Add SHA512

lib/hcrypto/sha512.c

@@ -0,0 +1,244 @@
+/*
+ * Copyright (c) 2006 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "config.h"
+
+#include "hash.h"
+#include "sha.h"
+
+#define Ch(x,y,z) (((x) & (y)) ^ ((~(x)) & (z)))
+#define Maj(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
+
+#define ROTR(x,n)   (((x)>>(n)) | ((x) << (64 - (n))))
+
+#define Sigma0(x)	(ROTR(x,28) ^ ROTR(x,34) ^ ROTR(x,39))
+#define Sigma1(x)	(ROTR(x,14) ^ ROTR(x,18) ^ ROTR(x,41))
+#define sigma0(x)	(ROTR(x,1)  ^ ROTR(x,8)  ^ ((x)>>7))
+#define sigma1(x)	(ROTR(x,19) ^ ROTR(x,61) ^ ((x)>>6))
+
+#define A m->counter[0]
+#define B m->counter[1]
+#define C m->counter[2]
+#define D m->counter[3]
+#define E m->counter[4]
+#define F m->counter[5]
+#define G m->counter[6]
+#define H m->counter[7]
+
+static const uint64_t constant_512[80] = {
+    0x428a2f98d728ae22, 0x7137449123ef65cd, 0xb5c0fbcfec4d3b2f, 0xe9b5dba58189dbbc,
+    0x3956c25bf348b538, 0x59f111f1b605d019, 0x923f82a4af194f9b, 0xab1c5ed5da6d8118,
+    0xd807aa98a3030242, 0x12835b0145706fbe, 0x243185be4ee4b28c, 0x550c7dc3d5ffb4e2,
+    0x72be5d74f27b896f, 0x80deb1fe3b1696b1, 0x9bdc06a725c71235, 0xc19bf174cf692694,
+    0xe49b69c19ef14ad2, 0xefbe4786384f25e3, 0x0fc19dc68b8cd5b5, 0x240ca1cc77ac9c65,
+    0x2de92c6f592b0275, 0x4a7484aa6ea6e483, 0x5cb0a9dcbd41fbd4, 0x76f988da831153b5,
+    0x983e5152ee66dfab, 0xa831c66d2db43210, 0xb00327c898fb213f, 0xbf597fc7beef0ee4,
+    0xc6e00bf33da88fc2, 0xd5a79147930aa725, 0x06ca6351e003826f, 0x142929670a0e6e70,
+    0x27b70a8546d22ffc, 0x2e1b21385c26c926, 0x4d2c6dfc5ac42aed, 0x53380d139d95b3df,
+    0x650a73548baf63de, 0x766a0abb3c77b2a8, 0x81c2c92e47edaee6, 0x92722c851482353b,
+    0xa2bfe8a14cf10364, 0xa81a664bbc423001, 0xc24b8b70d0f89791, 0xc76c51a30654be30,
+    0xd192e819d6ef5218, 0xd69906245565a910, 0xf40e35855771202a, 0x106aa07032bbd1b8,
+    0x19a4c116b8d2d0c8, 0x1e376c085141ab53, 0x2748774cdf8eeb99, 0x34b0bcb5e19b48a8,
+    0x391c0cb3c5c95a63, 0x4ed8aa4ae3418acb, 0x5b9cca4f7763e373, 0x682e6ff3d6b2b8a3,
+    0x748f82ee5defb2fc, 0x78a5636f43172f60, 0x84c87814a1f0ab72, 0x8cc702081a6439ec,
+    0x90befffa23631e28, 0xa4506cebde82bde9, 0xbef9a3f7b2c67915, 0xc67178f2e372532b,
+    0xca273eceea26619c, 0xd186b8c721c0c207, 0xeada7dd6cde0eb1e, 0xf57d4f7fee6ed178,
+    0x06f067aa72176fba, 0x0a637dc5a2c898a6, 0x113f9804bef90dae, 0x1b710b35131c471b,
+    0x28db77f523047d84, 0x32caab7b40c72493, 0x3c9ebe0a15c9bebc, 0x431d67c49c100d4c,
+    0x4cc5d4becb3e42b6, 0x597f299cfc657e2a, 0x5fcb6fab3ad6faec, 0x6c44198c4a475817
+};
+
+void
+SHA512_Init (SHA512_CTX *m)
+{
+    m->sz[0] = 0;
+    m->sz[1] = 0;
+    A = 0x6a09e667f3bcc908;
+    B = 0xbb67ae8584caa73b;
+    C = 0x3c6ef372fe94f82b;
+    D = 0xa54ff53a5f1d36f1;
+    E = 0x510e527fade682d1;
+    F = 0x9b05688c2b3e6c1f;
+    G = 0x1f83d9abfb41bd6b;
+    H = 0x5be0cd19137e2179;
+}
+
+static void
+calc (SHA512_CTX *m, uint64_t *in)
+{
+    uint64_t AA, BB, CC, DD, EE, FF, GG, HH;
+    uint64_t data[80];
+    int i;
+
+    AA = A;
+    BB = B;
+    CC = C;
+    DD = D;
+    EE = E;
+    FF = F;
+    GG = G;
+    HH = H;
+
+    for (i = 0; i < 16; ++i)
+	data[i] = in[i];
+    for (i = 16; i < 80; ++i)
+	data[i] = sigma1(data[i-2]) + data[i-7] +
+	    sigma0(data[i-15]) + data[i - 16];
+
+    for (i = 0; i < 80; i++) {
+	uint64_t T1, T2;
+
+	T1 = HH + Sigma1(EE) + Ch(EE, FF, GG) + constant_512[i] + data[i];
+	T2 = Sigma0(AA) + Maj(AA,BB,CC);
+
+	HH = GG;
+	GG = FF;
+	FF = EE;
+	EE = DD + T1;
+	DD = CC;
+	CC = BB;
+	BB = AA;
+	AA = T1 + T2;
+    }
+
+    A += AA;
+    B += BB;
+    C += CC;
+    D += DD;
+    E += EE;
+    F += FF;
+    G += GG;
+    H += HH;
+}
+
+/*
+ * From `Performance analysis of MD5' by Joseph D. Touch <touch@isi.edu>
+ */
+
+#if !defined(WORDS_BIGENDIAN) || defined(_CRAY)
+static inline uint64_t
+swap_uint64_t (uint64_t t)
+{
+    uint64_t temp;
+
+    temp   = cshift64(t, 32);
+    temp = ((temp & 0xff00ff00ff00ff00) >> 8) |
+           ((temp & 0x00ff00ff00ff00ff) << 8);
+    return ((temp & 0xffff0000ffff0000) >> 16) |
+           ((temp & 0x0000ffff0000ffff) << 16);
+}
+#endif
+
+struct x64{
+    uint64_t a:64;
+    uint64_t b:64;
+};
+
+void
+SHA512_Update (SHA512_CTX *m, const void *v, size_t len)
+{
+    const unsigned char *p = v;
+    size_t old_sz = m->sz[0];
+    size_t offset;
+
+    m->sz[0] += len * 8;
+    if (m->sz[0] < old_sz)
+	++m->sz[1];
+    offset = (old_sz / 8) % 128;
+    while(len > 0){
+	size_t l = min(len, 128 - offset);
+	memcpy(m->save + offset, p, l);
+	offset += l;
+	p += l;
+	len -= l;
+	if(offset == 128){
+#if !defined(WORDS_BIGENDIAN) || defined(_CRAY)
+	    int i;
+	    uint64_t current[16];
+	    struct x64 *us = (struct x64*)m->save;
+	    for(i = 0; i < 8; i++){
+		current[2*i+0] = swap_uint64_t(us[i].a);
+		current[2*i+1] = swap_uint64_t(us[i].b);
+	    }
+	    calc(m, current);
+#else
+	    calc(m, (uint64_t*)m->save);
+#endif
+	    offset = 0;
+	}
+    }
+}
+
+void
+SHA512_Final (void *res, SHA512_CTX *m)
+{
+    unsigned char zeros[128 + 16];
+    unsigned offset = (m->sz[0] / 8) % 128;
+    unsigned int dstart = (240 - offset - 1) % 128 + 1;
+
+    *zeros = 0x80;
+    memset (zeros + 1, 0, sizeof(zeros) - 1);
+    zeros[dstart+15] = (m->sz[0] >> 0) & 0xff;
+    zeros[dstart+14] = (m->sz[0] >> 8) & 0xff;
+    zeros[dstart+13] = (m->sz[0] >> 16) & 0xff;
+    zeros[dstart+12] = (m->sz[0] >> 24) & 0xff;
+    zeros[dstart+11] = (m->sz[0] >> 32) & 0xff;
+    zeros[dstart+10] = (m->sz[0] >> 40) & 0xff;
+    zeros[dstart+9]  = (m->sz[0] >> 48) & 0xff;
+    zeros[dstart+8]  = (m->sz[0] >> 56) & 0xff;
+
+    zeros[dstart+7] = (m->sz[1] >> 0) & 0xff;
+    zeros[dstart+6] = (m->sz[1] >> 8) & 0xff;
+    zeros[dstart+5] = (m->sz[1] >> 16) & 0xff;
+    zeros[dstart+4] = (m->sz[1] >> 24) & 0xff;
+    zeros[dstart+3] = (m->sz[1] >> 32) & 0xff;
+    zeros[dstart+2] = (m->sz[1] >> 40) & 0xff;
+    zeros[dstart+1] = (m->sz[1] >> 48) & 0xff;
+    zeros[dstart+0] = (m->sz[1] >> 56) & 0xff;
+    SHA512_Update (m, zeros, dstart + 16);
+    {
+	int i;
+	unsigned char *r = (unsigned char*)res;
+
+	for (i = 0; i < 8; ++i) {
+	    r[8*i+7] = m->counter[i] & 0xFF;
+	    r[8*i+6] = (m->counter[i] >> 8) & 0xFF;
+	    r[8*i+5] = (m->counter[i] >> 16) & 0xFF;
+	    r[8*i+4] = (m->counter[i] >> 24) & 0xFF;
+	    r[8*i+3] = (m->counter[i] >> 32) & 0XFF;
+	    r[8*i+2] = (m->counter[i] >> 40) & 0xFF;
+	    r[8*i+1] = (m->counter[i] >> 48) & 0xFF;
+	    r[8*i]   = (m->counter[i] >> 56) & 0xFF;
+	}
+    }
+}