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libgcrypt-1.6.2/cipher/whirlpool.c

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/* Number of rounds. */ /* Number of rounds. */
#define R 10 #define R 10
/* USE_AMD64_ASM indicates whether to use AMD64 assembly code. */
#undef USE_AMD64_ASM
#if defined(__x86_64__) && defined(HAVE_COMPATIBLE_GCC_AMD64_PLATFORM_AS)
# define USE_AMD64_ASM 1
#endif
/* Types. */ /* Types. */
typedef u64 whirlpool_block_t[BLOCK_SIZE / 8]; typedef u64 whirlpool_block_t[BLOCK_SIZE / 8];
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U64_C (0xf8c7f8933fed6bf8), U64_C (0x86228644a411c286), U64_C (0xf8c7f8933fed6bf8), U64_C (0x86228644a411c286),
}; };
#ifdef USE_AMD64_ASM
/* Assembly implementation of Whirlpool */
extern void _gcry_whirlpool_transform_amd64
(unsigned char hash[BLOCK_SIZE], const unsigned char block[BLOCK_SIZE]);
static unsigned int
whirlpool_transform (void *ctx, const unsigned char *data)
{
whirlpool_context_t *context = ctx;
_gcry_whirlpool_transform_amd64 (context->hash_state, data);
return 4 * sizeof(void*);
}
#else /*!USE_AMD64_ASM*/
␌ ␌
/* /*
* Transform block. * Transform block.
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return /*burn_stack*/ 4 * sizeof(whirlpool_block_t) + 2 * sizeof(int) + return /*burn_stack*/ 4 * sizeof(whirlpool_block_t) + 2 * sizeof(int) +
4 * sizeof(void*); 4 * sizeof(void*);
} }
#endif /*!USE_AMD64_ASM*/
static void static void
whirlpool_init (void *ctx, unsigned int flags) whirlpool_init (void *ctx, unsigned int flags)
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context->bugemu.count += 32; context->bugemu.count += 32;
whirlpool_add_bugemu (context, NULL, 0); whirlpool_add_bugemu (context, NULL, 0);
#ifdef USE_AMD64_ASM
for (i = 0; i < 8; i++) \
buf_put_le64((context->bctx.buf) + i * 8, (context->hash_state)[i]);
#else
block_to_buffer (context->bctx.buf, context->hash_state, i); block_to_buffer (context->bctx.buf, context->hash_state, i);
#endif
} }
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context->bctx.count += 32; context->bctx.count += 32;
whirlpool_write (context, NULL, 0); whirlpool_write (context, NULL, 0);
#ifdef USE_AMD64_ASM
for (i = 0; i < 8; i++) \
buf_put_le64((context->bctx.buf) + i * 8, (context->hash_state)[i]);
#else
block_to_buffer (context->bctx.buf, context->hash_state, i); block_to_buffer (context->bctx.buf, context->hash_state, i);
#endif
} }
static byte * static byte *
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