_ed25519_sign_hash(digest, sizeof(digest), sig, &x, &genKey); + if (ret != 0) { + printf("ed25519_sign_hash failed\n"); + return; + } + } + + total = current_time(0) - start; + each = total / agreeTimes; /* per second */ + milliEach = each * 1000; /* millisconds */ + printf("ED25519 sign time %6.3f milliseconds, avg over %d" + " iterations\n", milliEach, agreeTimes); + + start = current_time(1); + + for(i = 0; i < agreeTimes; i++) { + int verify = 0; + ret = wc_ed25519_verify_hash(sig, x, digest, sizeof(digest), &verify, &genKey); + if (ret != 0 || verify != 1) { + printf("ed25519_verify_hash failed\n"); + return; + } + } + + total = current_time(0) - start; + each = total / agreeTimes; /* per second */ + milliEach = each * 1000; /* millisconds */ + printf("ED25519 verify time %6.3f milliseconds, avg over %d" + " iterations\n", milliEach, agreeTimes); + + wc_ed25519_free(&genKey2); + wc_ed25519_free(&genKey); +} +#endif /* HAVE_ED25519 */ + #ifdef _WIN32 diff --git a/wolfcrypt/src/ecc25519.c b/wolfcrypt/src/ecc25519.c index 253b01ae927..a2619f9077d 100644 --- a/wolfcrypt/src/ecc25519.c +++ b/wolfcrypt/src/ecc25519.c @@ -81,7 +81,26 @@ static int curve25519(unsigned char* q, unsigned char* n, unsigned char* p) fe_cswap(x2,x3,swap); fe_cswap(z2,z3,swap); swap = b; -#include + + /* montgomery */ + fe_sub(tmp0,x3,z3); + fe_sub(tmp1,x2,z2); + fe_add(x2,x2,z2); + fe_add(z2,x3,z3); + fe_mul(z3,tmp0,x2); + fe_mul(z2,z2,tmp1); + fe_sq(tmp0,tmp1); + fe_sq(tmp1,x2); + fe_add(x3,z3,z2); + fe_sub(z2,z3,z2); + fe_mul(x2,tmp1,tmp0); + fe_sub(tmp1,tmp1,tmp0); + fe_sq(z2,z2); + fe_mul121666(z3,tmp1); + fe_sq(x3,x3); + fe_add(tmp0,tmp0,z3); + fe_mul(z3,x1,z2); + fe_mul(z2,tmp1,tmp0); } fe_cswap(x2,x3,swap); fe_cswap(z2,z3,swap); diff --git a/wolfcrypt/src/ed25519.c b/wolfcrypt/src/ed25519.c new file mode 100644 index 00000000000..bc1df7df525 --- /dev/null +++ b/wolfcrypt/src/ed25519.c @@ -0,0 +1,1015 @@ +/* ed25519.c + * + * Copyright (C) 2006-2015 wolfSSL Inc. + * + * This file is part of wolfSSL. (formerly known as CyaSSL) + * + * wolfSSL is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * wolfSSL is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + + /* Based On Daniel J Bernstein's ed25519 Public Domain ref10 work. */ + +#ifdef HAVE_CONFIG_H + #include +#endif + +/* in case user set HAVE_ED25519 there */ +#include + +#ifdef HAVE_ED25519 + +#include +#include +#ifdef NO_INLINE + #include +#else + #include +#endif + + +void sc_reduce(byte* s); +void sc_muladd(byte* s, const byte* a, const byte* b, const byte* c); + +/* +Input: + s[0]+256*s[1]+...+256^63*s[63] = s + +Output: + s[0]+256*s[1]+...+256^31*s[31] = s mod l + where l = 2^252 + 27742317777372353535851937790883648493. + Overwrites s in place. +*/ + +void sc_reduce(byte* s) +{ + int64_t s0 = 2097151 & load_3(s); + int64_t s1 = 2097151 & (load_4(s + 2) >> 5); + int64_t s2 = 2097151 & (load_3(s + 5) >> 2); + int64_t s3 = 2097151 & (load_4(s + 7) >> 7); + int64_t s4 = 2097151 & (load_4(s + 10) >> 4); + int64_t s5 = 2097151 & (load_3(s + 13) >> 1); + int64_t s6 = 2097151 & (load_4(s + 15) >> 6); + int64_t s7 = 2097151 & (load_3(s + 18) >> 3); + int64_t s8 = 2097151 & load_3(s + 21); + int64_t s9 = 2097151 & (load_4(s + 23) >> 5); + int64_t s10 = 2097151 & (load_3(s + 26) >> 2); + int64_t s11 = 2097151 & (load_4(s + 28) >> 7); + int64_t s12 = 2097151 & (load_4(s + 31) >> 4); + int64_t s13 = 2097151 & (load_3(s + 34) >> 1); + int64_t s14 = 2097151 & (load_4(s + 36) >> 6); + int64_t s15 = 2097151 & (load_3(s + 39) >> 3); + int64_t s16 = 2097151 & load_3(s + 42); + int64_t s17 = 2097151 & (load_4(s + 44) >> 5); + int64_t s18 = 2097151 & (load_3(s + 47) >> 2); + int64_t s19 = 2097151 & (load_4(s + 49) >> 7); + int64_t s20 = 2097151 & (load_4(s + 52) >> 4); + int64_t s21 = 2097151 & (load_3(s + 55) >> 1); + int64_t s22 = 2097151 & (load_4(s + 57) >> 6); + int64_t s23 = (load_4(s + 60) >> 3); + int64_t carry0; + int64_t carry1; + int64_t carry2; + int64_t carry3; + int64_t carry4; + int64_t carry5; + int64_t carry6; + int64_t carry7; + int64_t carry8; + int64_t carry9; + int64_t carry10; + int64_t carry11; + int64_t carry12; + int64_t carry13; + int64_t carry14; + int64_t carry15; + int64_t carry16; + + s11 += s23 * 666643; + s12 += s23 * 470296; + s13 += s23 * 654183; + s14 -= s23 * 997805; + s15 += s23 * 136657; + s16 -= s23 * 683901; + s23 = 0; + + s10 += s22 * 666643; + s11 += s22 * 470296; + s12 += s22 * 654183; + s13 -= s22 * 997805; + s14 += s22 * 136657; + s15 -= s22 * 683901; + s22 = 0; + + s9 += s21 * 666643; + s10 += s21 * 470296; + s11 += s21 * 654183; + s12 -= s21 * 997805; + s13 += s21 * 136657; + s14 -= s21 * 683901; + s21 = 0; + + s8 += s20 * 666643; + s9 += s20 * 470296; + s10 += s20 * 654183; + s11 -= s20 * 997805; + s12 += s20 * 136657; + s13 -= s20 * 683901; + s20 = 0; + + s7 += s19 * 666643; + s8 += s19 * 470296; + s9 += s19 * 654183; + s10 -= s19 * 997805; + s11 += s19 * 136657; + s12 -= s19 * 683901; + s19 = 0; + + s6 += s18 * 666643; + s7 += s18 * 470296; + s8 += s18 * 654183; + s9 -= s18 * 997805; + s10 += s18 * 136657; + s11 -= s18 * 683901; + s18 = 0; + + carry6 = (s6 + (1<<20)) >> 21; s7 += carry6; s6 -= carry6 << 21; + carry8 = (s8 + (1<<20)) >> 21; s9 += carry8; s8 -= carry8 << 21; + carry10 = (s10 + (1<<20)) >> 21; s11 += carry10; s10 -= carry10 << 21; + carry12 = (s12 + (1<<20)) >> 21; s13 += carry12; s12 -= carry12 << 21; + carry14 = (s14 + (1<<20)) >> 21; s15 += carry14; s14 -= carry14 << 21; + carry16 = (s16 + (1<<20)) >> 21; s17 += carry16; s16 -= carry16 << 21; + + carry7 = (s7 + (1<<20)) >> 21; s8 += carry7; s7 -= carry7 << 21; + carry9 = (s9 + (1<<20)) >> 21; s10 += carry9; s9 -= carry9 << 21; + carry11 = (s11 + (1<<20)) >> 21; s12 += carry11; s11 -= carry11 << 21; + carry13 = (s13 + (1<<20)) >> 21; s14 += carry13; s13 -= carry13 << 21; + carry15 = (s15 + (1<<20)) >> 21; s16 += carry15; s15 -= carry15 << 21; + + s5 += s17 * 666643; + s6 += s17 * 470296; + s7 += s17 * 654183; + s8 -= s17 * 997805; + s9 += s17 * 136657; + s10 -= s17 * 683901; + s17 = 0; + + s4 += s16 * 666643; + s5 += s16 * 470296; + s6 += s16 * 654183; + s7 -= s16 * 997805; + s8 += s16 * 136657; + s9 -= s16 * 683901; + s16 = 0; + + s3 += s15 * 666643; + s4 += s15 * 470296; + s5 += s15 * 654183; + s6 -= s15 * 997805; + s7 += s15 * 136657; + s8 -= s15 * 683901; + s15 = 0; + + s2 += s14 * 666643; + s3 += s14 * 470296; + s4 += s14 * 654183; + s5 -= s14 * 997805; + s6 += s14 * 136657; + s7 -= s14 * 683901; + s14 = 0; + + s1 += s13 * 666643; + s2 += s13 * 470296; + s3 += s13 * 654183; + s4 -= s13 * 997805; + s5 += s13 * 136657; + s6 -= s13 * 683901; + s13 = 0; + + s0 += s12 * 666643; + s1 += s12 * 470296; + s2 += s12 * 654183; + s3 -= s12 * 997805; + s4 += s12 * 136657; + s5 -= s12 * 683901; + s12 = 0; + + carry0 = (s0 + (1<<20)) >> 21; s1 += carry0; s0 -= carry0 << 21; + carry2 = (s2 + (1<<20)) >> 21; s3 += carry2; s2 -= carry2 << 21; + carry4 = (s4 + (1<<20)) >> 21; s5 += carry4; s4 -= carry4 << 21; + carry6 = (s6 + (1<<20)) >> 21; s7 += carry6; s6 -= carry6 << 21; + carry8 = (s8 + (1<<20)) >> 21; s9 += carry8; s8 -= carry8 << 21; + carry10 = (s10 + (1<<20)) >> 21; s11 += carry10; s10 -= carry10 << 21; + + carry1 = (s1 + (1<<20)) >> 21; s2 += carry1; s1 -= carry1 << 21; + carry3 = (s3 + (1<<20)) >> 21; s4 += carry3; s3 -= carry3 << 21; + carry5 = (s5 + (1<<20)) >> 21; s6 += carry5; s5 -= carry5 << 21; + carry7 = (s7 + (1<<20)) >> 21; s8 += carry7; s7 -= carry7 << 21; + carry9 = (s9 + (1<<20)) >> 21; s10 += carry9; s9 -= carry9 << 21; + carry11 = (s11 + (1<<20)) >> 21; s12 += carry11; s11 -= carry11 << 21; + + s0 += s12 * 666643; + s1 += s12 * 470296; + s2 += s12 * 654183; + s3 -= s12 * 997805; + s4 += s12 * 136657; + s5 -= s12 * 683901; + s12 = 0; + + carry0 = s0 >> 21; s1 += carry0; s0 -= carry0 << 21; + carry1 = s1 >> 21; s2 += carry1; s1 -= carry1 << 21; + carry2 = s2 >> 21; s3 += carry2; s2 -= carry2 << 21; + carry3 = s3 >> 21; s4 += carry3; s3 -= carry3 << 21; + carry4 = s4 >> 21; s5 += carry4; s4 -= carry4 << 21; + carry5 = s5 >> 21; s6 += carry5; s5 -= carry5 << 21; + carry6 = s6 >> 21; s7 += carry6; s6 -= carry6 << 21; + carry7 = s7 >> 21; s8 += carry7; s7 -= carry7 << 21; + carry8 = s8 >> 21; s9 += carry8; s8 -= carry8 << 21; + carry9 = s9 >> 21; s10 += carry9; s9 -= carry9 << 21; + carry10 = s10 >> 21; s11 += carry10; s10 -= carry10 << 21; + carry11 = s11 >> 21; s12 += carry11; s11 -= carry11 << 21; + + s0 += s12 * 666643; + s1 += s12 * 470296; + s2 += s12 * 654183; + s3 -= s12 * 997805; + s4 += s12 * 136657; + s5 -= s12 * 683901; + s12 = 0; + + carry0 = s0 >> 21; s1 += carry0; s0 -= carry0 << 21; + carry1 = s1 >> 21; s2 += carry1; s1 -= carry1 << 21; + carry2 = s2 >> 21; s3 += carry2; s2 -= carry2 << 21; + carry3 = s3 >> 21; s4 += carry3; s3 -= carry3 << 21; + carry4 = s4 >> 21; s5 += carry4; s4 -= carry4 << 21; + carry5 = s5 >> 21; s6 += carry5; s5 -= carry5 << 21; + carry6 = s6 >> 21; s7 += carry6; s6 -= carry6 << 21; + carry7 = s7 >> 21; s8 += carry7; s7 -= carry7 << 21; + carry8 = s8 >> 21; s9 += carry8; s8 -= carry8 << 21; + carry9 = s9 >> 21; s10 += carry9; s9 -= carry9 << 21; + carry10 = s10 >> 21; s11 += carry10; s10 -= carry10 << 21; + + s[0] = s0 >> 0; + s[1] = s0 >> 8; + s[2] = (s0 >> 16) | (s1 << 5); + s[3] = s1 >> 3; + s[4] = s1 >> 11; + s[5] = (s1 >> 19) | (s2 << 2); + s[6] = s2 >> 6; + s[7] = (s2 >> 14) | (s3 << 7); + s[8] = s3 >> 1; + s[9] = s3 >> 9; + s[10] = (s3 >> 17) | (s4 << 4); + s[11] = s4 >> 4; + s[12] = s4 >> 12; + s[13] = (s4 >> 20) | (s5 << 1); + s[14] = s5 >> 7; + s[15] = (s5 >> 15) | (s6 << 6); + s[16] = s6 >> 2; + s[17] = s6 >> 10; + s[18] = (s6 >> 18) | (s7 << 3); + s[19] = s7 >> 5; + s[20] = s7 >> 13; + s[21] = s8 >> 0; + s[22] = s8 >> 8; + s[23] = (s8 >> 16) | (s9 << 5); + s[24] = s9 >> 3; + s[25] = s9 >> 11; + s[26] = (s9 >> 19) | (s10 << 2); + s[27] = s10 >> 6; + s[28] = (s10 >> 14) | (s11 << 7); + s[29] = s11 >> 1; + s[30] = s11 >> 9; + s[31] = s11 >> 17; + + /* hush warnings after setting values to 0 */ + (void)s12; + (void)s13; + (void)s14; + (void)s15; + (void)s16; + (void)s17; + (void)s18; + (void)s19; + (void)s20; + (void)s21; + (void)s22; + (void)s23; +} + + +/* +Input: + a[0]+256*a[1]+...+256^31*a[31] = a + b[0]+256*b[1]+...+256^31*b[31] = b + c[0]+256*c[1]+...+256^31*c[31] = c + +Output: + s[0]+256*s[1]+...+256^31*s[31] = (ab+c) mod l + where l = 2^252 + 27742317777372353535851937790883648493. +*/ + +void sc_muladd(byte* s, const byte* a, const byte* b, const byte* c) +{ + int64_t a0 = 2097151 & load_3(a); + int64_t a1 = 2097151 & (load_4(a + 2) >> 5); + int64_t a2 = 2097151 & (load_3(a + 5) >> 2); + int64_t a3 = 2097151 & (load_4(a + 7) >> 7); + int64_t a4 = 2097151 & (load_4(a + 10) >> 4); + int64_t a5 = 2097151 & (load_3(a + 13) >> 1); + int64_t a6 = 2097151 & (load_4(a + 15) >> 6); + int64_t a7 = 2097151 & (load_3(a + 18) >> 3); + int64_t a8 = 2097151 & load_3(a + 21); + int64_t a9 = 2097151 & (load_4(a + 23) >> 5); + int64_t a10 = 2097151 & (load_3(a + 26) >> 2); + int64_t a11 = (load_4(a + 28) >> 7); + int64_t b0 = 2097151 & load_3(b); + int64_t b1 = 2097151 & (load_4(b + 2) >> 5); + int64_t b2 = 2097151 & (load_3(b + 5) >> 2); + int64_t b3 = 2097151 & (load_4(b + 7) >> 7); + int64_t b4 = 2097151 & (load_4(b + 10) >> 4); + int64_t b5 = 2097151 & (load_3(b + 13) >> 1); + int64_t b6 = 2097151 & (load_4(b + 15) >> 6); + int64_t b7 = 2097151 & (load_3(b + 18) >> 3); + int64_t b8 = 2097151 & load_3(b + 21); + int64_t b9 = 2097151 & (load_4(b + 23) >> 5); + int64_t b10 = 2097151 & (load_3(b + 26) >> 2); + int64_t b11 = (load_4(b + 28) >> 7); + int64_t c0 = 2097151 & load_3(c); + int64_t c1 = 2097151 & (load_4(c + 2) >> 5); + int64_t c2 = 2097151 & (load_3(c + 5) >> 2); + int64_t c3 = 2097151 & (load_4(c + 7) >> 7); + int64_t c4 = 2097151 & (load_4(c + 10) >> 4); + int64_t c5 = 2097151 & (load_3(c + 13) >> 1); + int64_t c6 = 2097151 & (load_4(c + 15) >> 6); + int64_t c7 = 2097151 & (load_3(c + 18) >> 3); + int64_t c8 = 2097151 & load_3(c + 21); + int64_t c9 = 2097151 & (load_4(c + 23) >> 5); + int64_t c10 = 2097151 & (load_3(c + 26) >> 2); + int64_t c11 = (load_4(c + 28) >> 7); + int64_t s0; + int64_t s1; + int64_t s2; + int64_t s3; + int64_t s4; + int64_t s5; + int64_t s6; + int64_t s7; + int64_t s8; + int64_t s9; + int64_t s10; + int64_t s11; + int64_t s12; + int64_t s13; + int64_t s14; + int64_t s15; + int64_t s16; + int64_t s17; + int64_t s18; + int64_t s19; + int64_t s20; + int64_t s21; + int64_t s22; + int64_t s23; + int64_t carry0; + int64_t carry1; + int64_t carry2; + int64_t carry3; + int64_t carry4; + int64_t carry5; + int64_t carry6; + int64_t carry7; + int64_t carry8; + int64_t carry9; + int64_t carry10; + int64_t carry11; + int64_t carry12; + int64_t carry13; + int64_t carry14; + int64_t carry15; + int64_t carry16; + int64_t carry17; + int64_t carry18; + int64_t carry19; + int64_t carry20; + int64_t carry21; + int64_t carry22; + + s0 = c0 + a0*b0; + s1 = c1 + a0*b1 + a1*b0; + s2 = c2 + a0*b2 + a1*b1 + a2*b0; + s3 = c3 + a0*b3 + a1*b2 + a2*b1 + a3*b0; + s4 = c4 + a0*b4 + a1*b3 + a2*b2 + a3*b1 + a4*b0; + s5 = c5 + a0*b5 + a1*b4 + a2*b3 + a3*b2 + a4*b1 + a5*b0; + s6 = c6 + a0*b6 + a1*b5 + a2*b4 + a3*b3 + a4*b2 + a5*b1 + a6*b0; + s7 = c7 + a0*b7 + a1*b6 + a2*b5 + a3*b4 + a4*b3 + a5*b2 + a6*b1 + a7*b0; + s8 = c8 + a0*b8 + a1*b7 + a2*b6 + a3*b5 + a4*b4 + a5*b3 + a6*b2 + a7*b1 + a8*b0; + s9 = c9 + a0*b9 + a1*b8 + a2*b7 + a3*b6 + a4*b5 + a5*b4 + a6*b3 + a7*b2 + a8*b1 + a9*b0; + s10 = c10 + a0*b10 + a1*b9 + a2*b8 + a3*b7 + a4*b6 + a5*b5 + a6*b4 + a7*b3 + a8*b2 + a9*b1 + a10*b0; + s11 = c11 + a0*b11 + a1*b10 + a2*b9 + a3*b8 + a4*b7 + a5*b6 + a6*b5 + a7*b4 + a8*b3 + a9*b2 + a10*b1 + a11*b0; + s12 = a1*b11 + a2*b10 + a3*b9 + a4*b8 + a5*b7 + a6*b6 + a7*b5 + a8*b4 + a9*b3 + a10*b2 + a11*b1; + s13 = a2*b11 + a3*b10 + a4*b9 + a5*b8 + a6*b7 + a7*b6 + a8*b5 + a9*b4 + a10*b3 + a11*b2; + s14 = a3*b11 + a4*b10 + a5*b9 + a6*b8 + a7*b7 + a8*b6 + a9*b5 + a10*b4 + a11*b3; + s15 = a4*b11 + a5*b10 + a6*b9 + a7*b8 + a8*b7 + a9*b6 + a10*b5 + a11*b4; + s16 = a5*b11 + a6*b10 + a7*b9 + a8*b8 + a9*b7 + a10*b6 + a11*b5; + s17 = a6*b11 + a7*b10 + a8*b9 + a9*b8 + a10*b7 + a11*b6; + s18 = a7*b11 + a8*b10 + a9*b9 + a10*b8 + a11*b7; + s19 = a8*b11 + a9*b10 + a10*b9 + a11*b8; + s20 = a9*b11 + a10*b10 + a11*b9; + s21 = a10*b11 + a11*b10; + s22 = a11*b11; + s23 = 0; + + carry0 = (s0 + (1<<20)) >> 21; s1 += carry0; s0 -= carry0 << 21; + carry2 = (s2 + (1<<20)) >> 21; s3 += carry2; s2 -= carry2 << 21; + carry4 = (s4 + (1<<20)) >> 21; s5 += carry4; s4 -= carry4 << 21; + carry6 = (s6 + (1<<20)) >> 21; s7 += carry6; s6 -= carry6 << 21; + carry8 = (s8 + (1<<20)) >> 21; s9 += carry8; s8 -= carry8 << 21; + carry10 = (s10 + (1<<20)) >> 21; s11 += carry10; s10 -= carry10 << 21; + carry12 = (s12 + (1<<20)) >> 21; s13 += carry12; s12 -= carry12 << 21; + carry14 = (s14 + (1<<20)) >> 21; s15 += carry14; s14 -= carry14 << 21; + carry16 = (s16 + (1<<20)) >> 21; s17 += carry16; s16 -= carry16 << 21; + carry18 = (s18 + (1<<20)) >> 21; s19 += carry18; s18 -= carry18 << 21; + carry20 = (s20 + (1<<20)) >> 21; s21 += carry20; s20 -= carry20 << 21; + carry22 = (s22 + (1<<20)) >> 21; s23 += carry22; s22 -= carry22 << 21; + + carry1 = (s1 + (1<<20)) >> 21; s2 += carry1; s1 -= carry1 << 21; + carry3 = (s3 + (1<<20)) >> 21; s4 += carry3; s3 -= carry3 << 21; + carry5 = (s5 + (1<<20)) >> 21; s6 += carry5; s5 -= carry5 << 21; + carry7 = (s7 + (1<<20)) >> 21; s8 += carry7; s7 -= carry7 << 21; + carry9 = (s9 + (1<<20)) >> 21; s10 += carry9; s9 -= carry9 << 21; + carry11 = (s11 + (1<<20)) >> 21; s12 += carry11; s11 -= carry11 << 21; + carry13 = (s13 + (1<<20)) >> 21; s14 += carry13; s13 -= carry13 << 21; + carry15 = (s15 + (1<<20)) >> 21; s16 += carry15; s15 -= carry15 << 21; + carry17 = (s17 + (1<<20)) >> 21; s18 += carry17; s17 -= carry17 << 21; + carry19 = (s19 + (1<<20)) >> 21; s20 += carry19; s19 -= carry19 << 21; + carry21 = (s21 + (1<<20)) >> 21; s22 += carry21; s21 -= carry21 << 21; + + s11 += s23 * 666643; + s12 += s23 * 470296; + s13 += s23 * 654183; + s14 -= s23 * 997805; + s15 += s23 * 136657; + s16 -= s23 * 683901; + s23 = 0; + + s10 += s22 * 666643; + s11 += s22 * 470296; + s12 += s22 * 654183; + s13 -= s22 * 997805; + s14 += s22 * 136657; + s15 -= s22 * 683901; + s22 = 0; + + s9 += s21 * 666643; + s10 += s21 * 470296; + s11 += s21 * 654183; + s12 -= s21 * 997805; + s13 += s21 * 136657; + s14 -= s21 * 683901; + s21 = 0; + + s8 += s20 * 666643; + s9 += s20 * 470296; + s10 += s20 * 654183; + s11 -= s20 * 997805; + s12 += s20 * 136657; + s13 -= s20 * 683901; + s20 = 0; + + s7 += s19 * 666643; + s8 += s19 * 470296; + s9 += s19 * 654183; + s10 -= s19 * 997805; + s11 += s19 * 136657; + s12 -= s19 * 683901; + s19 = 0; + + s6 += s18 * 666643; + s7 += s18 * 470296; + s8 += s18 * 654183; + s9 -= s18 * 997805; + s10 += s18 * 136657; + s11 -= s18 * 683901; + s18 = 0; + + carry6 = (s6 + (1<<20)) >> 21; s7 += carry6; s6 -= carry6 << 21; + carry8 = (s8 + (1<<20)) >> 21; s9 += carry8; s8 -= carry8 << 21; + carry10 = (s10 + (1<<20)) >> 21; s11 += carry10; s10 -= carry10 << 21; + carry12 = (s12 + (1<<20)) >> 21; s13 += carry12; s12 -= carry12 << 21; + carry14 = (s14 + (1<<20)) >> 21; s15 += carry14; s14 -= carry14 << 21; + carry16 = (s16 + (1<<20)) >> 21; s17 += carry16; s16 -= carry16 << 21; + + carry7 = (s7 + (1<<20)) >> 21; s8 += carry7; s7 -= carry7 << 21; + carry9 = (s9 + (1<<20)) >> 21; s10 += carry9; s9 -= carry9 << 21; + carry11 = (s11 + (1<<20)) >> 21; s12 += carry11; s11 -= carry11 << 21; + carry13 = (s13 + (1<<20)) >> 21; s14 += carry13; s13 -= carry13 << 21; + carry15 = (s15 + (1<<20)) >> 21; s16 += carry15; s15 -= carry15 << 21; + + s5 += s17 * 666643; + s6 += s17 * 470296; + s7 += s17 * 654183; + s8 -= s17 * 997805; + s9 += s17 * 136657; + s10 -= s17 * 683901; + s17 = 0; + + s4 += s16 * 666643; + s5 += s16 * 470296; + s6 += s16 * 654183; + s7 -= s16 * 997805; + s8 += s16 * 136657; + s9 -= s16 * 683901; + s16 = 0; + + s3 += s15 * 666643; + s4 += s15 * 470296; + s5 += s15 * 654183; + s6 -= s15 * 997805; + s7 += s15 * 136657; + s8 -= s15 * 683901; + s15 = 0; + + s2 += s14 * 666643; + s3 += s14 * 470296; + s4 += s14 * 654183; + s5 -= s14 * 997805; + s6 += s14 * 136657; + s7 -= s14 * 683901; + s14 = 0; + + s1 += s13 * 666643; + s2 += s13 * 470296; + s3 += s13 * 654183; + s4 -= s13 * 997805; + s5 += s13 * 136657; + s6 -= s13 * 683901; + s13 = 0; + + s0 += s12 * 666643; + s1 += s12 * 470296; + s2 += s12 * 654183; + s3 -= s12 * 997805; + s4 += s12 * 136657; + s5 -= s12 * 683901; + s12 = 0; + + carry0 = (s0 + (1<<20)) >> 21; s1 += carry0; s0 -= carry0 << 21; + carry2 = (s2 + (1<<20)) >> 21; s3 += carry2; s2 -= carry2 << 21; + carry4 = (s4 + (1<<20)) >> 21; s5 += carry4; s4 -= carry4 << 21; + carry6 = (s6 + (1<<20)) >> 21; s7 += carry6; s6 -= carry6 << 21; + carry8 = (s8 + (1<<20)) >> 21; s9 += carry8; s8 -= carry8 << 21; + carry10 = (s10 + (1<<20)) >> 21; s11 += carry10; s10 -= carry10 << 21; + + carry1 = (s1 + (1<<20)) >> 21; s2 += carry1; s1 -= carry1 << 21; + carry3 = (s3 + (1<<20)) >> 21; s4 += carry3; s3 -= carry3 << 21; + carry5 = (s5 + (1<<20)) >> 21; s6 += carry5; s5 -= carry5 << 21; + carry7 = (s7 + (1<<20)) >> 21; s8 += carry7; s7 -= carry7 << 21; + carry9 = (s9 + (1<<20)) >> 21; s10 += carry9; s9 -= carry9 << 21; + carry11 = (s11 + (1<<20)) >> 21; s12 += carry11; s11 -= carry11 << 21; + + s0 += s12 * 666643; + s1 += s12 * 470296; + s2 += s12 * 654183; + s3 -= s12 * 997805; + s4 += s12 * 136657; + s5 -= s12 * 683901; + s12 = 0; + + carry0 = s0 >> 21; s1 += carry0; s0 -= carry0 << 21; + carry1 = s1 >> 21; s2 += carry1; s1 -= carry1 << 21; + carry2 = s2 >> 21; s3 += carry2; s2 -= carry2 << 21; + carry3 = s3 >> 21; s4 += carry3; s3 -= carry3 << 21; + carry4 = s4 >> 21; s5 += carry4; s4 -= carry4 << 21; + carry5 = s5 >> 21; s6 += carry5; s5 -= carry5 << 21; + carry6 = s6 >> 21; s7 += carry6; s6 -= carry6 << 21; + carry7 = s7 >> 21; s8 += carry7; s7 -= carry7 << 21; + carry8 = s8 >> 21; s9 += carry8; s8 -= carry8 << 21; + carry9 = s9 >> 21; s10 += carry9; s9 -= carry9 << 21; + carry10 = s10 >> 21; s11 += carry10; s10 -= carry10 << 21; + carry11 = s11 >> 21; s12 += carry11; s11 -= carry11 << 21; + + s0 += s12 * 666643; + s1 += s12 * 470296; + s2 += s12 * 654183; + s3 -= s12 * 997805; + s4 += s12 * 136657; + s5 -= s12 * 683901; + s12 = 0; + + carry0 = s0 >> 21; s1 += carry0; s0 -= carry0 << 21; + carry1 = s1 >> 21; s2 += carry1; s1 -= carry1 << 21; + carry2 = s2 >> 21; s3 += carry2; s2 -= carry2 << 21; + carry3 = s3 >> 21; s4 += carry3; s3 -= carry3 << 21; + carry4 = s4 >> 21; s5 += carry4; s4 -= carry4 << 21; + carry5 = s5 >> 21; s6 += carry5; s5 -= carry5 << 21; + carry6 = s6 >> 21; s7 += carry6; s6 -= carry6 << 21; + carry7 = s7 >> 21; s8 += carry7; s7 -= carry7 << 21; + carry8 = s8 >> 21; s9 += carry8; s8 -= carry8 << 21; + carry9 = s9 >> 21; s10 += carry9; s9 -= carry9 << 21; + carry10 = s10 >> 21; s11 += carry10; s10 -= carry10 << 21; + + s[0] = s0 >> 0; + s[1] = s0 >> 8; + s[2] = (s0 >> 16) | (s1 << 5); + s[3] = s1 >> 3; + s[4] = s1 >> 11; + s[5] = (s1 >> 19) | (s2 << 2); + s[6] = s2 >> 6; + s[7] = (s2 >> 14) | (s3 << 7); + s[8] = s3 >> 1; + s[9] = s3 >> 9; + s[10] = (s3 >> 17) | (s4 << 4); + s[11] = s4 >> 4; + s[12] = s4 >> 12; + s[13] = (s4 >> 20) | (s5 << 1); + s[14] = s5 >> 7; + s[15] = (s5 >> 15) | (s6 << 6); + s[16] = s6 >> 2; + s[17] = s6 >> 10; + s[18] = (s6 >> 18) | (s7 << 3); + s[19] = s7 >> 5; + s[20] = s7 >> 13; + s[21] = s8 >> 0; + s[22] = s8 >> 8; + s[23] = (s8 >> 16) | (s9 << 5); + s[24] = s9 >> 3; + s[25] = s9 >> 11; + s[26] = (s9 >> 19) | (s10 << 2); + s[27] = s10 >> 6; + s[28] = (s10 >> 14) | (s11 << 7); + s[29] = s11 >> 1; + s[30] = s11 >> 9; + s[31] = s11 >> 17; + + /* hush warnings after setting values to 0 */ + (void)s12; + (void)s13; + (void)s14; + (void)s15; + (void)s16; + (void)s17; + (void)s18; + (void)s19; + (void)s20; + (void)s21; + (void)s22; + (void)s23; +} + + +/* + generate an ed25519 key pair. + returns 0 on success + */ +int wc_ed25519_make_key(RNG* rng, int keySz, ed25519_key* key) +{ + byte az[64]; + ge_p3 A; + int ret; + + if (rng == NULL || key == NULL) + return BAD_FUNC_ARG; + + /* ed25519 has 32 byte key sizes */ + if (keySz != ED25519_KEY_SIZE) + return BAD_FUNC_ARG; + + ret = 0; + ret |= wc_RNG_GenerateBlock(rng, key->k, 32); + ret |= wc_Sha512Hash(key->k, 32, az); + az[0] &= 248; + az[31] &= 63; + az[31] |= 64; + + ge_scalarmult_base(&A, az); + ge_p3_tobytes(key->p, &A); + XMEMMOVE(key->k + 32, key->p, 32); + + return ret; +} + + +/* + in contains the message to sign + inlen is the length of the message to sign + out is the buffer to write the signature + outlen [in/out] input size of out buf + output gets set as the final length of out + key is the ed25519 key to use when signing + return 0 on success + */ +int wc_ed25519_sign_hash(const byte* in, word32 inlen, byte* out, + word32 *outlen, ed25519_key* key) +{ + int ret = 0; + byte nonce[64]; + byte hram[64]; + byte az[64]; + word32 sigSz; + ge_p3 R; + Sha512 sha; + + /* sanity check on arguments */ + if (in == NULL || out == NULL || outlen == NULL || key == NULL) + return BAD_FUNC_ARG; + + /* check and set up out length */ + ret = 0; + sigSz = wc_ed25519_sig_size(key); + if (*outlen < sigSz) + return BAD_FUNC_ARG; + *outlen = sigSz; + + /* create nonce to use */ + ret |= wc_Sha512Hash(key->k,32,az); + az[0] &= 248; + az[31] &= 63; + az[31] |= 64; + ret |= wc_InitSha512(&sha); + ret |= wc_Sha512Update(&sha, az + 32, 32); + ret |= wc_Sha512Update(&sha, in, inlen); + ret |= wc_Sha512Final(&sha, nonce); + sc_reduce(nonce); + ge_scalarmult_base(&R,nonce); + ge_p3_tobytes(out,&R); + + /* hash scalarmult of nonce + public key + message */ + ret |= wc_InitSha512(&sha); + ret |= wc_Sha512Update(&sha, out, 32); + ret |= wc_Sha512Update(&sha, key->p, 32); + ret |= wc_Sha512Update(&sha, in, inlen); + ret |= wc_Sha512Final(&sha, hram); + sc_reduce(hram); + sc_muladd(out + 32, hram, az, nonce); + + return ret; +} + + +/* + sig is array of bytes containing the signature + siglen is the length of sig byte array + hash the array of bytes containing the message + hashlen length of hash array + stat will be 1 on successful verify and 0 on unsuccessful +*/ +int wc_ed25519_verify_hash(byte* sig, word32 siglen, const byte* hash, + word32 hashlen, int* stat, ed25519_key* key) +{ + int ret; + word32 sigSz; + byte h[64]; + byte rcheck[32]; + Sha512 sha; + ge_p3 A; + ge_p2 R; + + /* sanity check on arguments */ + if (sig == NULL || hash == NULL || stat == NULL || key == NULL) + return BAD_FUNC_ARG; + + ret = 0; + *stat = 0; + sigSz = wc_ed25519_size(key); + + /* check on basics needed to verify signature */ + if (siglen < sigSz) + return BAD_FUNC_ARG; + if (sig[63] & 224) + return BAD_FUNC_ARG; + if (ge_frombytes_negate_vartime(&A, key->p) != 0) + return BAD_FUNC_ARG; + + /* reduce hash of r + public key + message */ + ret |= wc_InitSha512(&sha); + ret |= wc_Sha512Update(&sha, sig, 32); + ret |= wc_Sha512Update(&sha, key->p, 32); + ret |= wc_Sha512Update(&sha, hash, hashlen); + ret |= wc_Sha512Final(&sha, h); + sc_reduce(h); + + /* scalarmult placed in R using hash + A + s */ + ge_double_scalarmult_vartime(&R, h, &A, sig + 32); + ge_tobytes(rcheck,&R); + + /* comparison of r created to r in sig */ + ret |= ConstantCompare(rcheck, sig, 32); + *stat = (ret == 0)? 1: 0; + + return ret; +} + + +/* initialize information and memory for key */ +int wc_ed25519_init(ed25519_key* key) +{ + if (key == NULL) + return BAD_FUNC_ARG; + + ForceZero(key, sizeof(ed25519_key)); + + return 0; +} + + +/* clear memory of key */ +void wc_ed25519_free(ed25519_key* key) +{ + if (key == NULL) + return; + + ForceZero(key, sizeof(ed25519_key)); +} + + +/* + outLen should contain the size of out buffer when input. outLen is than set + to the final output length. + returns 0 on success + */ +int wc_ed25519_export_public(ed25519_key* key, byte* out, word32* outLen) +{ + word32 keySz; + + if (key == NULL || out == NULL || outLen == NULL) + return BAD_FUNC_ARG; + + keySz = wc_ed25519_size(key); + if (*outLen < keySz) { + *outLen = keySz; + return BUFFER_E; + } + *outLen = keySz; + XMEMCPY(out, key->p, keySz); + + return 0; +} + + +/* internal function for importing uncompressed public keys */ +static int compress_key(byte* out, const byte* xIn, const byte* yIn, + word32 keySz) +{ + fe x,y,z; + ge_p3 g; + byte bArray[ED25519_KEY_SIZE]; + word32 i; + + fe_0(x); + fe_0(y); + fe_1(z); + fe_frombytes(x, xIn); + fe_frombytes(y, yIn); + + fe_copy(g.X, x); + fe_copy(g.Y, y); + fe_copy(g.Z, z); + + ge_p3_tobytes(bArray, &g); + + for (i = 0; i < keySz; i++) { + out[keySz - 1 - i] = bArray[i]; + } + + return 0; +} + + +/* + Imports a compressed/uncompressed public key. + in the byte array containing the public key + inLen the length of the byte array being passed in + key ed25519 key struct to put the public key in + */ +int wc_ed25519_import_public(const byte* in, word32 inLen, ed25519_key* key) +{ + word32 keySz; + int ret; + + if (in == NULL || key == NULL) + return BAD_FUNC_ARG; + + keySz = wc_ed25519_size(key); + + if (inLen < keySz) + return BAD_FUNC_ARG; + + /* compressed prefix according to draft + http://www.ietf.org/id/draft-koch-eddsa-for-openpgp-02.txt */ + if (in[0] == 0x40) { + /* key is stored in compressed format so just copy in */ + XMEMCPY(key->p, (in + 1), keySz); + return 0; + } + + /* importing uncompressed public key */ + if (in[0] == 0x04) { + /* pass in (x,y) and store compressed key */ + ret = compress_key(key->p, (in+1), (in+1+keySz), keySz); + return ret; + } + + /* if not specified compressed or uncompressed check key size + if key size is equal to compressed key size copy in key */ + if (inLen == keySz) { + XMEMCPY(key->p, in, keySz); + return 0; + } + + /* bad public key format */ + return BAD_FUNC_ARG; +} + + +/* + For importing a private key and its associated public key. + */ +int wc_ed25519_import_private_key(const byte* priv, word32 privSz, + const byte* pub, word32 pubSz, ed25519_key* key) +{ + word32 keySz; + int ret; + + if (priv == NULL || pub == NULL || key == NULL) + return BAD_FUNC_ARG; + + keySz = wc_ed25519_size(key); + + /* key size check */ + if (privSz < keySz || pubSz < keySz) + return BAD_FUNC_ARG; + + XMEMCPY(key->k, priv, keySz); + ret = wc_ed25519_import_public(pub, pubSz, key); + XMEMCPY((key->k + keySz), key->p, keySz); + + return ret; +} + + +/* + outLen should contain the size of out buffer when input. outLen is than set + to the final output length. + returns 0 on success + */ +int wc_ed25519_export_private_only(ed25519_key* key, byte* out, word32* outLen) +{ + word32 keySz; + + /* sanity checks on arguments */ + if (key == NULL || out == NULL || outLen == NULL) + return BAD_FUNC_ARG; + + keySz = wc_ed25519_size(key); + if (*outLen < keySz) { + *outLen = keySz; + return BUFFER_E; + } + *outLen = keySz; + XMEMCPY(out, key->k, keySz); + + return 0; +} + + +/* is the compressed key size in bytes */ +int wc_ed25519_size(ed25519_key* key) +{ + word32 keySz; + + if (key == NULL) + return BAD_FUNC_ARG; + + keySz = ED25519_KEY_SIZE; + + return keySz; +} + + +/* returns the size of signature in bytes */ +int wc_ed25519_sig_size(ed25519_key* key) +{ + word32 sigSz; + + if (key == NULL) + return BAD_FUNC_ARG; + + sigSz = ED25519_SIG_SIZE; + + return sigSz; +} + +#endif /* HAVE_ED25519 */ + diff --git a/wolfcrypt/src/ecc25519_fe.c b/wolfcrypt/src/fe_operations.c similarity index 69% rename from wolfcrypt/src/ecc25519_fe.c rename to wolfcrypt/src/fe_operations.c index a5b28cc7d76..5e60eb71f77 100644 --- a/wolfcrypt/src/ecc25519_fe.c +++ b/wolfcrypt/src/fe_operations.c @@ -1,4 +1,4 @@ -/* ecc25519_fe.c +/* fe_operations.c * * Copyright (C) 2006-2015 wolfSSL Inc. * @@ -21,25 +21,59 @@ /* Based On Daniel J Bernstein's curve25519 Public Domain ref10 work. */ - #ifdef HAVE_CONFIG_H #include #endif #include -#ifdef HAVE_ECC25519 +#if defined(HAVE_ED25519) || defined(HAVE_ECC25519) -#include +#include #include +#ifdef NO_INLINE + #include +#else + #include +#endif + /* -h = 0 +fe means field element. +Here the field is \Z/(2^255-19). +An element t, entries t[0]...t[9], represents the integer +t[0]+2^26 t[1]+2^51 t[2]+2^77 t[3]+2^102 t[4]+...+2^230 t[9]. +Bounds on each t[i] vary depending on context. */ -void fe_0(fe h) +uint64_t load_3(const unsigned char *in) { - h[0] = 0; + uint64_t result; + result = (uint64_t) in[0]; + result |= ((uint64_t) in[1]) << 8; + result |= ((uint64_t) in[2]) << 16; + return result; +} + + +uint64_t load_4(const unsigned char *in) +{ + uint64_t result; + result = (uint64_t) in[0]; + result |= ((uint64_t) in[1]) << 8; + result |= ((uint64_t) in[2]) << 16; + result |= ((uint64_t) in[3]) << 24; + return result; +} + + +/* +h = 1 +*/ + +void fe_1(fe h) +{ + h[0] = 1; h[1] = 0; h[2] = 0; h[3] = 0; @@ -52,14 +86,13 @@ void fe_0(fe h) } - /* -h = 1 +h = 0 */ -void fe_1(fe h) +void fe_0(fe h) { - h[0] = 1; + h[0] = 0; h[1] = 0; h[2] = 0; h[3] = 0; @@ -72,6 +105,154 @@ void fe_1(fe h) } +/* +h = f * f +Can overlap h with f. + +Preconditions: + |f| bounded by 1.65*2^26,1.65*2^25,1.65*2^26,1.65*2^25,etc. + +Postconditions: + |h| bounded by 1.01*2^25,1.01*2^24,1.01*2^25,1.01*2^24,etc. +*/ + +/* +See fe_mul.c for discussion of implementation strategy. +*/ + +void fe_sq(fe h,const fe f) +{ + int32_t f0 = f[0]; + int32_t f1 = f[1]; + int32_t f2 = f[2]; + int32_t f3 = f[3]; + int32_t f4 = f[4]; + int32_t f5 = f[5]; + int32_t f6 = f[6]; + int32_t f7 = f[7]; + int32_t f8 = f[8]; + int32_t f9 = f[9]; + int32_t f0_2 = 2 * f0; + int32_t f1_2 = 2 * f1; + int32_t f2_2 = 2 * f2; + int32_t f3_2 = 2 * f3; + int32_t f4_2 = 2 * f4; + int32_t f5_2 = 2 * f5; + int32_t f6_2 = 2 * f6; + int32_t f7_2 = 2 * f7; + int32_t f5_38 = 38 * f5; /* 1.959375*2^30 */ + int32_t f6_19 = 19 * f6; /* 1.959375*2^30 */ + int32_t f7_38 = 38 * f7; /* 1.959375*2^30 */ + int32_t f8_19 = 19 * f8; /* 1.959375*2^30 */ + int32_t f9_38 = 38 * f9; /* 1.959375*2^30 */ + int64_t f0f0 = f0 * (int64_t) f0; + int64_t f0f1_2 = f0_2 * (int64_t) f1; + int64_t f0f2_2 = f0_2 * (int64_t) f2; + int64_t f0f3_2 = f0_2 * (int64_t) f3; + int64_t f0f4_2 = f0_2 * (int64_t) f4; + int64_t f0f5_2 = f0_2 * (int64_t) f5; + int64_t f0f6_2 = f0_2 * (int64_t) f6; + int64_t f0f7_2 = f0_2 * (int64_t) f7; + int64_t f0f8_2 = f0_2 * (int64_t) f8; + int64_t f0f9_2 = f0_2 * (int64_t) f9; + int64_t f1f1_2 = f1_2 * (int64_t) f1; + int64_t f1f2_2 = f1_2 * (int64_t) f2; + int64_t f1f3_4 = f1_2 * (int64_t) f3_2; + int64_t f1f4_2 = f1_2 * (int64_t) f4; + int64_t f1f5_4 = f1_2 * (int64_t) f5_2; + int64_t f1f6_2 = f1_2 * (int64_t) f6; + int64_t f1f7_4 = f1_2 * (int64_t) f7_2; + int64_t f1f8_2 = f1_2 * (int64_t) f8; + int64_t f1f9_76 = f1_2 * (int64_t) f9_38; + int64_t f2f2 = f2 * (int64_t) f2; + int64_t f2f3_2 = f2_2 * (int64_t) f3; + int64_t f2f4_2 = f2_2 * (int64_t) f4; + int64_t f2f5_2 = f2_2 * (int64_t) f5; + int64_t f2f6_2 = f2_2 * (int64_t) f6; + int64_t f2f7_2 = f2_2 * (int64_t) f7; + int64_t f2f8_38 = f2_2 * (int64_t) f8_19; + int64_t f2f9_38 = f2 * (int64_t) f9_38; + int64_t f3f3_2 = f3_2 * (int64_t) f3; + int64_t f3f4_2 = f3_2 * (int64_t) f4; + int64_t f3f5_4 = f3_2 * (int64_t) f5_2; + int64_t f3f6_2 = f3_2 * (int64_t) f6; + int64_t f3f7_76 = f3_2 * (int64_t) f7_38; + int64_t f3f8_38 = f3_2 * (int64_t) f8_19; + int64_t f3f9_76 = f3_2 * (int64_t) f9_38; + int64_t f4f4 = f4 * (int64_t) f4; + int64_t f4f5_2 = f4_2 * (int64_t) f5; + int64_t f4f6_38 = f4_2 * (int64_t) f6_19; + int64_t f4f7_38 = f4 * (int64_t) f7_38; + int64_t f4f8_38 = f4_2 * (int64_t) f8_19; + int64_t f4f9_38 = f4 * (int64_t) f9_38; + int64_t f5f5_38 = f5 * (int64_t) f5_38; + int64_t f5f6_38 = f5_2 * (int64_t) f6_19; + int64_t f5f7_76 = f5_2 * (int64_t) f7_38; + int64_t f5f8_38 = f5_2 * (int64_t) f8_19; + int64_t f5f9_76 = f5_2 * (int64_t) f9_38; + int64_t f6f6_19 = f6 * (int64_t) f6_19; + int64_t f6f7_38 = f6 * (int64_t) f7_38; + int64_t f6f8_38 = f6_2 * (int64_t) f8_19; + int64_t f6f9_38 = f6 * (int64_t) f9_38; + int64_t f7f7_38 = f7 * (int64_t) f7_38; + int64_t f7f8_38 = f7_2 * (int64_t) f8_19; + int64_t f7f9_76 = f7_2 * (int64_t) f9_38; + int64_t f8f8_19 = f8 * (int64_t) f8_19; + int64_t f8f9_38 = f8 * (int64_t) f9_38; + int64_t f9f9_38 = f9 * (int64_t) f9_38; + int64_t h0 = f0f0 +f1f9_76+f2f8_38+f3f7_76+f4f6_38+f5f5_38; + int64_t h1 = f0f1_2+f2f9_38+f3f8_38+f4f7_38+f5f6_38; + int64_t h2 = f0f2_2+f1f1_2 +f3f9_76+f4f8_38+f5f7_76+f6f6_19; + int64_t h3 = f0f3_2+f1f2_2 +f4f9_38+f5f8_38+f6f7_38; + int64_t h4 = f0f4_2+f1f3_4 +f2f2 +f5f9_76+f6f8_38+f7f7_38; + int64_t h5 = f0f5_2+f1f4_2 +f2f3_2 +f6f9_38+f7f8_38; + int64_t h6 = f0f6_2+f1f5_4 +f2f4_2 +f3f3_2 +f7f9_76+f8f8_19; + int64_t h7 = f0f7_2+f1f6_2 +f2f5_2 +f3f4_2 +f8f9_38; + int64_t h8 = f0f8_2+f1f7_4 +f2f6_2 +f3f5_4 +f4f4 +f9f9_38; + int64_t h9 = f0f9_2+f1f8_2 +f2f7_2 +f3f6_2 +f4f5_2; + int64_t carry0; + int64_t carry1; + int64_t carry2; + int64_t carry3; + int64_t carry4; + int64_t carry5; + int64_t carry6; + int64_t carry7; + int64_t carry8; + int64_t carry9; + + carry0 = (h0 + (int64_t) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26; + carry4 = (h4 + (int64_t) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26; + + carry1 = (h1 + (int64_t) (1<<24)) >> 25; h2 += carry1; h1 -= carry1 << 25; + carry5 = (h5 + (int64_t) (1<<24)) >> 25; h6 += carry5; h5 -= carry5 << 25; + + carry2 = (h2 + (int64_t) (1<<25)) >> 26; h3 += carry2; h2 -= carry2 << 26; + carry6 = (h6 + (int64_t) (1<<25)) >> 26; h7 += carry6; h6 -= carry6 << 26; + + carry3 = (h3 + (int64_t) (1<<24)) >> 25; h4 += carry3; h3 -= carry3 << 25; + carry7 = (h7 + (int64_t) (1<<24)) >> 25; h8 += carry7; h7 -= carry7 << 25; + + carry4 = (h4 + (int64_t) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26; + carry8 = (h8 + (int64_t) (1<<25)) >> 26; h9 += carry8; h8 -= carry8 << 26; + + carry9 = (h9 + (int64_t) (1<<24)) >> 25; h0 += carry9 * 19; h9 -= carry9 << 25; + + carry0 = (h0 + (int64_t) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26; + + h[0] = (int32_t)h0; + h[1] = (int32_t)h1; + h[2] = (int32_t)h2; + h[3] = (int32_t)h3; + h[4] = (int32_t)h4; + h[5] = (int32_t)h5; + h[6] = (int32_t)h6; + h[7] = (int32_t)h7; + h[8] = (int32_t)h8; + h[9] = (int32_t)h9; +} + + /* h = f + g Can overlap h with f or g. @@ -84,7 +265,7 @@ Can overlap h with f or g. |h| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc. */ -void fe_add(fe h,fe f,fe g) +void fe_add(fe h,const fe f,const fe g) { int32_t f0 = f[0]; int32_t f1 = f[1]; @@ -129,44 +310,138 @@ void fe_add(fe h,fe f,fe g) } - /* -h = f +Preconditions: + |h| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc. + +Write p=2^255-19; q=floor(h/p). +Basic claim: q = floor(2^(-255)(h + 19 2^(-25)h9 + 2^(-1))). + +Proof: + Have |h|<=p so |q|<=1 so |19^2 2^(-255) q|<1/4. + Also have |h-2^230 h9|<2^231 so |19 2^(-255)(h-2^230 h9)|<1/4. + + Write y=2^(-1)-19^2 2^(-255)q-19 2^(-255)(h-2^230 h9). + Then 0> 25; + q = (h0 + q) >> 26; + q = (h1 + q) >> 25; + q = (h2 + q) >> 26; + q = (h3 + q) >> 25; + q = (h4 + q) >> 26; + q = (h5 + q) >> 25; + q = (h6 + q) >> 26; + q = (h7 + q) >> 25; + q = (h8 + q) >> 26; + q = (h9 + q) >> 25; + + /* Goal: Output h-(2^255-19)q, which is between 0 and 2^255-20. */ + h0 += 19 * q; + /* Goal: Output h-2^255 q, which is between 0 and 2^255-20. */ + + carry0 = h0 >> 26; h1 += carry0; h0 -= carry0 << 26; + carry1 = h1 >> 25; h2 += carry1; h1 -= carry1 << 25; + carry2 = h2 >> 26; h3 += carry2; h2 -= carry2 << 26; + carry3 = h3 >> 25; h4 += carry3; h3 -= carry3 << 25; + carry4 = h4 >> 26; h5 += carry4; h4 -= carry4 << 26; + carry5 = h5 >> 25; h6 += carry5; h5 -= carry5 << 25; + carry6 = h6 >> 26; h7 += carry6; h6 -= carry6 << 26; + carry7 = h7 >> 25; h8 += carry7; h7 -= carry7 << 25; + carry8 = h8 >> 26; h9 += carry8; h8 -= carry8 << 26; + carry9 = h9 >> 25; h9 -= carry9 << 25; + /* h10 = carry9 */ + + /* + Goal: Output h0+...+2^255 h10-2^255 q, which is between 0 and 2^255-20. + Have h0+...+2^230 h9 between 0 and 2^255-1; + evidently 2^255 h10-2^255 q = 0. + Goal: Output h0+...+2^230 h9. + */ + + s[0] = h0 >> 0; + s[1] = h0 >> 8; + s[2] = h0 >> 16; + s[3] = (h0 >> 24) | (h1 << 2); + s[4] = h1 >> 6; + s[5] = h1 >> 14; + s[6] = (h1 >> 22) | (h2 << 3); + s[7] = h2 >> 5; + s[8] = h2 >> 13; + s[9] = (h2 >> 21) | (h3 << 5); + s[10] = h3 >> 3; + s[11] = h3 >> 11; + s[12] = (h3 >> 19) | (h4 << 6); + s[13] = h4 >> 2; + s[14] = h4 >> 10; + s[15] = h4 >> 18; + s[16] = h5 >> 0; + s[17] = h5 >> 8; + s[18] = h5 >> 16; + s[19] = (h5 >> 24) | (h6 << 1); + s[20] = h6 >> 7; + s[21] = h6 >> 15; + s[22] = (h6 >> 23) | (h7 << 3); + s[23] = h7 >> 5; + s[24] = h7 >> 13; + s[25] = (h7 >> 21) | (h8 << 4); + s[26] = h8 >> 4; + s[27] = h8 >> 12; + s[28] = (h8 >> 20) | (h9 << 6); + s[29] = h9 >> 2; + s[30] = h9 >> 10; + s[31] = h9 >> 18; } /* -Replace (f,g) with (g,f) if b == 1; -replace (f,g) with (f,g) if b == 0. +h = f - g +Can overlap h with f or g. -Preconditions: b in {0,1}. +Preconditions: + |f| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. + |g| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. + +Postconditions: + |h| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc. */ -void fe_cswap(fe f,fe g,unsigned int b) +void fe_sub(fe h,const fe f,const fe g) { int32_t f0 = f[0]; int32_t f1 = f[1]; @@ -188,69 +463,32 @@ void fe_cswap(fe f,fe g,unsigned int b) int32_t g7 = g[7]; int32_t g8 = g[8]; int32_t g9 = g[9]; - int32_t x0 = f0 ^ g0; - int32_t x1 = f1 ^ g1; - int32_t x2 = f2 ^ g2; - int32_t x3 = f3 ^ g3; - int32_t x4 = f4 ^ g4; - int32_t x5 = f5 ^ g5; - int32_t x6 = f6 ^ g6; - int32_t x7 = f7 ^ g7; - int32_t x8 = f8 ^ g8; - int32_t x9 = f9 ^ g9; - b = -b; - x0 &= b; - x1 &= b; - x2 &= b; - x3 &= b; - x4 &= b; - x5 &= b; - x6 &= b; - x7 &= b; - x8 &= b; - x9 &= b; - f[0] = f0 ^ x0; - f[1] = f1 ^ x1; - f[2] = f2 ^ x2; - f[3] = f3 ^ x3; - f[4] = f4 ^ x4; - f[5] = f5 ^ x5; - f[6] = f6 ^ x6; - f[7] = f7 ^ x7; - f[8] = f8 ^ x8; - f[9] = f9 ^ x9; - g[0] = g0 ^ x0; - g[1] = g1 ^ x1; - g[2] = g2 ^ x2; - g[3] = g3 ^ x3; - g[4] = g4 ^ x4; - g[5] = g5 ^ x5; - g[6] = g6 ^ x6; - g[7] = g7 ^ x7; - g[8] = g8 ^ x8; - g[9] = g9 ^ x9; + int32_t h0 = f0 - g0; + int32_t h1 = f1 - g1; + int32_t h2 = f2 - g2; + int32_t h3 = f3 - g3; + int32_t h4 = f4 - g4; + int32_t h5 = f5 - g5; + int32_t h6 = f6 - g6; + int32_t h7 = f7 - g7; + int32_t h8 = f8 - g8; + int32_t h9 = f9 - g9; + h[0] = h0; + h[1] = h1; + h[2] = h2; + h[3] = h3; + h[4] = h4; + h[5] = h5; + h[6] = h6; + h[7] = h7; + h[8] = h8; + h[9] = h9; } - -static uint64_t load_3(const unsigned char *in) -{ - uint64_t result; - result = (uint64_t) in[0]; - result |= ((uint64_t) in[1]) << 8; - result |= ((uint64_t) in[2]) << 16; - return result; -} - -static uint64_t load_4(const unsigned char *in) -{ - uint64_t result; - result = (uint64_t) in[0]; - result |= ((uint64_t) in[1]) << 8; - result |= ((uint64_t) in[2]) << 16; - result |= ((uint64_t) in[3]) << 24; - return result; -} +/* +Ignores top bit of h. +*/ void fe_frombytes(fe h,const unsigned char *s) { @@ -300,8 +538,7 @@ void fe_frombytes(fe h,const unsigned char *s) } - -void fe_invert(fe out,fe z) +void fe_invert(fe out,const fe z) { fe t0; fe t1; @@ -309,24 +546,39 @@ void fe_invert(fe out,fe z) fe t3; int i; -#include + /* pow225521 */ + fe_sq(t0,z); for (i = 1;i < 1;++i) fe_sq(t0,t0); + fe_sq(t1,t0); for (i = 1;i < 2;++i) fe_sq(t1,t1); + fe_mul(t1,z,t1); + fe_mul(t0,t0,t1); + fe_sq(t2,t0); for (i = 1;i < 1;++i) fe_sq(t2,t2); + fe_mul(t1,t1,t2); + fe_sq(t2,t1); for (i = 1;i < 5;++i) fe_sq(t2,t2); + fe_mul(t1,t2,t1); + fe_sq(t2,t1); for (i = 1;i < 10;++i) fe_sq(t2,t2); + fe_mul(t2,t2,t1); + fe_sq(t3,t2); for (i = 1;i < 20;++i) fe_sq(t3,t3); + fe_mul(t2,t3,t2); + fe_sq(t2,t2); for (i = 1;i < 10;++i) fe_sq(t2,t2); + fe_mul(t1,t2,t1); + fe_sq(t2,t1); for (i = 1;i < 50;++i) fe_sq(t2,t2); + fe_mul(t2,t2,t1); + fe_sq(t3,t2); for (i = 1;i < 100;++i) fe_sq(t3,t3); + fe_mul(t2,t3,t2); + fe_sq(t2,t2); for (i = 1;i < 50;++i) fe_sq(t2,t2); + fe_mul(t1,t2,t1); + fe_sq(t1,t1); for (i = 1;i < 5;++i) fe_sq(t1,t1); + fe_mul(out,t1,t0); return; } /* -h = f * 121666 -Can overlap h with f. - -Preconditions: - |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc. - -Postconditions: - |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. +h = f */ -void fe_mul121666(fe h,fe f) +void fe_copy(fe h,const fe f) { int32_t f0 = f[0]; int32_t f1 = f[1]; @@ -338,63 +590,29 @@ void fe_mul121666(fe h,fe f) int32_t f7 = f[7]; int32_t f8 = f[8]; int32_t f9 = f[9]; - int64_t h0 = f0 * (int64_t) 121666; - int64_t h1 = f1 * (int64_t) 121666; - int64_t h2 = f2 * (int64_t) 121666; - int64_t h3 = f3 * (int64_t) 121666; - int64_t h4 = f4 * (int64_t) 121666; - int64_t h5 = f5 * (int64_t) 121666; - int64_t h6 = f6 * (int64_t) 121666; - int64_t h7 = f7 * (int64_t) 121666; - int64_t h8 = f8 * (int64_t) 121666; - int64_t h9 = f9 * (int64_t) 121666; - int64_t carry0; - int64_t carry1; - int64_t carry2; - int64_t carry3; - int64_t carry4; - int64_t carry5; - int64_t carry6; - int64_t carry7; - int64_t carry8; - int64_t carry9; - - carry9 = (h9 + (int64_t) (1<<24)) >> 25; h0 += carry9 * 19; h9 -= carry9 << 25; - carry1 = (h1 + (int64_t) (1<<24)) >> 25; h2 += carry1; h1 -= carry1 << 25; - carry3 = (h3 + (int64_t) (1<<24)) >> 25; h4 += carry3; h3 -= carry3 << 25; - carry5 = (h5 + (int64_t) (1<<24)) >> 25; h6 += carry5; h5 -= carry5 << 25; - carry7 = (h7 + (int64_t) (1<<24)) >> 25; h8 += carry7; h7 -= carry7 << 25; - - carry0 = (h0 + (int64_t) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26; - carry2 = (h2 + (int64_t) (1<<25)) >> 26; h3 += carry2; h2 -= carry2 << 26; - carry4 = (h4 + (int64_t) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26; - carry6 = (h6 + (int64_t) (1<<25)) >> 26; h7 += carry6; h6 -= carry6 << 26; - carry8 = (h8 + (int64_t) (1<<25)) >> 26; h9 += carry8; h8 -= carry8 << 26; - - h[0] = (int32_t)h0; - h[1] = (int32_t)h1; - h[2] = (int32_t)h2; - h[3] = (int32_t)h3; - h[4] = (int32_t)h4; - h[5] = (int32_t)h5; - h[6] = (int32_t)h6; - h[7] = (int32_t)h7; - h[8] = (int32_t)h8; - h[9] = (int32_t)h9; + h[0] = f0; + h[1] = f1; + h[2] = f2; + h[3] = f3; + h[4] = f4; + h[5] = f5; + h[6] = f6; + h[7] = f7; + h[8] = f8; + h[9] = f9; } - /* h = f * g Can overlap h with f or g. Preconditions: - |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc. - |g| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc. + |f| bounded by 1.65*2^26,1.65*2^25,1.65*2^26,1.65*2^25,etc. + |g| bounded by 1.65*2^26,1.65*2^25,1.65*2^26,1.65*2^25,etc. Postconditions: - |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. + |h| bounded by 1.01*2^25,1.01*2^24,1.01*2^25,1.01*2^24,etc. */ /* @@ -417,7 +635,7 @@ Can get away with 11 carries, but then data flow is much deeper. With tighter constraints on inputs can squeeze carries into int32. */ -void fe_mul(fe h,fe f,fe g) +void fe_mul(fe h,const fe f,const fe g) { int32_t f0 = f[0]; int32_t f1 = f[1]; @@ -439,8 +657,8 @@ void fe_mul(fe h,fe f,fe g) int32_t g7 = g[7]; int32_t g8 = g[8]; int32_t g9 = g[9]; - int32_t g1_19 = 19 * g1; /* 1.4*2^29 */ - int32_t g2_19 = 19 * g2; /* 1.4*2^30; still ok */ + int32_t g1_19 = 19 * g1; /* 1.959375*2^29 */ + int32_t g2_19 = 19 * g2; /* 1.959375*2^30; still ok */ int32_t g3_19 = 19 * g3; int32_t g4_19 = 19 * g4; int32_t g5_19 = 19 * g5; @@ -574,55 +792,197 @@ void fe_mul(fe h,fe f,fe g) int64_t carry8; int64_t carry9; - /* - |h0| <= (1.1*1.1*2^52*(1+19+19+19+19)+1.1*1.1*2^50*(38+38+38+38+38)) - i.e. |h0| <= 1.2*2^59; narrower ranges for h2, h4, h6, h8 - |h1| <= (1.1*1.1*2^51*(1+1+19+19+19+19+19+19+19+19)) - i.e. |h1| <= 1.5*2^58; narrower ranges for h3, h5, h7, h9 - */ - - carry0 = (h0 + (int64_t) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26; - carry4 = (h4 + (int64_t) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26; - /* |h0| <= 2^25 */ - /* |h4| <= 2^25 */ - /* |h1| <= 1.51*2^58 */ - /* |h5| <= 1.51*2^58 */ - + /* + |h0| <= (1.65*1.65*2^52*(1+19+19+19+19)+1.65*1.65*2^50*(38+38+38+38+38)) + i.e. |h0| <= 1.4*2^60; narrower ranges for h2, h4, h6, h8 + |h1| <= (1.65*1.65*2^51*(1+1+19+19+19+19+19+19+19+19)) + i.e. |h1| <= 1.7*2^59; narrower ranges for h3, h5, h7, h9 + */ + + carry0 = (h0 + (int64_t) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26; + carry4 = (h4 + (int64_t) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26; + /* |h0| <= 2^25 */ + /* |h4| <= 2^25 */ + /* |h1| <= 1.71*2^59 */ + /* |h5| <= 1.71*2^59 */ + + carry1 = (h1 + (int64_t) (1<<24)) >> 25; h2 += carry1; h1 -= carry1 << 25; + carry5 = (h5 + (int64_t) (1<<24)) >> 25; h6 += carry5; h5 -= carry5 << 25; + /* |h1| <= 2^24; from now on fits into int32 */ + /* |h5| <= 2^24; from now on fits into int32 */ + /* |h2| <= 1.41*2^60 */ + /* |h6| <= 1.41*2^60 */ + + carry2 = (h2 + (int64_t) (1<<25)) >> 26; h3 += carry2; h2 -= carry2 << 26; + carry6 = (h6 + (int64_t) (1<<25)) >> 26; h7 += carry6; h6 -= carry6 << 26; + /* |h2| <= 2^25; from now on fits into int32 unchanged */ + /* |h6| <= 2^25; from now on fits into int32 unchanged */ + /* |h3| <= 1.71*2^59 */ + /* |h7| <= 1.71*2^59 */ + + carry3 = (h3 + (int64_t) (1<<24)) >> 25; h4 += carry3; h3 -= carry3 << 25; + carry7 = (h7 + (int64_t) (1<<24)) >> 25; h8 += carry7; h7 -= carry7 << 25; + /* |h3| <= 2^24; from now on fits into int32 unchanged */ + /* |h7| <= 2^24; from now on fits into int32 unchanged */ + /* |h4| <= 1.72*2^34 */ + /* |h8| <= 1.41*2^60 */ + + carry4 = (h4 + (int64_t) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26; + carry8 = (h8 + (int64_t) (1<<25)) >> 26; h9 += carry8; h8 -= carry8 << 26; + /* |h4| <= 2^25; from now on fits into int32 unchanged */ + /* |h8| <= 2^25; from now on fits into int32 unchanged */ + /* |h5| <= 1.01*2^24 */ + /* |h9| <= 1.71*2^59 */ + + carry9 = (h9 + (int64_t) (1<<24)) >> 25; h0 += carry9 * 19; h9 -= carry9 << 25; + /* |h9| <= 2^24; from now on fits into int32 unchanged */ + /* |h0| <= 1.1*2^39 */ + + carry0 = (h0 + (int64_t) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26; + /* |h0| <= 2^25; from now on fits into int32 unchanged */ + /* |h1| <= 1.01*2^24 */ + + h[0] = (int32_t)h0; + h[1] = (int32_t)h1; + h[2] = (int32_t)h2; + h[3] = (int32_t)h3; + h[4] = (int32_t)h4; + h[5] = (int32_t)h5; + h[6] = (int32_t)h6; + h[7] = (int32_t)h7; + h[8] = (int32_t)h8; + h[9] = (int32_t)h9; +} + + +/* +Replace (f,g) with (g,f) if b == 1; +replace (f,g) with (f,g) if b == 0. + +Preconditions: b in {0,1}. +*/ + +void fe_cswap(fe f,fe g,unsigned int b) +{ + int32_t f0 = f[0]; + int32_t f1 = f[1]; + int32_t f2 = f[2]; + int32_t f3 = f[3]; + int32_t f4 = f[4]; + int32_t f5 = f[5]; + int32_t f6 = f[6]; + int32_t f7 = f[7]; + int32_t f8 = f[8]; + int32_t f9 = f[9]; + int32_t g0 = g[0]; + int32_t g1 = g[1]; + int32_t g2 = g[2]; + int32_t g3 = g[3]; + int32_t g4 = g[4]; + int32_t g5 = g[5]; + int32_t g6 = g[6]; + int32_t g7 = g[7]; + int32_t g8 = g[8]; + int32_t g9 = g[9]; + int32_t x0 = f0 ^ g0; + int32_t x1 = f1 ^ g1; + int32_t x2 = f2 ^ g2; + int32_t x3 = f3 ^ g3; + int32_t x4 = f4 ^ g4; + int32_t x5 = f5 ^ g5; + int32_t x6 = f6 ^ g6; + int32_t x7 = f7 ^ g7; + int32_t x8 = f8 ^ g8; + int32_t x9 = f9 ^ g9; + b = -b; + x0 &= b; + x1 &= b; + x2 &= b; + x3 &= b; + x4 &= b; + x5 &= b; + x6 &= b; + x7 &= b; + x8 &= b; + x9 &= b; + f[0] = f0 ^ x0; + f[1] = f1 ^ x1; + f[2] = f2 ^ x2; + f[3] = f3 ^ x3; + f[4] = f4 ^ x4; + f[5] = f5 ^ x5; + f[6] = f6 ^ x6; + f[7] = f7 ^ x7; + f[8] = f8 ^ x8; + f[9] = f9 ^ x9; + g[0] = g0 ^ x0; + g[1] = g1 ^ x1; + g[2] = g2 ^ x2; + g[3] = g3 ^ x3; + g[4] = g4 ^ x4; + g[5] = g5 ^ x5; + g[6] = g6 ^ x6; + g[7] = g7 ^ x7; + g[8] = g8 ^ x8; + g[9] = g9 ^ x9; +} + + +/* +h = f * 121666 +Can overlap h with f. + +Preconditions: + |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc. + +Postconditions: + |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. +*/ + +void fe_mul121666(fe h,fe f) +{ + int32_t f0 = f[0]; + int32_t f1 = f[1]; + int32_t f2 = f[2]; + int32_t f3 = f[3]; + int32_t f4 = f[4]; + int32_t f5 = f[5]; + int32_t f6 = f[6]; + int32_t f7 = f[7]; + int32_t f8 = f[8]; + int32_t f9 = f[9]; + int64_t h0 = f0 * (int64_t) 121666; + int64_t h1 = f1 * (int64_t) 121666; + int64_t h2 = f2 * (int64_t) 121666; + int64_t h3 = f3 * (int64_t) 121666; + int64_t h4 = f4 * (int64_t) 121666; + int64_t h5 = f5 * (int64_t) 121666; + int64_t h6 = f6 * (int64_t) 121666; + int64_t h7 = f7 * (int64_t) 121666; + int64_t h8 = f8 * (int64_t) 121666; + int64_t h9 = f9 * (int64_t) 121666; + int64_t carry0; + int64_t carry1; + int64_t carry2; + int64_t carry3; + int64_t carry4; + int64_t carry5; + int64_t carry6; + int64_t carry7; + int64_t carry8; + int64_t carry9; + + carry9 = (h9 + (int64_t) (1<<24)) >> 25; h0 += carry9 * 19; h9 -= carry9 << 25; carry1 = (h1 + (int64_t) (1<<24)) >> 25; h2 += carry1; h1 -= carry1 << 25; - carry5 = (h5 + (int64_t) (1<<24)) >> 25; h6 += carry5; h5 -= carry5 << 25; - /* |h1| <= 2^24; from now on fits into int32 */ - /* |h5| <= 2^24; from now on fits into int32 */ - /* |h2| <= 1.21*2^59 */ - /* |h6| <= 1.21*2^59 */ - - carry2 = (h2 + (int64_t) (1<<25)) >> 26; h3 += carry2; h2 -= carry2 << 26; - carry6 = (h6 + (int64_t) (1<<25)) >> 26; h7 += carry6; h6 -= carry6 << 26; - /* |h2| <= 2^25; from now on fits into int32 unchanged */ - /* |h6| <= 2^25; from now on fits into int32 unchanged */ - /* |h3| <= 1.51*2^58 */ - /* |h7| <= 1.51*2^58 */ - carry3 = (h3 + (int64_t) (1<<24)) >> 25; h4 += carry3; h3 -= carry3 << 25; + carry5 = (h5 + (int64_t) (1<<24)) >> 25; h6 += carry5; h5 -= carry5 << 25; carry7 = (h7 + (int64_t) (1<<24)) >> 25; h8 += carry7; h7 -= carry7 << 25; - /* |h3| <= 2^24; from now on fits into int32 unchanged */ - /* |h7| <= 2^24; from now on fits into int32 unchanged */ - /* |h4| <= 1.52*2^33 */ - /* |h8| <= 1.52*2^33 */ + carry0 = (h0 + (int64_t) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26; + carry2 = (h2 + (int64_t) (1<<25)) >> 26; h3 += carry2; h2 -= carry2 << 26; carry4 = (h4 + (int64_t) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26; + carry6 = (h6 + (int64_t) (1<<25)) >> 26; h7 += carry6; h6 -= carry6 << 26; carry8 = (h8 + (int64_t) (1<<25)) >> 26; h9 += carry8; h8 -= carry8 << 26; - /* |h4| <= 2^25; from now on fits into int32 unchanged */ - /* |h8| <= 2^25; from now on fits into int32 unchanged */ - /* |h5| <= 1.01*2^24 */ - /* |h9| <= 1.51*2^58 */ - - carry9 = (h9 + (int64_t) (1<<24)) >> 25; h0 += carry9 * 19; h9 -= carry9 << 25; - /* |h9| <= 2^24; from now on fits into int32 unchanged */ - /* |h0| <= 1.8*2^37 */ - - carry0 = (h0 + (int64_t) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26; - /* |h0| <= 2^25; from now on fits into int32 unchanged */ - /* |h1| <= 1.01*2^24 */ h[0] = (int32_t)h0; h[1] = (int32_t)h1; @@ -637,23 +997,22 @@ void fe_mul(fe h,fe f,fe g) } - /* -h = f * f +h = 2 * f * f Can overlap h with f. Preconditions: - |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc. + |f| bounded by 1.65*2^26,1.65*2^25,1.65*2^26,1.65*2^25,etc. Postconditions: - |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. + |h| bounded by 1.01*2^25,1.01*2^24,1.01*2^25,1.01*2^24,etc. */ /* See fe_mul.c for discussion of implementation strategy. */ -void fe_sq(fe h,fe f) +void fe_sq2(fe h,const fe f) { int32_t f0 = f[0]; int32_t f1 = f[1]; @@ -673,11 +1032,11 @@ void fe_sq(fe h,fe f) int32_t f5_2 = 2 * f5; int32_t f6_2 = 2 * f6; int32_t f7_2 = 2 * f7; - int32_t f5_38 = 38 * f5; /* 1.31*2^30 */ - int32_t f6_19 = 19 * f6; /* 1.31*2^30 */ - int32_t f7_38 = 38 * f7; /* 1.31*2^30 */ - int32_t f8_19 = 19 * f8; /* 1.31*2^30 */ - int32_t f9_38 = 38 * f9; /* 1.31*2^30 */ + int32_t f5_38 = 38 * f5; /* 1.959375*2^30 */ + int32_t f6_19 = 19 * f6; /* 1.959375*2^30 */ + int32_t f7_38 = 38 * f7; /* 1.959375*2^30 */ + int32_t f8_19 = 19 * f8; /* 1.959375*2^30 */ + int32_t f9_38 = 38 * f9; /* 1.959375*2^30 */ int64_t f0f0 = f0 * (int64_t) f0; int64_t f0f1_2 = f0_2 * (int64_t) f1; int64_t f0f2_2 = f0_2 * (int64_t) f2; @@ -754,6 +1113,17 @@ void fe_sq(fe h,fe f) int64_t carry8; int64_t carry9; + h0 += h0; + h1 += h1; + h2 += h2; + h3 += h3; + h4 += h4; + h5 += h5; + h6 += h6; + h7 += h7; + h8 += h8; + h9 += h9; + carry0 = (h0 + (int64_t) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26; carry4 = (h4 + (int64_t) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26; @@ -786,20 +1156,51 @@ void fe_sq(fe h,fe f) } +void fe_pow22523(fe out,const fe z) +{ + fe t0; + fe t1; + fe t2; + int i; + + fe_sq(t0,z); for (i = 1;i < 1;++i) fe_sq(t0,t0); + fe_sq(t1,t0); for (i = 1;i < 2;++i) fe_sq(t1,t1); + fe_mul(t1,z,t1); + fe_mul(t0,t0,t1); + fe_sq(t0,t0); for (i = 1;i < 1;++i) fe_sq(t0,t0); + fe_mul(t0,t1,t0); + fe_sq(t1,t0); for (i = 1;i < 5;++i) fe_sq(t1,t1); + fe_mul(t0,t1,t0); + fe_sq(t1,t0); for (i = 1;i < 10;++i) fe_sq(t1,t1); + fe_mul(t1,t1,t0); + fe_sq(t2,t1); for (i = 1;i < 20;++i) fe_sq(t2,t2); + fe_mul(t1,t2,t1); + fe_sq(t1,t1); for (i = 1;i < 10;++i) fe_sq(t1,t1); + fe_mul(t0,t1,t0); + fe_sq(t1,t0); for (i = 1;i < 50;++i) fe_sq(t1,t1); + fe_mul(t1,t1,t0); + fe_sq(t2,t1); for (i = 1;i < 100;++i) fe_sq(t2,t2); + fe_mul(t1,t2,t1); + fe_sq(t1,t1); for (i = 1;i < 50;++i) fe_sq(t1,t1); + fe_mul(t0,t1,t0); + fe_sq(t0,t0); for (i = 1;i < 2;++i) fe_sq(t0,t0); + fe_mul(out,t0,z); + + return; +} + /* -h = f - g -Can overlap h with f or g. +h = -f Preconditions: |f| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. - |g| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. Postconditions: - |h| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc. + |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. */ -void fe_sub(fe h,fe f,fe g) +void fe_neg(fe h,const fe f) { int32_t f0 = f[0]; int32_t f1 = f[1]; @@ -811,26 +1212,16 @@ void fe_sub(fe h,fe f,fe g) int32_t f7 = f[7]; int32_t f8 = f[8]; int32_t f9 = f[9]; - int32_t g0 = g[0]; - int32_t g1 = g[1]; - int32_t g2 = g[2]; - int32_t g3 = g[3]; - int32_t g4 = g[4]; - int32_t g5 = g[5]; - int32_t g6 = g[6]; - int32_t g7 = g[7]; - int32_t g8 = g[8]; - int32_t g9 = g[9]; - int32_t h0 = f0 - g0; - int32_t h1 = f1 - g1; - int32_t h2 = f2 - g2; - int32_t h3 = f3 - g3; - int32_t h4 = f4 - g4; - int32_t h5 = f5 - g5; - int32_t h6 = f6 - g6; - int32_t h7 = f7 - g7; - int32_t h8 = f8 - g8; - int32_t h9 = f9 - g9; + int32_t h0 = -f0; + int32_t h1 = -f1; + int32_t h2 = -f2; + int32_t h3 = -f3; + int32_t h4 = -f4; + int32_t h5 = -f5; + int32_t h6 = -f6; + int32_t h7 = -f7; + int32_t h8 = -f8; + int32_t h9 = -f9; h[0] = h0; h[1] = h1; h[2] = h2; @@ -844,124 +1235,102 @@ void fe_sub(fe h,fe f,fe g) } - /* -Preconditions: - |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. +return 1 if f == 0 +return 0 if f != 0 -Write p=2^255-19; q=floor(h/p). -Basic claim: q = floor(2^(-255)(h + 19 2^(-25)h9 + 2^(-1))). +Preconditions: + |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc. +*/ -Proof: - Have |h|<=p so |q|<=1 so |19^2 2^(-255) q|<1/4. - Also have |h-2^230 h9|<2^230 so |19 2^(-255)(h-2^230 h9)|<1/4. +static const unsigned char zero[32]; - Write y=2^(-1)-19^2 2^(-255)q-19 2^(-255)(h-2^230 h9). - Then 0> 25; - q = (h0 + q) >> 26; - q = (h1 + q) >> 25; - q = (h2 + q) >> 26; - q = (h3 + q) >> 25; - q = (h4 + q) >> 26; - q = (h5 + q) >> 25; - q = (h6 + q) >> 26; - q = (h7 + q) >> 25; - q = (h8 + q) >> 26; - q = (h9 + q) >> 25; + unsigned char s[32]; + fe_tobytes(s,f); + return s[0] & 1; +} - /* Goal: Output h-(2^255-19)q, which is between 0 and 2^255-20. */ - h0 += 19 * q; - /* Goal: Output h-2^255 q, which is between 0 and 2^255-20. */ - carry0 = h0 >> 26; h1 += carry0; h0 -= carry0 << 26; - carry1 = h1 >> 25; h2 += carry1; h1 -= carry1 << 25; - carry2 = h2 >> 26; h3 += carry2; h2 -= carry2 << 26; - carry3 = h3 >> 25; h4 += carry3; h3 -= carry3 << 25; - carry4 = h4 >> 26; h5 += carry4; h4 -= carry4 << 26; - carry5 = h5 >> 25; h6 += carry5; h5 -= carry5 << 25; - carry6 = h6 >> 26; h7 += carry6; h6 -= carry6 << 26; - carry7 = h7 >> 25; h8 += carry7; h7 -= carry7 << 25; - carry8 = h8 >> 26; h9 += carry8; h8 -= carry8 << 26; - carry9 = h9 >> 25; h9 -= carry9 << 25; - /* h10 = carry9 */ +/* +Replace (f,g) with (g,g) if b == 1; +replace (f,g) with (f,g) if b == 0. - /* - Goal: Output h0+...+2^255 h10-2^255 q, which is between 0 and 2^255-20. - Have h0+...+2^230 h9 between 0 and 2^255-1; - evidently 2^255 h10-2^255 q = 0. - Goal: Output h0+...+2^230 h9. - */ +Preconditions: b in {0,1}. +*/ - s[0] = h0 >> 0; - s[1] = h0 >> 8; - s[2] = h0 >> 16; - s[3] = (h0 >> 24) | (h1 << 2); - s[4] = h1 >> 6; - s[5] = h1 >> 14; - s[6] = (h1 >> 22) | (h2 << 3); - s[7] = h2 >> 5; - s[8] = h2 >> 13; - s[9] = (h2 >> 21) | (h3 << 5); - s[10] = h3 >> 3; - s[11] = h3 >> 11; - s[12] = (h3 >> 19) | (h4 << 6); - s[13] = h4 >> 2; - s[14] = h4 >> 10; - s[15] = h4 >> 18; - s[16] = h5 >> 0; - s[17] = h5 >> 8; - s[18] = h5 >> 16; - s[19] = (h5 >> 24) | (h6 << 1); - s[20] = h6 >> 7; - s[21] = h6 >> 15; - s[22] = (h6 >> 23) | (h7 << 3); - s[23] = h7 >> 5; - s[24] = h7 >> 13; - s[25] = (h7 >> 21) | (h8 << 4); - s[26] = h8 >> 4; - s[27] = h8 >> 12; - s[28] = (h8 >> 20) | (h9 << 6); - s[29] = h9 >> 2; - s[30] = h9 >> 10; - s[31] = h9 >> 18; +void fe_cmov(fe f,const fe g,unsigned int b) +{ + int32_t f0 = f[0]; + int32_t f1 = f[1]; + int32_t f2 = f[2]; + int32_t f3 = f[3]; + int32_t f4 = f[4]; + int32_t f5 = f[5]; + int32_t f6 = f[6]; + int32_t f7 = f[7]; + int32_t f8 = f[8]; + int32_t f9 = f[9]; + int32_t g0 = g[0]; + int32_t g1 = g[1]; + int32_t g2 = g[2]; + int32_t g3 = g[3]; + int32_t g4 = g[4]; + int32_t g5 = g[5]; + int32_t g6 = g[6]; + int32_t g7 = g[7]; + int32_t g8 = g[8]; + int32_t g9 = g[9]; + int32_t x0 = f0 ^ g0; + int32_t x1 = f1 ^ g1; + int32_t x2 = f2 ^ g2; + int32_t x3 = f3 ^ g3; + int32_t x4 = f4 ^ g4; + int32_t x5 = f5 ^ g5; + int32_t x6 = f6 ^ g6; + int32_t x7 = f7 ^ g7; + int32_t x8 = f8 ^ g8; + int32_t x9 = f9 ^ g9; + b = -b; + x0 &= b; + x1 &= b; + x2 &= b; + x3 &= b; + x4 &= b; + x5 &= b; + x6 &= b; + x7 &= b; + x8 &= b; + x9 &= b; + f[0] = f0 ^ x0; + f[1] = f1 ^ x1; + f[2] = f2 ^ x2; + f[3] = f3 ^ x3; + f[4] = f4 ^ x4; + f[5] = f5 ^ x5; + f[6] = f6 ^ x6; + f[7] = f7 ^ x7; + f[8] = f8 ^ x8; + f[9] = f9 ^ x9; } - -#endif /*HAVE_ECC25519*/ +#endif /* HAVE ED25519 or ECC25519 */ diff --git a/wolfcrypt/src/ge_operations.c b/wolfcrypt/src/ge_operations.c new file mode 100644 index 00000000000..2a4885ae894 --- /dev/null +++ b/wolfcrypt/src/ge_operations.c @@ -0,0 +1,1939 @@ +/* ge_operations.c + * + * Copyright (C) 2006-2015 wolfSSL Inc. + * + * This file is part of wolfSSL. (formerly known as CyaSSL) + * + * wolfSSL is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * wolfSSL is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + + /* Based On Daniel J Bernstein's ed25519 Public Domain ref10 work. */ + + +#ifdef HAVE_CONFIG_H + #include +#endif + +#include + +#ifdef HAVE_ED25519 + +#include +#include +#ifdef NO_INLINE + #include +#else + #include +#endif + +/* +ge means group element. + +Here the group is the set of pairs (x,y) of field elements (see fe.h) +satisfying -x^2 + y^2 = 1 + d x^2y^2 +where d = -121665/121666. + +Representations: + ge_p2 (projective): (X:Y:Z) satisfying x=X/Z, y=Y/Z + ge_p3 (extended): (X:Y:Z:T) satisfying x=X/Z, y=Y/Z, XY=ZT + ge_p1p1 (completed): ((X:Z),(Y:T)) satisfying x=X/Z, y=Y/T + ge_precomp (Duif): (y+x,y-x,2dxy) +*/ +/* + + +r = p + q +*/ + +void ge_add(ge_p1p1 *r,const ge_p3 *p,const ge_cached *q) +{ + fe t0; + fe_add(r->X,p->Y,p->X); + fe_sub(r->Y,p->Y,p->X); + fe_mul(r->Z,r->X,q->YplusX); + fe_mul(r->Y,r->Y,q->YminusX); + fe_mul(r->T,q->T2d,p->T); + fe_mul(r->X,p->Z,q->Z); + fe_add(t0,r->X,r->X); + fe_sub(r->X,r->Z,r->Y); + fe_add(r->Y,r->Z,r->Y); + fe_add(r->Z,t0,r->T); + fe_sub(r->T,t0,r->T); +} + + +/* ge_scalar mult base */ +static unsigned char equal(signed char b,signed char c) +{ + unsigned char ub = b; + unsigned char uc = c; + unsigned char x = ub ^ uc; /* 0: yes; 1..255: no */ + uint32_t y = x; /* 0: yes; 1..255: no */ + y -= 1; /* 4294967295: yes; 0..254: no */ + y >>= 31; /* 1: yes; 0: no */ + return y; +} + + +static unsigned char negative(signed char b) +{ + unsigned long long x = b; /* 18446744073709551361..18446744073709551615: yes; 0..255: no */ + x >>= 63; /* 1: yes; 0: no */ + return x; +} + + +static void cmov(ge_precomp *t,ge_precomp *u,unsigned char b) +{ + fe_cmov(t->yplusx,u->yplusx,b); + fe_cmov(t->yminusx,u->yminusx,b); + fe_cmov(t->xy2d,u->xy2d,b); +} + + +/* base[i][j] = (j+1)*256^i*B */ +static ge_precomp base[32][8] = { +{ + { + { 25967493,-14356035,29566456,3660896,-12694345,4014787,27544626,-11754271,-6079156,2047605 }, + { -12545711,934262,-2722910,3049990,-727428,9406986,12720692,5043384,19500929,-15469378 }, + { -8738181,4489570,9688441,-14785194,10184609,-12363380,29287919,11864899,-24514362,-4438546 }, + }, + { + { -12815894,-12976347,-21581243,11784320,-25355658,-2750717,-11717903,-3814571,-358445,-10211303 }, + { -21703237,6903825,27185491,6451973,-29577724,-9554005,-15616551,11189268,-26829678,-5319081 }, + { 26966642,11152617,32442495,15396054,14353839,-12752335,-3128826,-9541118,-15472047,-4166697 }, + }, + { + { 15636291,-9688557,24204773,-7912398,616977,-16685262,27787600,-14772189,28944400,-1550024 }, + { 16568933,4717097,-11556148,-1102322,15682896,-11807043,16354577,-11775962,7689662,11199574 }, + { 30464156,-5976125,-11779434,-15670865,23220365,15915852,7512774,10017326,-17749093,-9920357 }, + }, + { + { -17036878,13921892,10945806,-6033431,27105052,-16084379,-28926210,15006023,3284568,-6276540 }, + { 23599295,-8306047,-11193664,-7687416,13236774,10506355,7464579,9656445,13059162,10374397 }, + { 7798556,16710257,3033922,2874086,28997861,2835604,32406664,-3839045,-641708,-101325 }, + }, + { + { 10861363,11473154,27284546,1981175,-30064349,12577861,32867885,14515107,-15438304,10819380 }, + { 4708026,6336745,20377586,9066809,-11272109,6594696,-25653668,12483688,-12668491,5581306 }, + { 19563160,16186464,-29386857,4097519,10237984,-4348115,28542350,13850243,-23678021,-15815942 }, + }, + { + { -15371964,-12862754,32573250,4720197,-26436522,5875511,-19188627,-15224819,-9818940,-12085777 }, + { -8549212,109983,15149363,2178705,22900618,4543417,3044240,-15689887,1762328,14866737 }, + { -18199695,-15951423,-10473290,1707278,-17185920,3916101,-28236412,3959421,27914454,4383652 }, + }, + { + { 5153746,9909285,1723747,-2777874,30523605,5516873,19480852,5230134,-23952439,-15175766 }, + { -30269007,-3463509,7665486,10083793,28475525,1649722,20654025,16520125,30598449,7715701 }, + { 28881845,14381568,9657904,3680757,-20181635,7843316,-31400660,1370708,29794553,-1409300 }, + }, + { + { 14499471,-2729599,-33191113,-4254652,28494862,14271267,30290735,10876454,-33154098,2381726 }, + { -7195431,-2655363,-14730155,462251,-27724326,3941372,-6236617,3696005,-32300832,15351955 }, + { 27431194,8222322,16448760,-3907995,-18707002,11938355,-32961401,-2970515,29551813,10109425 }, + }, +}, +{ + { + { -13657040,-13155431,-31283750,11777098,21447386,6519384,-2378284,-1627556,10092783,-4764171 }, + { 27939166,14210322,4677035,16277044,-22964462,-12398139,-32508754,12005538,-17810127,12803510 }, + { 17228999,-15661624,-1233527,300140,-1224870,-11714777,30364213,-9038194,18016357,4397660 }, + }, + { + { -10958843,-7690207,4776341,-14954238,27850028,-15602212,-26619106,14544525,-17477504,982639 }, + { 29253598,15796703,-2863982,-9908884,10057023,3163536,7332899,-4120128,-21047696,9934963 }, + { 5793303,16271923,-24131614,-10116404,29188560,1206517,-14747930,4559895,-30123922,-10897950 }, + }, + { + { -27643952,-11493006,16282657,-11036493,28414021,-15012264,24191034,4541697,-13338309,5500568 }, + { 12650548,-1497113,9052871,11355358,-17680037,-8400164,-17430592,12264343,10874051,13524335 }, + { 25556948,-3045990,714651,2510400,23394682,-10415330,33119038,5080568,-22528059,5376628 }, + }, + { + { -26088264,-4011052,-17013699,-3537628,-6726793,1920897,-22321305,-9447443,4535768,1569007 }, + { -2255422,14606630,-21692440,-8039818,28430649,8775819,-30494562,3044290,31848280,12543772 }, + { -22028579,2943893,-31857513,6777306,13784462,-4292203,-27377195,-2062731,7718482,14474653 }, + }, + { + { 2385315,2454213,-22631320,46603,-4437935,-15680415,656965,-7236665,24316168,-5253567 }, + { 13741529,10911568,-33233417,-8603737,-20177830,-1033297,33040651,-13424532,-20729456,8321686 }, + 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-22448644,15655569,7018479,-4410003,-30314266,-1201591,-1853465,1367120,25127874,6671743 }, + { 29701166,-14373934,-10878120,9279288,-17568,13127210,21382910,11042292,25838796,4642684 }, + { -20430234,14955537,-24126347,8124619,-5369288,-5990470,30468147,-13900640,18423289,4177476 }, + }, +}, +} ; + + +static void ge_select(ge_precomp *t,int pos,signed char b) +{ + ge_precomp minust; + unsigned char bnegative = negative(b); + unsigned char babs = b - (((-bnegative) & b) << 1); + + ge_precomp_0(t); + cmov(t,&base[pos][0],equal(babs,1)); + cmov(t,&base[pos][1],equal(babs,2)); + cmov(t,&base[pos][2],equal(babs,3)); + cmov(t,&base[pos][3],equal(babs,4)); + cmov(t,&base[pos][4],equal(babs,5)); + cmov(t,&base[pos][5],equal(babs,6)); + cmov(t,&base[pos][6],equal(babs,7)); + cmov(t,&base[pos][7],equal(babs,8)); + fe_copy(minust.yplusx,t->yminusx); + fe_copy(minust.yminusx,t->yplusx); + fe_neg(minust.xy2d,t->xy2d); + cmov(t,&minust,bnegative); +} + + +/* +h = a * B +where a = a[0]+256*a[1]+...+256^31 a[31] +B is the Ed25519 base point (x,4/5) with x positive. + +Preconditions: + a[31] <= 127 +*/ + +void ge_scalarmult_base(ge_p3 *h,const unsigned char *a) +{ + signed char e[64]; + signed char carry; + ge_p1p1 r; + ge_p2 s; + ge_precomp t; + int i; + + for (i = 0;i < 32;++i) { + e[2 * i + 0] = (a[i] >> 0) & 15; + e[2 * i + 1] = (a[i] >> 4) & 15; + } + /* each e[i] is between 0 and 15 */ + /* e[63] is between 0 and 7 */ + + carry = 0; + for (i = 0;i < 63;++i) { + e[i] += carry; + carry = e[i] + 8; + carry >>= 4; + e[i] -= carry << 4; + } + e[63] += carry; + /* each e[i] is between -8 and 8 */ + + ge_p3_0(h); + for (i = 1;i < 64;i += 2) { + ge_select(&t,i / 2,e[i]); + ge_madd(&r,h,&t); ge_p1p1_to_p3(h,&r); + } + + ge_p3_dbl(&r,h); ge_p1p1_to_p2(&s,&r); + ge_p2_dbl(&r,&s); ge_p1p1_to_p2(&s,&r); + ge_p2_dbl(&r,&s); ge_p1p1_to_p2(&s,&r); + ge_p2_dbl(&r,&s); ge_p1p1_to_p3(h,&r); + + for (i = 0;i < 64;i += 2) { + ge_select(&t,i / 2,e[i]); + ge_madd(&r,h,&t); ge_p1p1_to_p3(h,&r); + } +} + + +/* ge double scalar mult */ +static void slide(signed char *r,const unsigned char *a) +{ + int i; + int b; + int k; + + for (i = 0;i < 256;++i) + r[i] = 1 & (a[i >> 3] >> (i & 7)); + + for (i = 0;i < 256;++i) + if (r[i]) { + for (b = 1;b <= 6 && i + b < 256;++b) { + if (r[i + b]) { + if (r[i] + (r[i + b] << b) <= 15) { + r[i] += r[i + b] << b; r[i + b] = 0; + } else if (r[i] - (r[i + b] << b) >= -15) { + r[i] -= r[i + b] << b; + for (k = i + b;k < 256;++k) { + if (!r[k]) { + r[k] = 1; + break; + } + r[k] = 0; + } + } else + break; + } + } + } +} + + +static ge_precomp Bi[8] = { + { + { 25967493,-14356035,29566456,3660896,-12694345,4014787,27544626,-11754271,-6079156,2047605 }, + { -12545711,934262,-2722910,3049990,-727428,9406986,12720692,5043384,19500929,-15469378 }, + { -8738181,4489570,9688441,-14785194,10184609,-12363380,29287919,11864899,-24514362,-4438546 }, + }, + { + { 15636291,-9688557,24204773,-7912398,616977,-16685262,27787600,-14772189,28944400,-1550024 }, + { 16568933,4717097,-11556148,-1102322,15682896,-11807043,16354577,-11775962,7689662,11199574 }, + { 30464156,-5976125,-11779434,-15670865,23220365,15915852,7512774,10017326,-17749093,-9920357 }, + }, + { + { 10861363,11473154,27284546,1981175,-30064349,12577861,32867885,14515107,-15438304,10819380 }, + { 4708026,6336745,20377586,9066809,-11272109,6594696,-25653668,12483688,-12668491,5581306 }, + { 19563160,16186464,-29386857,4097519,10237984,-4348115,28542350,13850243,-23678021,-15815942 }, + }, + { + { 5153746,9909285,1723747,-2777874,30523605,5516873,19480852,5230134,-23952439,-15175766 }, + { -30269007,-3463509,7665486,10083793,28475525,1649722,20654025,16520125,30598449,7715701 }, + { 28881845,14381568,9657904,3680757,-20181635,7843316,-31400660,1370708,29794553,-1409300 }, + }, + { + { -22518993,-6692182,14201702,-8745502,-23510406,8844726,18474211,-1361450,-13062696,13821877 }, + { -6455177,-7839871,3374702,-4740862,-27098617,-10571707,31655028,-7212327,18853322,-14220951 }, + { 4566830,-12963868,-28974889,-12240689,-7602672,-2830569,-8514358,-10431137,2207753,-3209784 }, + }, + { + { -25154831,-4185821,29681144,7868801,-6854661,-9423865,-12437364,-663000,-31111463,-16132436 }, + { 25576264,-2703214,7349804,-11814844,16472782,9300885,3844789,15725684,171356,6466918 }, + { 23103977,13316479,9739013,-16149481,817875,-15038942,8965339,-14088058,-30714912,16193877 }, + }, + { + { -33521811,3180713,-2394130,14003687,-16903474,-16270840,17238398,4729455,-18074513,9256800 }, + { -25182317,-4174131,32336398,5036987,-21236817,11360617,22616405,9761698,-19827198,630305 }, + { -13720693,2639453,-24237460,-7406481,9494427,-5774029,-6554551,-15960994,-2449256,-14291300 }, + }, + { + { -3151181,-5046075,9282714,6866145,-31907062,-863023,-18940575,15033784,25105118,-7894876 }, + { -24326370,15950226,-31801215,-14592823,-11662737,-5090925,1573892,-2625887,2198790,-15804619 }, + { -3099351,10324967,-2241613,7453183,-5446979,-2735503,-13812022,-16236442,-32461234,-12290683 }, + }, +} ; + + +/* +r = a * A + b * B +where a = a[0]+256*a[1]+...+256^31 a[31]. +and b = b[0]+256*b[1]+...+256^31 b[31]. +B is the Ed25519 base point (x,4/5) with x positive. +*/ + +void ge_double_scalarmult_vartime(ge_p2 *r,const unsigned char *a,const ge_p3 *A,const unsigned char *b) +{ + signed char aslide[256]; + signed char bslide[256]; + ge_cached Ai[8]; /* A,3A,5A,7A,9A,11A,13A,15A */ + ge_p1p1 t; + ge_p3 u; + ge_p3 A2; + int i; + + slide(aslide,a); + slide(bslide,b); + + ge_p3_to_cached(&Ai[0],A); + ge_p3_dbl(&t,A); ge_p1p1_to_p3(&A2,&t); + ge_add(&t,&A2,&Ai[0]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[1],&u); + ge_add(&t,&A2,&Ai[1]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[2],&u); + ge_add(&t,&A2,&Ai[2]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[3],&u); + ge_add(&t,&A2,&Ai[3]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[4],&u); + ge_add(&t,&A2,&Ai[4]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[5],&u); + ge_add(&t,&A2,&Ai[5]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[6],&u); + ge_add(&t,&A2,&Ai[6]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[7],&u); + + ge_p2_0(r); + + for (i = 255;i >= 0;--i) { + if (aslide[i] || bslide[i]) break; + } + + for (;i >= 0;--i) { + ge_p2_dbl(&t,r); + + if (aslide[i] > 0) { + ge_p1p1_to_p3(&u,&t); + ge_add(&t,&u,&Ai[aslide[i]/2]); + } else if (aslide[i] < 0) { + ge_p1p1_to_p3(&u,&t); + ge_sub(&t,&u,&Ai[(-aslide[i])/2]); + } + + if (bslide[i] > 0) { + ge_p1p1_to_p3(&u,&t); + ge_madd(&t,&u,&Bi[bslide[i]/2]); + } else if (bslide[i] < 0) { + ge_p1p1_to_p3(&u,&t); + ge_msub(&t,&u,&Bi[(-bslide[i])/2]); + } + + ge_p1p1_to_p2(r,&t); + } +} + + +static const fe d = { +-10913610,13857413,-15372611,6949391,114729,-8787816,-6275908,-3247719,-18696448,-12055116 +} ; + + +static const fe sqrtm1 = { +-32595792,-7943725,9377950,3500415,12389472,-272473,-25146209,-2005654,326686,11406482 +} ; + + +int ge_frombytes_negate_vartime(ge_p3 *h,const unsigned char *s) +{ + fe u; + fe v; + fe v3; + fe vxx; + fe check; + + fe_frombytes(h->Y,s); + fe_1(h->Z); + fe_sq(u,h->Y); + fe_mul(v,u,d); + fe_sub(u,u,h->Z); /* u = y^2-1 */ + fe_add(v,v,h->Z); /* v = dy^2+1 */ + + fe_sq(v3,v); + fe_mul(v3,v3,v); /* v3 = v^3 */ + fe_sq(h->X,v3); + fe_mul(h->X,h->X,v); + fe_mul(h->X,h->X,u); /* x = uv^7 */ + + fe_pow22523(h->X,h->X); /* x = (uv^7)^((q-5)/8) */ + fe_mul(h->X,h->X,v3); + fe_mul(h->X,h->X,u); /* x = uv^3(uv^7)^((q-5)/8) */ + + fe_sq(vxx,h->X); + fe_mul(vxx,vxx,v); + fe_sub(check,vxx,u); /* vx^2-u */ + if (fe_isnonzero(check)) { + fe_add(check,vxx,u); /* vx^2+u */ + if (fe_isnonzero(check)) return -1; + fe_mul(h->X,h->X,sqrtm1); + } + + if (fe_isnegative(h->X) == (s[31] >> 7)) + fe_neg(h->X,h->X); + + fe_mul(h->T,h->X,h->Y); + return 0; +} + + +/* ge madd */ +/* +r = p + q +*/ + +void ge_madd(ge_p1p1 *r,const ge_p3 *p,const ge_precomp *q) +{ + fe t0; + fe_add(r->X,p->Y,p->X); + fe_sub(r->Y,p->Y,p->X); + fe_mul(r->Z,r->X,q->yplusx); + fe_mul(r->Y,r->Y,q->yminusx); + fe_mul(r->T,q->xy2d,p->T); + fe_add(t0,p->Z,p->Z); + fe_sub(r->X,r->Z,r->Y); + fe_add(r->Y,r->Z,r->Y); + fe_add(r->Z,t0,r->T); + fe_sub(r->T,t0,r->T); +} + + +/* ge msub */ + +/* +r = p - q +*/ + +void ge_msub(ge_p1p1 *r,const ge_p3 *p,const ge_precomp *q) +{ + fe t0; + fe_add(r->X,p->Y,p->X); + fe_sub(r->Y,p->Y,p->X); + fe_mul(r->Z,r->X,q->yminusx); + fe_mul(r->Y,r->Y,q->yplusx); + fe_mul(r->T,q->xy2d,p->T); + fe_add(t0,p->Z,p->Z); + fe_sub(r->X,r->Z,r->Y); + fe_add(r->Y,r->Z,r->Y); + fe_sub(r->Z,t0,r->T); + fe_add(r->T,t0,r->T); +} + + +/* ge p1p1 to p2 */ +/* +r = p +*/ + +extern void ge_p1p1_to_p2(ge_p2 *r,const ge_p1p1 *p) +{ + fe_mul(r->X,p->X,p->T); + fe_mul(r->Y,p->Y,p->Z); + fe_mul(r->Z,p->Z,p->T); +} + + +/* ge p1p1 to p3 */ + +/* +r = p +*/ + +extern void ge_p1p1_to_p3(ge_p3 *r,const ge_p1p1 *p) +{ + fe_mul(r->X,p->X,p->T); + fe_mul(r->Y,p->Y,p->Z); + fe_mul(r->Z,p->Z,p->T); + fe_mul(r->T,p->X,p->Y); +} + + +/* ge p2 0 */ + +void ge_p2_0(ge_p2 *h) +{ + fe_0(h->X); + fe_1(h->Y); + fe_1(h->Z); +} + + +/* ge p2 dbl */ + +/* +r = 2 * p +*/ + +void ge_p2_dbl(ge_p1p1 *r,const ge_p2 *p) +{ + fe t0; + fe_sq(r->X,p->X); + fe_sq(r->Z,p->Y); + fe_sq2(r->T,p->Z); + fe_add(r->Y,p->X,p->Y); + fe_sq(t0,r->Y); + fe_add(r->Y,r->Z,r->X); + fe_sub(r->Z,r->Z,r->X); + fe_sub(r->X,t0,r->Y); + fe_sub(r->T,r->T,r->Z); +} + + +/* ge p3 0 */ + +void ge_p3_0(ge_p3 *h) +{ + fe_0(h->X); + fe_1(h->Y); + fe_1(h->Z); + fe_0(h->T); +} + + +/* ge p3 dble */ + +/* +r = 2 * p +*/ + +void ge_p3_dbl(ge_p1p1 *r,const ge_p3 *p) +{ + ge_p2 q; + ge_p3_to_p2(&q,p); + ge_p2_dbl(r,&q); +} + + +/* ge p3 to cached */ + +/* +r = p +*/ + +static const fe d2 = { +-21827239,-5839606,-30745221,13898782,229458,15978800,-12551817,-6495438,29715968,9444199 +} ; + + +extern void ge_p3_to_cached(ge_cached *r,const ge_p3 *p) +{ + fe_add(r->YplusX,p->Y,p->X); + fe_sub(r->YminusX,p->Y,p->X); + fe_copy(r->Z,p->Z); + fe_mul(r->T2d,p->T,d2); +} + + +/* ge p3 to p2 */ +/* +r = p +*/ + +extern void ge_p3_to_p2(ge_p2 *r,const ge_p3 *p) +{ + fe_copy(r->X,p->X); + fe_copy(r->Y,p->Y); + fe_copy(r->Z,p->Z); +} + + +/* ge p3 tobytes */ +void ge_p3_tobytes(unsigned char *s,const ge_p3 *h) +{ + fe recip; + fe x; + fe y; + + fe_invert(recip,h->Z); + fe_mul(x,h->X,recip); + fe_mul(y,h->Y,recip); + fe_tobytes(s,y); + s[31] ^= fe_isnegative(x) << 7; +} + + +/* ge_precomp_0 */ +void ge_precomp_0(ge_precomp *h) +{ + fe_1(h->yplusx); + fe_1(h->yminusx); + fe_0(h->xy2d); +} + + +/* ge_sub */ +/* +r = p - q +*/ + +void ge_sub(ge_p1p1 *r,const ge_p3 *p,const ge_cached *q) +{ + fe t0; + fe_add(r->X,p->Y,p->X); + fe_sub(r->Y,p->Y,p->X); + fe_mul(r->Z,r->X,q->YminusX); + fe_mul(r->Y,r->Y,q->YplusX); + fe_mul(r->T,q->T2d,p->T); + fe_mul(r->X,p->Z,q->Z); + fe_add(t0,r->X,r->X); + fe_sub(r->X,r->Z,r->Y); + fe_add(r->Y,r->Z,r->Y); + fe_sub(r->Z,t0,r->T); + fe_add(r->T,t0,r->T); +} + + +/* ge tobytes */ +void ge_tobytes(unsigned char *s,const ge_p2 *h) +{ + fe recip; + fe x; + fe y; + + fe_invert(recip,h->Z); + fe_mul(x,h->X,recip); + fe_mul(y,h->Y,recip); + fe_tobytes(s,y); + s[31] ^= fe_isnegative(x) << 7; +} +#endif /* HAVE_ED25519 */ + diff --git a/wolfcrypt/test/test.c b/wolfcrypt/test/test.c index 51071424cd4..c31ebb6e0b5 100644 --- a/wolfcrypt/test/test.c +++ b/wolfcrypt/test/test.c @@ -66,6 +66,9 @@ #ifdef HAVE_ECC25519 #include #endif +#ifdef HAVE_ED25519 + #include +#endif #ifdef HAVE_BLAKE2 #include #endif @@ -191,6 +194,9 @@ int pbkdf2_test(void); #ifdef HAVE_ECC25519 int ecc25519_test(void); #endif +#ifdef HAVE_ED25519 + int ed25519_test(void); +#endif #ifdef HAVE_BLAKE2 int blake2b_test(void); #endif @@ -524,6 +530,13 @@ int wolfcrypt_test(void* args) printf( "ECC25519 test passed!\n"); #endif +#ifdef HAVE_ED25519 + if ( (ret = ed25519_test()) != 0) + return err_sys("ED25519 test failed!\n", ret); + else + printf( "ED25519 test passed!\n"); +#endif + #ifdef HAVE_LIBZ if ( (ret = compress_test()) != 0) return err_sys("COMPRESS test failed!\n", ret); @@ -5274,7 +5287,7 @@ int ecc25519_test(void) if (y != x) return -1006; - if (memcmp(sharedA, sharedB, x)) + if (XMEMCMP(sharedA, sharedB, x)) return -1007; /* export a public key and import it for another user */ @@ -5289,7 +5302,7 @@ int ecc25519_test(void) if (wc_ecc25519_shared_secret(&userB, &pubKey, sharedB, &y) != 0) return -1010; - if (memcmp(sharedA, sharedB, y)) + if (XMEMCMP(sharedA, sharedB, y)) return -1011; /* import RFC test vectors and compare shared key */ @@ -5306,7 +5319,7 @@ int ecc25519_test(void) if (wc_ecc25519_shared_secret(&userA, &userB, sharedB, &y) != 0) return -1014; - if (memcmp(ss, sharedB, y)) + if (XMEMCMP(ss, sharedB, y)) return -1015; /* test swaping roles of keys and generating same shared key */ @@ -5314,7 +5327,7 @@ int ecc25519_test(void) if (wc_ecc25519_shared_secret(&userB, &userA, sharedB, &y) != 0) return -1016; - if (memcmp(ss, sharedB, y)) + if (XMEMCMP(ss, sharedB, y)) return -1017; /* clean up keys when done */ @@ -5331,6 +5344,419 @@ int ecc25519_test(void) #endif /* HAVE_ECC25519 */ +#ifdef HAVE_ED25519 +int ed25519_test(void) +{ + RNG rng; + byte out[ED25519_SIG_SIZE]; + byte exportPKey[ED25519_KEY_SIZE]; + byte exportSKey[ED25519_KEY_SIZE]; + word32 outlen; + word32 exportPSz; + word32 exportSSz; + word32 keySz, sigSz; + int i, verify; + ed25519_key key; + ed25519_key key2; + + /* test vectors from + https://tools.ietf.org/html/draft-josefsson-eddsa-ed25519-02 + */ + + const byte sKey1[] = { + 0x9d,0x61,0xb1,0x9d,0xef,0xfd,0x5a,0x60, + 0xba,0x84,0x4a,0xf4,0x92,0xec,0x2c,0xc4, + 0x44,0x49,0xc5,0x69,0x7b,0x32,0x69,0x19, + 0x70,0x3b,0xac,0x03,0x1c,0xae,0x7f,0x60 + }; + + const byte sKey2[] = { + 0x4c,0xcd,0x08,0x9b,0x28,0xff,0x96,0xda, + 0x9d,0xb6,0xc3,0x46,0xec,0x11,0x4e,0x0f, + 0x5b,0x8a,0x31,0x9f,0x35,0xab,0xa6,0x24, + 0xda,0x8c,0xf6,0xed,0x4f,0xb8,0xa6,0xfb + }; + + const byte sKey3[] = { + 0xc5,0xaa,0x8d,0xf4,0x3f,0x9f,0x83,0x7b, + 0xed,0xb7,0x44,0x2f,0x31,0xdc,0xb7,0xb1, + 0x66,0xd3,0x85,0x35,0x07,0x6f,0x09,0x4b, + 0x85,0xce,0x3a,0x2e,0x0b,0x44,0x58,0xf7 + }; + + /* uncompressed test */ + const byte sKey4[] = { + 0x9d,0x61,0xb1,0x9d,0xef,0xfd,0x5a,0x60, + 0xba,0x84,0x4a,0xf4,0x92,0xec,0x2c,0xc4, + 0x44,0x49,0xc5,0x69,0x7b,0x32,0x69,0x19, + 0x70,0x3b,0xac,0x03,0x1c,0xae,0x7f,0x60 + }; + + /* compressed prefix test */ + const byte sKey5[] = { + 0x9d,0x61,0xb1,0x9d,0xef,0xfd,0x5a,0x60, + 0xba,0x84,0x4a,0xf4,0x92,0xec,0x2c,0xc4, + 0x44,0x49,0xc5,0x69,0x7b,0x32,0x69,0x19, + 0x70,0x3b,0xac,0x03,0x1c,0xae,0x7f,0x60 + }; + + const byte sKey6[] = { + 0xf5,0xe5,0x76,0x7c,0xf1,0x53,0x31,0x95, + 0x17,0x63,0x0f,0x22,0x68,0x76,0xb8,0x6c, + 0x81,0x60,0xcc,0x58,0x3b,0xc0,0x13,0x74, + 0x4c,0x6b,0xf2,0x55,0xf5,0xcc,0x0e,0xe5 + }; + + const byte* sKeys[] = {sKey1, sKey2, sKey3, sKey4, sKey5, sKey6}; + + const byte pKey1[] = { + 0xd7,0x5a,0x98,0x01,0x82,0xb1,0x0a,0xb7, + 0xd5,0x4b,0xfe,0xd3,0xc9,0x64,0x07,0x3a, + 0x0e,0xe1,0x72,0xf3,0xda,0xa6,0x23,0x25, + 0xaf,0x02,0x1a,0x68,0xf7,0x07,0x51,0x1a + }; + + const byte pKey2[] = { + 0x3d,0x40,0x17,0xc3,0xe8,0x43,0x89,0x5a, + 0x92,0xb7,0x0a,0xa7,0x4d,0x1b,0x7e,0xbc, + 0x9c,0x98,0x2c,0xcf,0x2e,0xc4,0x96,0x8c, + 0xc0,0xcd,0x55,0xf1,0x2a,0xf4,0x66,0x0c + }; + + const byte pKey3[] = { + 0xfc,0x51,0xcd,0x8e,0x62,0x18,0xa1,0xa3, + 0x8d,0xa4,0x7e,0xd0,0x02,0x30,0xf0,0x58, + 0x08,0x16,0xed,0x13,0xba,0x33,0x03,0xac, + 0x5d,0xeb,0x91,0x15,0x48,0x90,0x80,0x25 + }; + + /* uncompressed test */ + const byte pKey4[] = { + 0x04,0x55,0xd0,0xe0,0x9a,0x2b,0x9d,0x34, + 0x29,0x22,0x97,0xe0,0x8d,0x60,0xd0,0xf6, + 0x20,0xc5,0x13,0xd4,0x72,0x53,0x18,0x7c, + 0x24,0xb1,0x27,0x86,0xbd,0x77,0x76,0x45, + 0xce,0x1a,0x51,0x07,0xf7,0x68,0x1a,0x02, + 0xaf,0x25,0x23,0xa6,0xda,0xf3,0x72,0xe1, + 0x0e,0x3a,0x07,0x64,0xc9,0xd3,0xfe,0x4b, + 0xd5,0xb7,0x0a,0xb1,0x82,0x01,0x98,0x5a, + 0xd7 + }; + + /* compressed prefix */ + const byte pKey5[] = { + 0x40,0xd7,0x5a,0x98,0x01,0x82,0xb1,0x0a,0xb7, + 0xd5,0x4b,0xfe,0xd3,0xc9,0x64,0x07,0x3a, + 0x0e,0xe1,0x72,0xf3,0xda,0xa6,0x23,0x25, + 0xaf,0x02,0x1a,0x68,0xf7,0x07,0x51,0x1a + }; + + const byte pKey6[] = { + 0x27,0x81,0x17,0xfc,0x14,0x4c,0x72,0x34, + 0x0f,0x67,0xd0,0xf2,0x31,0x6e,0x83,0x86, + 0xce,0xff,0xbf,0x2b,0x24,0x28,0xc9,0xc5, + 0x1f,0xef,0x7c,0x59,0x7f,0x1d,0x42,0x6e + }; + + const byte* pKeys[] = {pKey1, pKey2, pKey3, pKey4, pKey5, pKey6}; + const byte pKeySz[] = {sizeof(pKey1), sizeof(pKey2), sizeof(pKey3), + sizeof(pKey4), sizeof(pKey5), sizeof(pKey6)}; + + const byte sig1[] = { + 0xe5,0x56,0x43,0x00,0xc3,0x60,0xac,0x72, + 0x90,0x86,0xe2,0xcc,0x80,0x6e,0x82,0x8a, + 0x84,0x87,0x7f,0x1e,0xb8,0xe5,0xd9,0x74, + 0xd8,0x73,0xe0,0x65,0x22,0x49,0x01,0x55, + 0x5f,0xb8,0x82,0x15,0x90,0xa3,0x3b,0xac, + 0xc6,0x1e,0x39,0x70,0x1c,0xf9,0xb4,0x6b, + 0xd2,0x5b,0xf5,0xf0,0x59,0x5b,0xbe,0x24, + 0x65,0x51,0x41,0x43,0x8e,0x7a,0x10,0x0b + }; + + const byte sig2[] = { + 0x92,0xa0,0x09,0xa9,0xf0,0xd4,0xca,0xb8, + 0x72,0x0e,0x82,0x0b,0x5f,0x64,0x25,0x40, + 0xa2,0xb2,0x7b,0x54,0x16,0x50,0x3f,0x8f, + 0xb3,0x76,0x22,0x23,0xeb,0xdb,0x69,0xda, + 0x08,0x5a,0xc1,0xe4,0x3e,0x15,0x99,0x6e, + 0x45,0x8f,0x36,0x13,0xd0,0xf1,0x1d,0x8c, + 0x38,0x7b,0x2e,0xae,0xb4,0x30,0x2a,0xee, + 0xb0,0x0d,0x29,0x16,0x12,0xbb,0x0c,0x00 + }; + + const byte sig3[] = { + 0x62,0x91,0xd6,0x57,0xde,0xec,0x24,0x02, + 0x48,0x27,0xe6,0x9c,0x3a,0xbe,0x01,0xa3, + 0x0c,0xe5,0x48,0xa2,0x84,0x74,0x3a,0x44, + 0x5e,0x36,0x80,0xd7,0xdb,0x5a,0xc3,0xac, + 0x18,0xff,0x9b,0x53,0x8d,0x16,0xf2,0x90, + 0xae,0x67,0xf7,0x60,0x98,0x4d,0xc6,0x59, + 0x4a,0x7c,0x15,0xe9,0x71,0x6e,0xd2,0x8d, + 0xc0,0x27,0xbe,0xce,0xea,0x1e,0xc4,0x0a + }; + + /* uncompressed test */ + const byte sig4[] = { + 0xe5,0x56,0x43,0x00,0xc3,0x60,0xac,0x72, + 0x90,0x86,0xe2,0xcc,0x80,0x6e,0x82,0x8a, + 0x84,0x87,0x7f,0x1e,0xb8,0xe5,0xd9,0x74, + 0xd8,0x73,0xe0,0x65,0x22,0x49,0x01,0x55, + 0x5f,0xb8,0x82,0x15,0x90,0xa3,0x3b,0xac, + 0xc6,0x1e,0x39,0x70,0x1c,0xf9,0xb4,0x6b, + 0xd2,0x5b,0xf5,0xf0,0x59,0x5b,0xbe,0x24, + 0x65,0x51,0x41,0x43,0x8e,0x7a,0x10,0x0b + }; + + /* compressed prefix */ + const byte sig5[] = { + 0xe5,0x56,0x43,0x00,0xc3,0x60,0xac,0x72, + 0x90,0x86,0xe2,0xcc,0x80,0x6e,0x82,0x8a, + 0x84,0x87,0x7f,0x1e,0xb8,0xe5,0xd9,0x74, + 0xd8,0x73,0xe0,0x65,0x22,0x49,0x01,0x55, + 0x5f,0xb8,0x82,0x15,0x90,0xa3,0x3b,0xac, + 0xc6,0x1e,0x39,0x70,0x1c,0xf9,0xb4,0x6b, + 0xd2,0x5b,0xf5,0xf0,0x59,0x5b,0xbe,0x24, + 0x65,0x51,0x41,0x43,0x8e,0x7a,0x10,0x0b + }; + + const byte sig6[] = { + 0x0a,0xab,0x4c,0x90,0x05,0x01,0xb3,0xe2, + 0x4d,0x7c,0xdf,0x46,0x63,0x32,0x6a,0x3a, + 0x87,0xdf,0x5e,0x48,0x43,0xb2,0xcb,0xdb, + 0x67,0xcb,0xf6,0xe4,0x60,0xfe,0xc3,0x50, + 0xaa,0x53,0x71,0xb1,0x50,0x8f,0x9f,0x45, + 0x28,0xec,0xea,0x23,0xc4,0x36,0xd9,0x4b, + 0x5e,0x8f,0xcd,0x4f,0x68,0x1e,0x30,0xa6, + 0xac,0x00,0xa9,0x70,0x4a,0x18,0x8a,0x03 + }; + + const byte* sigs[] = {sig1, sig2, sig3, sig4, sig5, sig6}; + + const byte msg1[] = {}; + const byte msg2[] = {0x72}; + const byte msg3[] = {0xAF,0x82}; + + /* test of a 1024 byte long message */ + const byte msg4[] = { + 0x08,0xb8,0xb2,0xb7,0x33,0x42,0x42,0x43, + 0x76,0x0f,0xe4,0x26,0xa4,0xb5,0x49,0x08, + 0x63,0x21,0x10,0xa6,0x6c,0x2f,0x65,0x91, + 0xea,0xbd,0x33,0x45,0xe3,0xe4,0xeb,0x98, + 0xfa,0x6e,0x26,0x4b,0xf0,0x9e,0xfe,0x12, + 0xee,0x50,0xf8,0xf5,0x4e,0x9f,0x77,0xb1, + 0xe3,0x55,0xf6,0xc5,0x05,0x44,0xe2,0x3f, + 0xb1,0x43,0x3d,0xdf,0x73,0xbe,0x84,0xd8, + 0x79,0xde,0x7c,0x00,0x46,0xdc,0x49,0x96, + 0xd9,0xe7,0x73,0xf4,0xbc,0x9e,0xfe,0x57, + 0x38,0x82,0x9a,0xdb,0x26,0xc8,0x1b,0x37, + 0xc9,0x3a,0x1b,0x27,0x0b,0x20,0x32,0x9d, + 0x65,0x86,0x75,0xfc,0x6e,0xa5,0x34,0xe0, + 0x81,0x0a,0x44,0x32,0x82,0x6b,0xf5,0x8c, + 0x94,0x1e,0xfb,0x65,0xd5,0x7a,0x33,0x8b, + 0xbd,0x2e,0x26,0x64,0x0f,0x89,0xff,0xbc, + 0x1a,0x85,0x8e,0xfc,0xb8,0x55,0x0e,0xe3, + 0xa5,0xe1,0x99,0x8b,0xd1,0x77,0xe9,0x3a, + 0x73,0x63,0xc3,0x44,0xfe,0x6b,0x19,0x9e, + 0xe5,0xd0,0x2e,0x82,0xd5,0x22,0xc4,0xfe, + 0xba,0x15,0x45,0x2f,0x80,0x28,0x8a,0x82, + 0x1a,0x57,0x91,0x16,0xec,0x6d,0xad,0x2b, + 0x3b,0x31,0x0d,0xa9,0x03,0x40,0x1a,0xa6, + 0x21,0x00,0xab,0x5d,0x1a,0x36,0x55,0x3e, + 0x06,0x20,0x3b,0x33,0x89,0x0c,0xc9,0xb8, + 0x32,0xf7,0x9e,0xf8,0x05,0x60,0xcc,0xb9, + 0xa3,0x9c,0xe7,0x67,0x96,0x7e,0xd6,0x28, + 0xc6,0xad,0x57,0x3c,0xb1,0x16,0xdb,0xef, + 0xef,0xd7,0x54,0x99,0xda,0x96,0xbd,0x68, + 0xa8,0xa9,0x7b,0x92,0x8a,0x8b,0xbc,0x10, + 0x3b,0x66,0x21,0xfc,0xde,0x2b,0xec,0xa1, + 0x23,0x1d,0x20,0x6b,0xe6,0xcd,0x9e,0xc7, + 0xaf,0xf6,0xf6,0xc9,0x4f,0xcd,0x72,0x04, + 0xed,0x34,0x55,0xc6,0x8c,0x83,0xf4,0xa4, + 0x1d,0xa4,0xaf,0x2b,0x74,0xef,0x5c,0x53, + 0xf1,0xd8,0xac,0x70,0xbd,0xcb,0x7e,0xd1, + 0x85,0xce,0x81,0xbd,0x84,0x35,0x9d,0x44, + 0x25,0x4d,0x95,0x62,0x9e,0x98,0x55,0xa9, + 0x4a,0x7c,0x19,0x58,0xd1,0xf8,0xad,0xa5, + 0xd0,0x53,0x2e,0xd8,0xa5,0xaa,0x3f,0xb2, + 0xd1,0x7b,0xa7,0x0e,0xb6,0x24,0x8e,0x59, + 0x4e,0x1a,0x22,0x97,0xac,0xbb,0xb3,0x9d, + 0x50,0x2f,0x1a,0x8c,0x6e,0xb6,0xf1,0xce, + 0x22,0xb3,0xde,0x1a,0x1f,0x40,0xcc,0x24, + 0x55,0x41,0x19,0xa8,0x31,0xa9,0xaa,0xd6, + 0x07,0x9c,0xad,0x88,0x42,0x5d,0xe6,0xbd, + 0xe1,0xa9,0x18,0x7e,0xbb,0x60,0x92,0xcf, + 0x67,0xbf,0x2b,0x13,0xfd,0x65,0xf2,0x70, + 0x88,0xd7,0x8b,0x7e,0x88,0x3c,0x87,0x59, + 0xd2,0xc4,0xf5,0xc6,0x5a,0xdb,0x75,0x53, + 0x87,0x8a,0xd5,0x75,0xf9,0xfa,0xd8,0x78, + 0xe8,0x0a,0x0c,0x9b,0xa6,0x3b,0xcb,0xcc, + 0x27,0x32,0xe6,0x94,0x85,0xbb,0xc9,0xc9, + 0x0b,0xfb,0xd6,0x24,0x81,0xd9,0x08,0x9b, + 0xec,0xcf,0x80,0xcf,0xe2,0xdf,0x16,0xa2, + 0xcf,0x65,0xbd,0x92,0xdd,0x59,0x7b,0x07, + 0x07,0xe0,0x91,0x7a,0xf4,0x8b,0xbb,0x75, + 0xfe,0xd4,0x13,0xd2,0x38,0xf5,0x55,0x5a, + 0x7a,0x56,0x9d,0x80,0xc3,0x41,0x4a,0x8d, + 0x08,0x59,0xdc,0x65,0xa4,0x61,0x28,0xba, + 0xb2,0x7a,0xf8,0x7a,0x71,0x31,0x4f,0x31, + 0x8c,0x78,0x2b,0x23,0xeb,0xfe,0x80,0x8b, + 0x82,0xb0,0xce,0x26,0x40,0x1d,0x2e,0x22, + 0xf0,0x4d,0x83,0xd1,0x25,0x5d,0xc5,0x1a, + 0xdd,0xd3,0xb7,0x5a,0x2b,0x1a,0xe0,0x78, + 0x45,0x04,0xdf,0x54,0x3a,0xf8,0x96,0x9b, + 0xe3,0xea,0x70,0x82,0xff,0x7f,0xc9,0x88, + 0x8c,0x14,0x4d,0xa2,0xaf,0x58,0x42,0x9e, + 0xc9,0x60,0x31,0xdb,0xca,0xd3,0xda,0xd9, + 0xaf,0x0d,0xcb,0xaa,0xaf,0x26,0x8c,0xb8, + 0xfc,0xff,0xea,0xd9,0x4f,0x3c,0x7c,0xa4, + 0x95,0xe0,0x56,0xa9,0xb4,0x7a,0xcd,0xb7, + 0x51,0xfb,0x73,0xe6,0x66,0xc6,0xc6,0x55, + 0xad,0xe8,0x29,0x72,0x97,0xd0,0x7a,0xd1, + 0xba,0x5e,0x43,0xf1,0xbc,0xa3,0x23,0x01, + 0x65,0x13,0x39,0xe2,0x29,0x04,0xcc,0x8c, + 0x42,0xf5,0x8c,0x30,0xc0,0x4a,0xaf,0xdb, + 0x03,0x8d,0xda,0x08,0x47,0xdd,0x98,0x8d, + 0xcd,0xa6,0xf3,0xbf,0xd1,0x5c,0x4b,0x4c, + 0x45,0x25,0x00,0x4a,0xa0,0x6e,0xef,0xf8, + 0xca,0x61,0x78,0x3a,0xac,0xec,0x57,0xfb, + 0x3d,0x1f,0x92,0xb0,0xfe,0x2f,0xd1,0xa8, + 0x5f,0x67,0x24,0x51,0x7b,0x65,0xe6,0x14, + 0xad,0x68,0x08,0xd6,0xf6,0xee,0x34,0xdf, + 0xf7,0x31,0x0f,0xdc,0x82,0xae,0xbf,0xd9, + 0x04,0xb0,0x1e,0x1d,0xc5,0x4b,0x29,0x27, + 0x09,0x4b,0x2d,0xb6,0x8d,0x6f,0x90,0x3b, + 0x68,0x40,0x1a,0xde,0xbf,0x5a,0x7e,0x08, + 0xd7,0x8f,0xf4,0xef,0x5d,0x63,0x65,0x3a, + 0x65,0x04,0x0c,0xf9,0xbf,0xd4,0xac,0xa7, + 0x98,0x4a,0x74,0xd3,0x71,0x45,0x98,0x67, + 0x80,0xfc,0x0b,0x16,0xac,0x45,0x16,0x49, + 0xde,0x61,0x88,0xa7,0xdb,0xdf,0x19,0x1f, + 0x64,0xb5,0xfc,0x5e,0x2a,0xb4,0x7b,0x57, + 0xf7,0xf7,0x27,0x6c,0xd4,0x19,0xc1,0x7a, + 0x3c,0xa8,0xe1,0xb9,0x39,0xae,0x49,0xe4, + 0x88,0xac,0xba,0x6b,0x96,0x56,0x10,0xb5, + 0x48,0x01,0x09,0xc8,0xb1,0x7b,0x80,0xe1, + 0xb7,0xb7,0x50,0xdf,0xc7,0x59,0x8d,0x5d, + 0x50,0x11,0xfd,0x2d,0xcc,0x56,0x00,0xa3, + 0x2e,0xf5,0xb5,0x2a,0x1e,0xcc,0x82,0x0e, + 0x30,0x8a,0xa3,0x42,0x72,0x1a,0xac,0x09, + 0x43,0xbf,0x66,0x86,0xb6,0x4b,0x25,0x79, + 0x37,0x65,0x04,0xcc,0xc4,0x93,0xd9,0x7e, + 0x6a,0xed,0x3f,0xb0,0xf9,0xcd,0x71,0xa4, + 0x3d,0xd4,0x97,0xf0,0x1f,0x17,0xc0,0xe2, + 0xcb,0x37,0x97,0xaa,0x2a,0x2f,0x25,0x66, + 0x56,0x16,0x8e,0x6c,0x49,0x6a,0xfc,0x5f, + 0xb9,0x32,0x46,0xf6,0xb1,0x11,0x63,0x98, + 0xa3,0x46,0xf1,0xa6,0x41,0xf3,0xb0,0x41, + 0xe9,0x89,0xf7,0x91,0x4f,0x90,0xcc,0x2c, + 0x7f,0xff,0x35,0x78,0x76,0xe5,0x06,0xb5, + 0x0d,0x33,0x4b,0xa7,0x7c,0x22,0x5b,0xc3, + 0x07,0xba,0x53,0x71,0x52,0xf3,0xf1,0x61, + 0x0e,0x4e,0xaf,0xe5,0x95,0xf6,0xd9,0xd9, + 0x0d,0x11,0xfa,0xa9,0x33,0xa1,0x5e,0xf1, + 0x36,0x95,0x46,0x86,0x8a,0x7f,0x3a,0x45, + 0xa9,0x67,0x68,0xd4,0x0f,0xd9,0xd0,0x34, + 0x12,0xc0,0x91,0xc6,0x31,0x5c,0xf4,0xfd, + 0xe7,0xcb,0x68,0x60,0x69,0x37,0x38,0x0d, + 0xb2,0xea,0xaa,0x70,0x7b,0x4c,0x41,0x85, + 0xc3,0x2e,0xdd,0xcd,0xd3,0x06,0x70,0x5e, + 0x4d,0xc1,0xff,0xc8,0x72,0xee,0xee,0x47, + 0x5a,0x64,0xdf,0xac,0x86,0xab,0xa4,0x1c, + 0x06,0x18,0x98,0x3f,0x87,0x41,0xc5,0xef, + 0x68,0xd3,0xa1,0x01,0xe8,0xa3,0xb8,0xca, + 0xc6,0x0c,0x90,0x5c,0x15,0xfc,0x91,0x08, + 0x40,0xb9,0x4c,0x00,0xa0,0xb9,0xd0 + }; + + const byte* msgs[] = {msg1, msg2, msg3, msg1, msg1, msg4}; + const word16 msgSz[] = {sizeof(msg1), sizeof(msg2), sizeof(msg3), + sizeof(msg1), sizeof(msg1), sizeof(msg4)}; + + /* create ed25519 keys */ + wc_InitRng(&rng); + wc_ed25519_init(&key); + wc_ed25519_init(&key2); + wc_ed25519_make_key(&rng, ED25519_KEY_SIZE, &key); + wc_ed25519_make_key(&rng, ED25519_KEY_SIZE, &key2); + + /* helper functions for signature and key size */ + keySz = wc_ed25519_size(&key); + sigSz = wc_ed25519_sig_size(&key); + + for (i = 0; i < 6; i++) { + outlen = sizeof(out); + XMEMSET(out, 0, sizeof(out)); + + if (wc_ed25519_import_private_key(sKeys[i], ED25519_KEY_SIZE, pKeys[i], + pKeySz[i], &key) != 0) + return -1021; + + if (wc_ed25519_sign_hash(msgs[i], msgSz[i], out, &outlen, &key) + != 0) + return -1022; + + if (XMEMCMP(out, sigs[i], 64)) + return -1023; + + /* test verify on good msg */ + if (wc_ed25519_verify_hash(out, outlen, msgs[i], msgSz[i], &verify, + &key) != 0 || verify != 1) + return -1024; + + /* test verify on bad msg */ + out[outlen-1] = out[outlen-1] + 1; + if (wc_ed25519_verify_hash(out, outlen, msgs[i], msgSz[i], &verify, + &key) == 0 || verify == 1) + return -1025; + + /* test api for import/exporting keys */ + exportPSz = sizeof(exportPKey); + exportSSz = sizeof(exportSKey); + if (wc_ed25519_export_public(&key, exportPKey, &exportPSz) != 0) + return -1026; + + if (wc_ed25519_import_public(exportPKey, exportPSz, &key2) != 0) + return -1027; + + if (wc_ed25519_export_private_only(&key, exportSKey, &exportSSz) != 0) + return -1028; + + if (wc_ed25519_import_private_key(exportSKey, exportSSz, + exportPKey, exportPSz, &key2) != 0) + return -1029; + + /* clear "out" buffer and test sign with imported keys */ + outlen = sizeof(out); + XMEMSET(out, 0, sizeof(out)); + if (wc_ed25519_sign_hash(msgs[i], msgSz[i], out, &outlen, &key2) + != 0) + return -1030; + + if (wc_ed25519_verify_hash(out, outlen, msgs[i], msgSz[i], &verify, + &key2) != 0 || verify != 1) + return -1031; + + if (XMEMCMP(out, sigs[i], 64)) + return -1032; + } + + /* clean up keys when done */ + wc_ed25519_free(&key); + wc_ed25519_free(&key2); + +#if defined(HAVE_HASHDRBG) || defined(NO_RC4) + wc_FreeRng(&rng); +#endif + + /* hush warrnings of unused keySz and sigSz */ + (void)keySz; + (void)sigSz; + + return 0; +} +#endif /* HAVE_ED25519 */ + + #ifdef HAVE_LIBZ const byte sample_text[] = diff --git a/wolfssl/wolfcrypt/ecc25519.h b/wolfssl/wolfcrypt/ecc25519.h index 8d26a35dd5f..a6036c037cf 100644 --- a/wolfssl/wolfcrypt/ecc25519.h +++ b/wolfssl/wolfcrypt/ecc25519.h @@ -26,7 +26,7 @@ #ifdef HAVE_ECC25519 -#include +#include #include #ifdef __cplusplus diff --git a/wolfssl/wolfcrypt/ecc25519_fe.h b/wolfssl/wolfcrypt/ecc25519_fe.h deleted file mode 100644 index 055f310c1d2..00000000000 --- a/wolfssl/wolfcrypt/ecc25519_fe.h +++ /dev/null @@ -1,61 +0,0 @@ -/* ecc25519_fe.h - * - * Copyright (C) 2006-2015 wolfSSL Inc. - * - * This file is part of wolfSSL. (formerly known as CyaSSL) - * - * wolfSSL is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * wolfSSL is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA - */ - - /* Based On Daniel J Bernstein's curve25519 Public Domain ref10 work. */ - -#ifndef WOLF_CRYPT_ECC25519_FE_H -#define WOLF_CRYPT_ECC25519_FE_H - -#include - -#ifdef HAVE_ECC25519 - -#include - -typedef int32_t fe[10]; - -/* -fe means field element. -Here the field is \Z/(2^255-19). -An element t, entries t[0]...t[9], represents the integer -t[0]+2^26 t[1]+2^51 t[2]+2^77 t[3]+2^102 t[4]+...+2^230 t[9]. -Bounds on each t[i] vary depending on context. -*/ - -void fe_frombytes(fe,const unsigned char *); -void fe_tobytes(unsigned char *,fe); - -void fe_copy(fe,fe); -void fe_0(fe); -void fe_1(fe); -void fe_cswap(fe,fe,unsigned int); - -void fe_add(fe,fe,fe); -void fe_sub(fe,fe,fe); -void fe_mul(fe,fe,fe); -void fe_sq(fe,fe); -void fe_mul121666(fe,fe); -void fe_invert(fe,fe); - - -#endif /* HAVE_ECC25519 */ -#endif /* include guard */ - diff --git a/wolfssl/wolfcrypt/ecc25519_montgomery.h b/wolfssl/wolfcrypt/ecc25519_montgomery.h deleted file mode 100644 index 4d1e37ca2ac..00000000000 --- a/wolfssl/wolfcrypt/ecc25519_montgomery.h +++ /dev/null @@ -1,42 +0,0 @@ -/* ecc25519_montgomery.h - * - * Copyright (C) 2006-2015 wolfSSL Inc. - * - * This file is part of wolfSSL. (formerly known as CyaSSL) - * - * wolfSSL is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * wolfSSL is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA - */ - - /* Based On Daniel J Bernstein's curve25519 Public Domain ref10 work. */ - -fe_sub(tmp0,x3,z3); -fe_sub(tmp1,x2,z2); -fe_add(x2,x2,z2); -fe_add(z2,x3,z3); -fe_mul(z3,tmp0,x2); -fe_mul(z2,z2,tmp1); -fe_sq(tmp0,tmp1); -fe_sq(tmp1,x2); -fe_add(x3,z3,z2); -fe_sub(z2,z3,z2); -fe_mul(x2,tmp1,tmp0); -fe_sub(tmp1,tmp1,tmp0); -fe_sq(z2,z2); -fe_mul121666(z3,tmp1); -fe_sq(x3,x3); -fe_add(tmp0,tmp0,z3); -fe_mul(z3,x1,z2); -fe_mul(z2,tmp1,tmp0); - diff --git a/wolfssl/wolfcrypt/ecc25519_pow225521.h b/wolfssl/wolfcrypt/ecc25519_pow225521.h deleted file mode 100644 index 2c2ca5b6059..00000000000 --- a/wolfssl/wolfcrypt/ecc25519_pow225521.h +++ /dev/null @@ -1,46 +0,0 @@ -/* ecc25519_pow225521.h - * - * Copyright (C) 2006-2015 wolfSSL Inc. - * - * This file is part of wolfSSL. (formerly known as CyaSSL) - * - * wolfSSL is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * wolfSSL is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA - */ - - /* Based On Daniel J Bernstein's curve25519 Public Domain ref10 work. */ - -fe_sq(t0,z); for (i = 1;i < 1;++i) fe_sq(t0,t0); -fe_sq(t1,t0); for (i = 1;i < 2;++i) fe_sq(t1,t1); -fe_mul(t1,z,t1); -fe_mul(t0,t0,t1); -fe_sq(t2,t0); for (i = 1;i < 1;++i) fe_sq(t2,t2); -fe_mul(t1,t1,t2); -fe_sq(t2,t1); for (i = 1;i < 5;++i) fe_sq(t2,t2); -fe_mul(t1,t2,t1); -fe_sq(t2,t1); for (i = 1;i < 10;++i) fe_sq(t2,t2); -fe_mul(t2,t2,t1); -fe_sq(t3,t2); for (i = 1;i < 20;++i) fe_sq(t3,t3); -fe_mul(t2,t3,t2); -fe_sq(t2,t2); for (i = 1;i < 10;++i) fe_sq(t2,t2); -fe_mul(t1,t2,t1); -fe_sq(t2,t1); for (i = 1;i < 50;++i) fe_sq(t2,t2); -fe_mul(t2,t2,t1); -fe_sq(t3,t2); for (i = 1;i < 100;++i) fe_sq(t3,t3); -fe_mul(t2,t3,t2); -fe_sq(t2,t2); for (i = 1;i < 50;++i) fe_sq(t2,t2); -fe_mul(t1,t2,t1); -fe_sq(t1,t1); for (i = 1;i < 5;++i) fe_sq(t1,t1); -fe_mul(out,t1,t0); - diff --git a/wolfssl/wolfcrypt/ed25519.h b/wolfssl/wolfcrypt/ed25519.h new file mode 100644 index 00000000000..4446ae8e82d --- /dev/null +++ b/wolfssl/wolfcrypt/ed25519.h @@ -0,0 +1,94 @@ +/* ed25519.h + * + * Copyright (C) 2006-2015 wolfSSL Inc. + * + * This file is part of wolfSSL. (formerly known as CyaSSL) + * + * wolfSSL is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * wolfSSL is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef WOLF_CRYPT_ED25519_H +#define WOLF_CRYPT_ED25519_H + +#include + +#ifdef HAVE_ED25519 + +#include +#include +#include +#include + +#ifdef __cplusplus + extern "C" { +#endif + + +/* info about EdDSA curve specifically ed25519, defined as an elliptic curve + over GF(p) */ +/* + 32, key size + "ED25519", curve name + "2^255-19", prime number + "SHA512", hash function + "-121665/121666", value of d +*/ + +#define ED25519_KEY_SIZE 32 +#define ED25519_SIG_SIZE 64 + + +/* An ED25519 Key */ +typedef struct { + byte p[32]; /* compressed public key */ + byte k[64]; /* private key : 32 secret -- 32 public */ +} ed25519_key; + + +WOLFSSL_API +int wc_ed25519_make_key(RNG* rng, int keysize, ed25519_key* key); +WOLFSSL_API +int wc_ed25519_sign_hash(const byte* in, word32 inlen, byte* out, + word32 *outlen, ed25519_key* key); +WOLFSSL_API +int wc_ed25519_verify_hash(byte* sig, word32 siglen, const byte* hash, + word32 hashlen, int* stat, ed25519_key* key); +WOLFSSL_API +int wc_ed25519_init(ed25519_key* key); +WOLFSSL_API +void wc_ed25519_free(ed25519_key* key); +WOLFSSL_API +int wc_ed25519_import_public(const byte* in, word32 inLen, ed25519_key* key); +WOLFSSL_API +int wc_ed25519_import_private_key(const byte* priv, word32 privSz, + const byte* pub, word32 pubSz, ed25519_key* key); +WOLFSSL_API +int wc_ed25519_export_public(ed25519_key*, byte* out, word32* outLen); +WOLFSSL_API +int wc_ed25519_export_private_only(ed25519_key* key, byte* out, word32* outLen); + +/* size helper */ +WOLFSSL_API +int wc_ed25519_size(ed25519_key* key); +WOLFSSL_API +int wc_ed25519_sig_size(ed25519_key* key); + +#ifdef __cplusplus + } /* extern "C" */ +#endif + +#endif /* HAVE_ED25519 */ +#endif /* WOLF_CRYPT_ED25519_H */ + diff --git a/wolfssl/wolfcrypt/fe_operations.h b/wolfssl/wolfcrypt/fe_operations.h new file mode 100644 index 00000000000..caf254e455b --- /dev/null +++ b/wolfssl/wolfcrypt/fe_operations.h @@ -0,0 +1,67 @@ +/* fe_operations.h + * + * Copyright (C) 2006-2015 wolfSSL Inc. + * + * This file is part of wolfSSL. (formerly known as CyaSSL) + * + * wolfSSL is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * wolfSSL is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + + /* Based On Daniel J Bernstein's curve25519 and ed25519 Public Domain ref10 + work. */ + +#ifndef WOLF_CRYPT_FE_OPERATIONS_H +#define WOLF_CRYPT_FE_OPERATIONS_H + +#include + +#if defined(HAVE_ECC25519) || defined(HAVE_ED25519) + +#include + +/* +fe means field element. +Here the field is \Z/(2^255-19). +An element t, entries t[0]...t[9], represents the integer +t[0]+2^26 t[1]+2^51 t[2]+2^77 t[3]+2^102 t[4]+...+2^230 t[9]. +Bounds on each t[i] vary depending on context. +*/ + +typedef int32_t fe[10]; + +WOLFSSL_LOCAL void fe_0(fe); +WOLFSSL_LOCAL void fe_1(fe); +WOLFSSL_LOCAL void fe_add(fe, const fe, const fe); +WOLFSSL_LOCAL void fe_tobytes(unsigned char *, const fe); +WOLFSSL_LOCAL void fe_sub(fe, const fe, const fe); +WOLFSSL_LOCAL void fe_invert(fe, const fe); +WOLFSSL_LOCAL void fe_sq(fe, const fe); +WOLFSSL_LOCAL void fe_sq2(fe,const fe); +WOLFSSL_LOCAL void fe_frombytes(fe,const unsigned char *); +WOLFSSL_LOCAL void fe_mul(fe,const fe,const fe); +WOLFSSL_LOCAL void fe_copy(fe, const fe); +WOLFSSL_LOCAL void fe_cswap(fe,fe,unsigned int); +WOLFSSL_LOCAL void fe_mul121666(fe,fe); +WOLFSSL_LOCAL int fe_isnonzero(const fe); +WOLFSSL_LOCAL int fe_isnegative(const fe); +WOLFSSL_LOCAL void fe_cmov(fe,const fe,unsigned int); +WOLFSSL_LOCAL void fe_neg(fe,const fe); +WOLFSSL_LOCAL void fe_pow22523(fe,const fe); +WOLFSSL_LOCAL uint64_t load_3(const unsigned char *in); +WOLFSSL_LOCAL uint64_t load_4(const unsigned char *in); + +#endif /* HAVE_ECC25519 or HAVE_ED25519 */ +#endif /* WOLF_CRYPT_FE_OPERATIONS_H */ + diff --git a/wolfssl/wolfcrypt/ge_operations.h b/wolfssl/wolfcrypt/ge_operations.h new file mode 100644 index 00000000000..8cd09c5475a --- /dev/null +++ b/wolfssl/wolfcrypt/ge_operations.h @@ -0,0 +1,106 @@ +/* ge_operations.h + * + * Copyright (C) 2006-2015 wolfSSL Inc. + * + * This file is part of wolfSSL. (formerly known as CyaSSL) + * + * wolfSSL is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * wolfSSL is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + + /* Based On Daniel J Bernstein's ed25519 Public Domain ref10 work. */ + +#ifndef WOLF_CRYPT_GE_OPERATIONS_H +#define WOLF_CRYPT_GE_OPERATIONS_H + +#include + +#ifdef HAVE_ED25519 + +#include +#include + +/* +ge means group element. + +Here the group is the set of pairs (x,y) of field elements (see fe.h) +satisfying -x^2 + y^2 = 1 + d x^2y^2 +where d = -121665/121666. + +Representations: + ge_p2 (projective): (X:Y:Z) satisfying x=X/Z, y=Y/Z + ge_p3 (extended): (X:Y:Z:T) satisfying x=X/Z, y=Y/Z, XY=ZT + ge_p1p1 (completed): ((X:Z),(Y:T)) satisfying x=X/Z, y=Y/T + ge_precomp (Duif): (y+x,y-x,2dxy) +*/ + + +typedef struct { + fe X; + fe Y; + fe Z; +} ge_p2; + +typedef struct { + fe X; + fe Y; + fe Z; + fe T; +} ge_p3; + +typedef struct { + fe X; + fe Y; + fe Z; + fe T; +} ge_p1p1; + +typedef struct { + fe yplusx; + fe yminusx; + fe xy2d; +} ge_precomp; + +typedef struct { + fe YplusX; + fe YminusX; + fe Z; + fe T2d; +} ge_cached; + +WOLFSSL_LOCAL void ge_tobytes(unsigned char *,const ge_p2 *); +WOLFSSL_LOCAL void ge_p3_tobytes(unsigned char *,const ge_p3 *); +WOLFSSL_LOCAL int ge_frombytes_negate_vartime(ge_p3 *,const unsigned char *); + +WOLFSSL_LOCAL void ge_p2_0(ge_p2 *); +WOLFSSL_LOCAL void ge_p3_0(ge_p3 *); +WOLFSSL_LOCAL void ge_precomp_0(ge_precomp *); +WOLFSSL_LOCAL void ge_p3_to_p2(ge_p2 *,const ge_p3 *); +WOLFSSL_LOCAL void ge_p3_to_cached(ge_cached *,const ge_p3 *); +WOLFSSL_LOCAL void ge_p1p1_to_p2(ge_p2 *,const ge_p1p1 *); +WOLFSSL_LOCAL void ge_p1p1_to_p3(ge_p3 *,const ge_p1p1 *); +WOLFSSL_LOCAL void ge_p2_dbl(ge_p1p1 *,const ge_p2 *); +WOLFSSL_LOCAL void ge_p3_dbl(ge_p1p1 *,const ge_p3 *); + +WOLFSSL_LOCAL void ge_madd(ge_p1p1 *,const ge_p3 *,const ge_precomp *); +WOLFSSL_LOCAL void ge_msub(ge_p1p1 *,const ge_p3 *,const ge_precomp *); +WOLFSSL_LOCAL void ge_add(ge_p1p1 *,const ge_p3 *,const ge_cached *); +WOLFSSL_LOCAL void ge_sub(ge_p1p1 *,const ge_p3 *,const ge_cached *); +WOLFSSL_LOCAL void ge_scalarmult_base(ge_p3 *,const unsigned char *); +WOLFSSL_LOCAL void ge_double_scalarmult_vartime(ge_p2 *,const unsigned char *, + const ge_p3 *,const unsigned char *); + +#endif /* HAVE_ED25519 */ +#endif /* WOLF_CRYPT_GE_OPERATIONS_H */ + diff --git a/wolfssl/wolfcrypt/include.am b/wolfssl/wolfcrypt/include.am index d82d8513467..152a5e183da 100644 --- a/wolfssl/wolfcrypt/include.am +++ b/wolfssl/wolfcrypt/include.am @@ -15,9 +15,9 @@ nobase_include_HEADERS+= \ wolfssl/wolfcrypt/dsa.h \ wolfssl/wolfcrypt/ecc.h \ wolfssl/wolfcrypt/ecc25519.h \ - wolfssl/wolfcrypt/ecc25519_fe.h \ - wolfssl/wolfcrypt/ecc25519_pow225521.h \ - wolfssl/wolfcrypt/ecc25519_montgomery.h \ + wolfssl/wolfcrypt/ed25519.h \ + wolfssl/wolfcrypt/fe_operations.h \ + wolfssl/wolfcrypt/ge_operations.h \ wolfssl/wolfcrypt/error-crypt.h \ wolfssl/wolfcrypt/fips_test.h \ wolfssl/wolfcrypt/hc128.h \ From 478a8bb0599da737a1c5513e8f25b48c38d184af Mon Sep 17 00:00:00 2001 From: toddouska Date: Thu, 19 Mar 2015 12:48:32 -0700 Subject: [PATCH 2/2] adjust ./configure format, change ed sign/verify to msg from hash --- configure.ac | 2 +- wolfcrypt/benchmark/benchmark.c | 5 +++-- wolfcrypt/src/ed25519.c | 18 +++++++++--------- wolfcrypt/test/test.c | 13 ++++++------- wolfssl/wolfcrypt/ed25519.h | 8 ++++---- 5 files changed, 23 insertions(+), 23 deletions(-) diff --git a/configure.ac b/configure.ac index d6af10bbfb9..e34baaf5ae7 100644 --- a/configure.ac +++ b/configure.ac @@ -653,7 +653,7 @@ AM_CONDITIONAL([BUILD_ECC25519], [test "x$ENABLED_ECC25519" = "xyes"]) # ED25519 AC_ARG_ENABLE([ed25519], - [ AS_HELP_STRING(--enable-ed25519 Enable ED25519 (default: disabled))], + [AS_HELP_STRING([--enable-ed25519],[Enable ED25519 (default: disabled)])], [ ENABLED_ED25519=$enableval ], [ ENABLED_ED25519=no ] ) diff --git a/wolfcrypt/benchmark/benchmark.c b/wolfcrypt/benchmark/benchmark.c index 38a7782023e..20b727a21a2 100644 --- a/wolfcrypt/benchmark/benchmark.c +++ b/wolfcrypt/benchmark/benchmark.c @@ -1773,7 +1773,7 @@ void bench_ed25519KeySign(void) for(i = 0; i < agreeTimes; i++) { x = sizeof(sig); - ret = wc_ed25519_sign_hash(digest, sizeof(digest), sig, &x, &genKey); + ret = wc_ed25519_sign_msg(digest, sizeof(digest), sig, &x, &genKey); if (ret != 0) { printf("ed25519_sign_hash failed\n"); return; @@ -1790,7 +1790,8 @@ void bench_ed25519KeySign(void) for(i = 0; i < agreeTimes; i++) { int verify = 0; - ret = wc_ed25519_verify_hash(sig, x, digest, sizeof(digest), &verify, &genKey); + ret = wc_ed25519_verify_msg(sig, x, digest, sizeof(digest), &verify, + &genKey); if (ret != 0 || verify != 1) { printf("ed25519_verify_hash failed\n"); return; diff --git a/wolfcrypt/src/ed25519.c b/wolfcrypt/src/ed25519.c index bc1df7df525..54dc25b9728 100644 --- a/wolfcrypt/src/ed25519.c +++ b/wolfcrypt/src/ed25519.c @@ -710,8 +710,8 @@ int wc_ed25519_make_key(RNG* rng, int keySz, ed25519_key* key) key is the ed25519 key to use when signing return 0 on success */ -int wc_ed25519_sign_hash(const byte* in, word32 inlen, byte* out, - word32 *outlen, ed25519_key* key) +int wc_ed25519_sign_msg(const byte* in, word32 inlen, byte* out, + word32 *outlen, ed25519_key* key) { int ret = 0; byte nonce[64]; @@ -761,12 +761,12 @@ int wc_ed25519_sign_hash(const byte* in, word32 inlen, byte* out, /* sig is array of bytes containing the signature siglen is the length of sig byte array - hash the array of bytes containing the message - hashlen length of hash array + msg the array of bytes containing the message + msglen length of msg array stat will be 1 on successful verify and 0 on unsuccessful */ -int wc_ed25519_verify_hash(byte* sig, word32 siglen, const byte* hash, - word32 hashlen, int* stat, ed25519_key* key) +int wc_ed25519_verify_msg(byte* sig, word32 siglen, const byte* msg, + word32 msglen, int* stat, ed25519_key* key) { int ret; word32 sigSz; @@ -777,7 +777,7 @@ int wc_ed25519_verify_hash(byte* sig, word32 siglen, const byte* hash, ge_p2 R; /* sanity check on arguments */ - if (sig == NULL || hash == NULL || stat == NULL || key == NULL) + if (sig == NULL || msg == NULL || stat == NULL || key == NULL) return BAD_FUNC_ARG; ret = 0; @@ -796,7 +796,7 @@ int wc_ed25519_verify_hash(byte* sig, word32 siglen, const byte* hash, ret |= wc_InitSha512(&sha); ret |= wc_Sha512Update(&sha, sig, 32); ret |= wc_Sha512Update(&sha, key->p, 32); - ret |= wc_Sha512Update(&sha, hash, hashlen); + ret |= wc_Sha512Update(&sha, msg, msglen); ret |= wc_Sha512Final(&sha, h); sc_reduce(h); @@ -818,7 +818,7 @@ int wc_ed25519_init(ed25519_key* key) if (key == NULL) return BAD_FUNC_ARG; - ForceZero(key, sizeof(ed25519_key)); + XMEMSET(key, 0, sizeof(ed25519_key)); return 0; } diff --git a/wolfcrypt/test/test.c b/wolfcrypt/test/test.c index c31ebb6e0b5..f79ecf0d5c4 100644 --- a/wolfcrypt/test/test.c +++ b/wolfcrypt/test/test.c @@ -5691,7 +5691,7 @@ int ed25519_test(void) pKeySz[i], &key) != 0) return -1021; - if (wc_ed25519_sign_hash(msgs[i], msgSz[i], out, &outlen, &key) + if (wc_ed25519_sign_msg(msgs[i], msgSz[i], out, &outlen, &key) != 0) return -1022; @@ -5699,13 +5699,13 @@ int ed25519_test(void) return -1023; /* test verify on good msg */ - if (wc_ed25519_verify_hash(out, outlen, msgs[i], msgSz[i], &verify, + if (wc_ed25519_verify_msg(out, outlen, msgs[i], msgSz[i], &verify, &key) != 0 || verify != 1) return -1024; /* test verify on bad msg */ out[outlen-1] = out[outlen-1] + 1; - if (wc_ed25519_verify_hash(out, outlen, msgs[i], msgSz[i], &verify, + if (wc_ed25519_verify_msg(out, outlen, msgs[i], msgSz[i], &verify, &key) == 0 || verify == 1) return -1025; @@ -5728,12 +5728,11 @@ int ed25519_test(void) /* clear "out" buffer and test sign with imported keys */ outlen = sizeof(out); XMEMSET(out, 0, sizeof(out)); - if (wc_ed25519_sign_hash(msgs[i], msgSz[i], out, &outlen, &key2) - != 0) + if (wc_ed25519_sign_msg(msgs[i], msgSz[i], out, &outlen, &key2) != 0) return -1030; - if (wc_ed25519_verify_hash(out, outlen, msgs[i], msgSz[i], &verify, - &key2) != 0 || verify != 1) + if (wc_ed25519_verify_msg(out, outlen, msgs[i], msgSz[i], &verify, + &key2) != 0 || verify != 1) return -1031; if (XMEMCMP(out, sigs[i], 64)) diff --git a/wolfssl/wolfcrypt/ed25519.h b/wolfssl/wolfcrypt/ed25519.h index 4446ae8e82d..6f9a1998957 100644 --- a/wolfssl/wolfcrypt/ed25519.h +++ b/wolfssl/wolfcrypt/ed25519.h @@ -60,11 +60,11 @@ typedef struct { WOLFSSL_API int wc_ed25519_make_key(RNG* rng, int keysize, ed25519_key* key); WOLFSSL_API -int wc_ed25519_sign_hash(const byte* in, word32 inlen, byte* out, - word32 *outlen, ed25519_key* key); +int wc_ed25519_sign_msg(const byte* in, word32 inlen, byte* out, + word32 *outlen, ed25519_key* key); WOLFSSL_API -int wc_ed25519_verify_hash(byte* sig, word32 siglen, const byte* hash, - word32 hashlen, int* stat, ed25519_key* key); +int wc_ed25519_verify_msg(byte* sig, word32 siglen, const byte* msg, + word32 msglen, int* stat, ed25519_key* key); WOLFSSL_API int wc_ed25519_init(ed25519_key* key); WOLFSSL_API