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implement WC_C_DYNAMIC_FALLBACK for SHA-3.

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This commit is contained in:
Daniel Pouzzner
2024-04-27 01:04:04 -05:00
parent 4184b0e4f3
commit 3f8e33369c
3 changed files with 53 additions and 21 deletions
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65
wolfcrypt/src/sha3.c
View File

@ -66,9 +66,16 @@
word32 cpuid_flags;
int cpuid_flags_set = 0;
#ifdef WC_C_DYNAMIC_FALLBACK
#define SHA3_BLOCK (sha3->sha3_block)
#define SHA3_BLOCK_N (sha3->sha3_block_n)
#else
void (*sha3_block)(word64 *s) = NULL;
void (*sha3_block_n)(word64 *s, const byte* data, word32 n,
word64 c) = NULL;
#define SHA3_BLOCK sha3_block
#define SHA3_BLOCK_N sha3_block_n
#endif
#endif
#ifdef WOLFSSL_SHA3_SMALL
@ -622,15 +629,26 @@ static int InitSha3(wc_Sha3* sha3)
if (!cpuid_flags_set) {
cpuid_flags = cpuid_get_flags();
cpuid_flags_set = 1;
#ifdef WC_C_DYNAMIC_FALLBACK
}
{
if (! CAN_SAVE_VECTOR_REGISTERS()) {
SHA3_BLOCK = BlockSha3;
SHA3_BLOCK_N = NULL;
}
else
#endif
if (IS_INTEL_BMI1(cpuid_flags) && IS_INTEL_BMI2(cpuid_flags)) {
sha3_block = sha3_block_bmi2;
sha3_block_n = sha3_block_n_bmi2;
SHA3_BLOCK = sha3_block_bmi2;
SHA3_BLOCK_N = sha3_block_n_bmi2;
}
else if (IS_INTEL_AVX2(cpuid_flags)) {
sha3_block = sha3_block_avx2;
SHA3_BLOCK = sha3_block_avx2;
SHA3_BLOCK_N = NULL;
}
else {
sha3_block = BlockSha3;
SHA3_BLOCK = BlockSha3;
SHA3_BLOCK_N = NULL;
}
}
#endif
@ -652,7 +670,7 @@ static int Sha3Update(wc_Sha3* sha3, const byte* data, word32 len, byte p)
word32 blocks;
#if defined(WOLFSSL_LINUXKM) && defined(USE_INTEL_SPEEDUP)
if (sha3_block == sha3_block_avx2)
if (SHA3_BLOCK == sha3_block_avx2)
SAVE_VECTOR_REGISTERS(return _svr_ret;);
#endif
if (sha3->i > 0) {
@ -675,7 +693,7 @@ static int Sha3Update(wc_Sha3* sha3, const byte* data, word32 len, byte p)
sha3->s[i] ^= Load64BitBigEndian(sha3->t + 8 * i);
}
#ifdef USE_INTEL_SPEEDUP
(*sha3_block)(sha3->s);
(*SHA3_BLOCK)(sha3->s);
#else
BlockSha3(sha3->s);
#endif
@ -684,8 +702,8 @@ static int Sha3Update(wc_Sha3* sha3, const byte* data, word32 len, byte p)
}
blocks = len / (p * 8);
#ifdef USE_INTEL_SPEEDUP
if ((sha3_block_n != NULL) && (blocks > 0)) {
(*sha3_block_n)(sha3->s, data, blocks, p * 8);
if ((SHA3_BLOCK_N != NULL) && (blocks > 0)) {
(*SHA3_BLOCK_N)(sha3->s, data, blocks, p * 8);
len -= blocks * (p * 8);
data += blocks * (p * 8);
blocks = 0;
@ -696,7 +714,7 @@ static int Sha3Update(wc_Sha3* sha3, const byte* data, word32 len, byte p)
sha3->s[i] ^= Load64Unaligned(data + 8 * i);
}
#ifdef USE_INTEL_SPEEDUP
(*sha3_block)(sha3->s);
(*SHA3_BLOCK)(sha3->s);
#else
BlockSha3(sha3->s);
#endif
@ -704,7 +722,7 @@ static int Sha3Update(wc_Sha3* sha3, const byte* data, word32 len, byte p)
data += p * 8;
}
#if defined(WOLFSSL_LINUXKM) && defined(USE_INTEL_SPEEDUP)
if (sha3_block == sha3_block_avx2)
if (SHA3_BLOCK == sha3_block_avx2)
RESTORE_VECTOR_REGISTERS();
#endif
XMEMCPY(sha3->t, data, len);
@ -742,13 +760,13 @@ static int Sha3Final(wc_Sha3* sha3, byte padChar, byte* hash, byte p, word32 l)
}
#if defined(WOLFSSL_LINUXKM) && defined(USE_INTEL_SPEEDUP)
if (sha3_block == sha3_block_avx2)
if (SHA3_BLOCK == sha3_block_avx2)
SAVE_VECTOR_REGISTERS(return _svr_ret;);
#endif
for (j = 0; l - j >= rate; j += rate) {
#ifdef USE_INTEL_SPEEDUP
(*sha3_block)(sha3->s);
(*SHA3_BLOCK)(sha3->s);
#else
BlockSha3(sha3->s);
#endif
@ -760,7 +778,7 @@ static int Sha3Final(wc_Sha3* sha3, byte padChar, byte* hash, byte p, word32 l)
}
if (j != l) {
#ifdef USE_INTEL_SPEEDUP
(*sha3_block)(sha3->s);
(*SHA3_BLOCK)(sha3->s);
#else
BlockSha3(sha3->s);
#endif
@ -770,7 +788,7 @@ static int Sha3Final(wc_Sha3* sha3, byte padChar, byte* hash, byte p, word32 l)
XMEMCPY(hash + j, sha3->s, l - j);
}
#if defined(WOLFSSL_LINUXKM) && defined(USE_INTEL_SPEEDUP)
if (sha3_block == sha3_block_avx2)
if (SHA3_BLOCK == sha3_block_avx2)
RESTORE_VECTOR_REGISTERS();
#endif
@ -1338,6 +1356,13 @@ int wc_Shake128_Absorb(wc_Shake* shake, const byte* data, word32 len)
return ret;
}
#ifdef WC_C_DYNAMIC_FALLBACK
#undef SHA3_BLOCK
#undef SHA3_BLOCK_N
#define SHA3_BLOCK (shake->sha3_block)
#define SHA3_BLOCK_N (shake->sha3_block_n)
#endif
/* Squeeze the state to produce pseudo-random output.
*
* shake wc_Shake object holding state.
@ -1348,12 +1373,12 @@ int wc_Shake128_Absorb(wc_Shake* shake, const byte* data, word32 len)
int wc_Shake128_SqueezeBlocks(wc_Shake* shake, byte* out, word32 blockCnt)
{
#if defined(WOLFSSL_LINUXKM) && defined(USE_INTEL_SPEEDUP)
if (sha3_block == sha3_block_avx2)
if (SHA3_BLOCK == sha3_block_avx2)
SAVE_VECTOR_REGISTERS(return _svr_ret;);
#endif
for (; (blockCnt > 0); blockCnt--) {
#ifdef USE_INTEL_SPEEDUP
(*sha3_block)(shake->s);
(*SHA3_BLOCK)(shake->s);
#else
BlockSha3(shake->s);
#endif
@ -1365,7 +1390,7 @@ int wc_Shake128_SqueezeBlocks(wc_Shake* shake, byte* out, word32 blockCnt)
out += WC_SHA3_128_COUNT * 8;
}
#if defined(WOLFSSL_LINUXKM) && defined(USE_INTEL_SPEEDUP)
if (sha3_block == sha3_block_avx2)
if (SHA3_BLOCK == sha3_block_avx2)
RESTORE_VECTOR_REGISTERS();
#endif
@ -1486,12 +1511,12 @@ int wc_Shake256_Absorb(wc_Shake* shake, const byte* data, word32 len)
int wc_Shake256_SqueezeBlocks(wc_Shake* shake, byte* out, word32 blockCnt)
{
#if defined(WOLFSSL_LINUXKM) && defined(USE_INTEL_SPEEDUP)
if (sha3_block == sha3_block_avx2)
if (SHA3_BLOCK == sha3_block_avx2)
SAVE_VECTOR_REGISTERS(return _svr_ret;);
#endif
for (; (blockCnt > 0); blockCnt--) {
#ifdef USE_INTEL_SPEEDUP
(*sha3_block)(shake->s);
(*SHA3_BLOCK)(shake->s);
#else
BlockSha3(shake->s);
#endif
@ -1503,7 +1528,7 @@ int wc_Shake256_SqueezeBlocks(wc_Shake* shake, byte* out, word32 blockCnt)
out += WC_SHA3_256_COUNT * 8;
}
#if defined(WOLFSSL_LINUXKM) && defined(USE_INTEL_SPEEDUP)
if (sha3_block == sha3_block_avx2)
if (SHA3_BLOCK == sha3_block_avx2)
RESTORE_VECTOR_REGISTERS();
#endif

3
wolfssl/openssl/sha3.h
View File

@ -27,6 +27,7 @@
#include <wolfssl/wolfcrypt/settings.h>
#include <wolfssl/wolfcrypt/types.h>
#include <wolfssl/wolfcrypt/sha3.h>
#ifdef WOLFSSL_PREFIX
#include "prefix_sha.h"
@ -41,7 +42,7 @@
* to Sha3 is expected to also be 16 byte aligned addresses. */
struct WOLFSSL_SHA3_CTX {
/* big enough to hold wolfcrypt Sha3, but check on init */
ALIGN16 void* holder[(424 + WC_ASYNC_DEV_SIZE) / sizeof(void*)];
ALIGN16 void* holder[sizeof(struct wc_Sha3)];
};
#ifndef WOLFSSL_NOSHA3_224

6
wolfssl/wolfcrypt/sha3.h
View File

@ -124,6 +124,12 @@ struct wc_Sha3 {
void* heap;
#ifdef WC_C_DYNAMIC_FALLBACK
void (*sha3_block)(word64 *s);
void (*sha3_block_n)(word64 *s, const byte* data, word32 n,
word64 c);
#endif
#ifdef WOLFSSL_ASYNC_CRYPT
WC_ASYNC_DEV asyncDev;
#endif /* WOLFSSL_ASYNC_CRYPT */