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ascon: added forced permutation unroll

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This commit is contained in:
Juliusz Sosinowicz
2024-12-23 18:04:24 +01:00
parent 0e7bee9577
commit e4100d977c
2 changed files with 64 additions and 0 deletions
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1
.github/workflows/os-check.yml vendored
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@@ -41,6 +41,7 @@ jobs:
'--enable-dtls --enable-dtlscid --enable-dtls13 --enable-secure-renegotiation
--enable-psk --enable-aesccm --enable-nullcipher CPPFLAGS=-DWOLFSSL_STATIC_RSA',
'--enable-ascon',
'--enable-ascon CPPFLAGS=-DWOLFSSL_ASCON_UNROLL',
]
name: make check
if: github.repository_owner == 'wolfssl'

63
wolfcrypt/src/ascon.c
View File

@@ -50,6 +50,8 @@
#define MAX_ROUNDS 12
#ifndef WOLFSSL_ASCON_UNROLL
/* Table 4 */
static const byte round_constants[MAX_ROUNDS] = {
0xf0, 0xe1, 0xd2, 0xc3, 0xb4, 0xa5, 0x96, 0x87, 0x78, 0x69, 0x5a, 0x4b
@@ -110,6 +112,67 @@ static void permutation(AsconState* a, byte rounds)
}
}
#else
#define p(a, c) do { \
AsconState tmp; \
/* 2.6.1 Addition of Constants */ \
(a)->s64[2] ^= c; \
/* 2.6.2 Substitution Layer */ \
(a)->s64[0] ^= (a)->s64[4]; \
(a)->s64[4] ^= (a)->s64[3]; \
(a)->s64[2] ^= (a)->s64[1]; \
tmp.s64[0] = (a)->s64[0] ^ (~(a)->s64[1] & (a)->s64[2]); \
tmp.s64[2] = (a)->s64[2] ^ (~(a)->s64[3] & (a)->s64[4]); \
tmp.s64[4] = (a)->s64[4] ^ (~(a)->s64[0] & (a)->s64[1]); \
tmp.s64[1] = (a)->s64[1] ^ (~(a)->s64[2] & (a)->s64[3]); \
tmp.s64[3] = (a)->s64[3] ^ (~(a)->s64[4] & (a)->s64[0]); \
tmp.s64[1] ^= tmp.s64[0]; \
tmp.s64[3] ^= tmp.s64[2]; \
tmp.s64[0] ^= tmp.s64[4]; \
tmp.s64[2] = ~tmp.s64[2]; \
/* 2.6.3 Linear Diffusion Layer */ \
(a)->s64[4] = \
tmp.s64[4] ^ rotrFixed64(tmp.s64[4], 7) ^ rotrFixed64(tmp.s64[4], 41); \
(a)->s64[1] = \
tmp.s64[1] ^ rotrFixed64(tmp.s64[1], 61) ^ rotrFixed64(tmp.s64[1], 39); \
(a)->s64[3] = \
tmp.s64[3] ^ rotrFixed64(tmp.s64[3], 10) ^ rotrFixed64(tmp.s64[3], 17); \
(a)->s64[0] = \
tmp.s64[0] ^ rotrFixed64(tmp.s64[0], 19) ^ rotrFixed64(tmp.s64[0], 28); \
(a)->s64[2] = \
tmp.s64[2] ^ rotrFixed64(tmp.s64[2], 1) ^ rotrFixed64(tmp.s64[2], 6); \
} while (0)
#define p6(a) \
p(a, 0x96); \
p(a, 0x87); \
p(a, 0x78); \
p(a, 0x69); \
p(a, 0x5a); \
p(a, 0x4b)
#define p8(a) \
p(a, 0xb4); \
p(a, 0xa5); \
p6(a)
#define p12(a) \
p(a, 0xf0); \
p(a, 0xe1); \
p(a, 0xd2); \
p(a, 0xc3); \
p8(a)
/* Needed layer to evaluate the macro values */
#define _permutation(a, rounds) \
p ## rounds(a)
#define permutation(a, rounds) \
_permutation(a, rounds)
#endif
/* AsconHash API */
wc_AsconHash256* wc_AsconHash256_New(void)