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sm3_rv32_cf.c
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sm3_rv32_cf.c
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// sm3_rv32_cf.c
// 2020-03-10 Markku-Juhani O. Saarinen <mjos@pqshield.com>
// Copyright (c) 2020, PQShield Ltd. All rights reserved.
// The Chinese Standard SM3 Hash Function
// GB/T 32905-2016, GM/T 0004-2012, ISO/IEC 10118-3:2018
#include "sm3_wrap.h"
// bitmanip (emulation) prototypes here
#include "bitmanip.h"
// 4.4 Permutations (defined with left shifts)
uint32_t sm3_p0(uint32_t rs1)
{
return rs1 ^ rv32b_ror(rs1, 15) ^ rv32b_ror(rs1, 23);
}
uint32_t sm3_p1(uint32_t rs1)
{
return rs1 ^ rv32b_ror(rs1, 9) ^ rv32b_ror(rs1, 17);
}
// key schedule
#define SM3KEY(w0, w3, w7, wa, wd) { \
t = w0 ^ w7 ^ rv32b_ror(wd, 17); \
t = sm3_p1(t); \
w0 = wa ^ rv32b_ror(w3, 25) ^ t; }
// rounds 0..15
#define SM3RF0(a, b, c, d, e, f, g, h, w0, w4) { \
h = h + w0; \
t = rv32b_ror(a, 20); \
u = t + e + tj; \
u = rv32b_ror(u, 25); \
d = d + (t ^ u) + (a ^ b ^ c); \
b = rv32b_ror(b, 23); \
h = h + u + (e ^ f ^ g); \
h = sm3_p0(h); \
f = rv32b_ror(f, 13); \
d = d + (w0 ^ w4); \
tj = rv32b_ror(tj, 31); }
// rounds 16..63
#define SM3RF1(a, b, c, d, e, f, g, h, w0, w4) { \
h = h + w0; \
t = rv32b_ror(a, 20); \
u = t + e + tj; \
u = rv32b_ror(u, 25); \
d = d + (t ^ u) + (((a | c) & b) | (a & c)); \
b = rv32b_ror(b, 23); \
h = h + u + ((e & f) ^ rv32b_andn(g, e)); \
h = sm3_p0(h); \
f = rv32b_ror(f, 13); \
d = d + (w0 ^ w4); \
tj = rv32b_ror(tj, 31); }
// compression function (this one does *not* modify mp[])
void rv32_sm3_compress(void *s)
{
int i;
uint32_t a, b, c, d, e, f, g, h;
uint32_t m0, m1, m2, m3, m4, m5, m6, m7, m8, m9, ma, mb, mc, md, me, mf;
uint32_t tj, t, u;
uint32_t *sp = s;
const uint32_t *mp = sp + 8;
a = sp[0];
b = sp[1];
c = sp[2];
d = sp[3];
e = sp[4];
f = sp[5];
g = sp[6];
h = sp[7];
// load with rev8.w
m0 = rv32b_grev(mp[0], 0x18);
m1 = rv32b_grev(mp[1], 0x18);
m2 = rv32b_grev(mp[2], 0x18);
m3 = rv32b_grev(mp[3], 0x18);
m4 = rv32b_grev(mp[4], 0x18);
m5 = rv32b_grev(mp[5], 0x18);
m6 = rv32b_grev(mp[6], 0x18);
m7 = rv32b_grev(mp[7], 0x18);
m8 = rv32b_grev(mp[8], 0x18);
m9 = rv32b_grev(mp[9], 0x18);
ma = rv32b_grev(mp[10], 0x18);
mb = rv32b_grev(mp[11], 0x18);
mc = rv32b_grev(mp[12], 0x18);
md = rv32b_grev(mp[13], 0x18);
me = rv32b_grev(mp[14], 0x18);
mf = rv32b_grev(mp[15], 0x18);
tj = 0x79CC4519;
SM3RF0(a, b, c, d, e, f, g, h, m0, m4);
SM3RF0(d, a, b, c, h, e, f, g, m1, m5);
SM3RF0(c, d, a, b, g, h, e, f, m2, m6);
SM3RF0(b, c, d, a, f, g, h, e, m3, m7);
SM3RF0(a, b, c, d, e, f, g, h, m4, m8);
SM3RF0(d, a, b, c, h, e, f, g, m5, m9);
SM3RF0(c, d, a, b, g, h, e, f, m6, ma);
SM3RF0(b, c, d, a, f, g, h, e, m7, mb);
SM3RF0(a, b, c, d, e, f, g, h, m8, mc);
SM3RF0(d, a, b, c, h, e, f, g, m9, md);
SM3RF0(c, d, a, b, g, h, e, f, ma, me);
SM3RF0(b, c, d, a, f, g, h, e, mb, mf);
SM3KEY(m0, m3, m7, ma, md);
SM3KEY(m1, m4, m8, mb, me);
SM3KEY(m2, m5, m9, mc, mf);
SM3KEY(m3, m6, ma, md, m0);
SM3RF0(a, b, c, d, e, f, g, h, mc, m0);
SM3RF0(d, a, b, c, h, e, f, g, md, m1);
SM3RF0(c, d, a, b, g, h, e, f, me, m2);
SM3RF0(b, c, d, a, f, g, h, e, mf, m3);
tj = 0x9D8A7A87;
for (i = 0; i < 3; i++) {
SM3KEY(m4, m7, mb, me, m1);
SM3KEY(m5, m8, mc, mf, m2);
SM3KEY(m6, m9, md, m0, m3);
SM3KEY(m7, ma, me, m1, m4);
SM3KEY(m8, mb, mf, m2, m5);
SM3KEY(m9, mc, m0, m3, m6);
SM3KEY(ma, md, m1, m4, m7);
SM3KEY(mb, me, m2, m5, m8);
SM3KEY(mc, mf, m3, m6, m9);
SM3KEY(md, m0, m4, m7, ma);
SM3KEY(me, m1, m5, m8, mb);
SM3KEY(mf, m2, m6, m9, mc);
SM3RF1(a, b, c, d, e, f, g, h, m0, m4);
SM3RF1(d, a, b, c, h, e, f, g, m1, m5);
SM3RF1(c, d, a, b, g, h, e, f, m2, m6);
SM3RF1(b, c, d, a, f, g, h, e, m3, m7);
SM3RF1(a, b, c, d, e, f, g, h, m4, m8);
SM3RF1(d, a, b, c, h, e, f, g, m5, m9);
SM3RF1(c, d, a, b, g, h, e, f, m6, ma);
SM3RF1(b, c, d, a, f, g, h, e, m7, mb);
SM3RF1(a, b, c, d, e, f, g, h, m8, mc);
SM3RF1(d, a, b, c, h, e, f, g, m9, md);
SM3RF1(c, d, a, b, g, h, e, f, ma, me);
SM3RF1(b, c, d, a, f, g, h, e, mb, mf);
SM3KEY(m0, m3, m7, ma, md);
SM3KEY(m1, m4, m8, mb, me);
SM3KEY(m2, m5, m9, mc, mf);
SM3KEY(m3, m6, ma, md, m0);
SM3RF1(a, b, c, d, e, f, g, h, mc, m0);
SM3RF1(d, a, b, c, h, e, f, g, md, m1);
SM3RF1(c, d, a, b, g, h, e, f, me, m2);
SM3RF1(b, c, d, a, f, g, h, e, mf, m3);
}
sp[0] = sp[0] ^ a;
sp[1] = sp[1] ^ b;
sp[2] = sp[2] ^ c;
sp[3] = sp[3] ^ d;
sp[4] = sp[4] ^ e;
sp[5] = sp[5] ^ f;
sp[6] = sp[6] ^ g;
sp[7] = sp[7] ^ h;
}