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sha: fix thinko in sha512; add FAST_FUNC to sha1/sha256

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function                                             old     new   delta
sha512_process_block128                             1334    1336      +2
sha1_hash                                            112     111      -1
sha256_process_block64                               446     440      -6
sha1_process_block64                                 494     484     -10
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/3 up/down: 2/-17)             Total: -15 bytes
This commit is contained in:
Denis Vlasenko 2009-03-15 02:56:00 +00:00
parent e9afc468fa
commit 8ec8d5e3db
2 changed files with 5 additions and 5 deletions
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2
include/libbb.h
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@ -1324,7 +1324,7 @@ typedef struct sha1_ctx_t {
uint32_t hash[8]; /* 5, +3 elements for sha256 */
uint64_t total64;
uint8_t wbuffer[64]; /* NB: always correctly aligned for uint64_t */
void (*process_block)(struct sha1_ctx_t*);
void (*process_block)(struct sha1_ctx_t*) FAST_FUNC;
} sha1_ctx_t;
void sha1_begin(sha1_ctx_t *ctx) FAST_FUNC;
void sha1_hash(const void *data, size_t length, sha1_ctx_t *ctx) FAST_FUNC;

8
libbb/sha1.c
View File

@ -56,7 +56,7 @@ static inline uint64_t hton64(uint64_t v)
#define SHA1_BLOCK_SIZE 64
#define SHA1_MASK (SHA1_BLOCK_SIZE - 1)
static void sha1_process_block64(sha1_ctx_t *ctx)
static void FAST_FUNC sha1_process_block64(sha1_ctx_t *ctx)
{
unsigned i;
uint32_t w[80], a, b, c, d, e, t;
@ -203,7 +203,7 @@ static const uint32_t K512_lo[80] = {
/* Process LEN bytes of BUFFER, accumulating context into CTX.
LEN is rounded _down_ to 64. */
static void sha256_process_block64(sha256_ctx_t *ctx)
static void FAST_FUNC sha256_process_block64(sha256_ctx_t *ctx)
{
unsigned t;
uint32_t W[64];
@ -266,7 +266,7 @@ static void sha256_process_block64(sha256_ctx_t *ctx)
}
/* Process LEN bytes of BUFFER, accumulating context into CTX.
LEN is rounded _down_ to 128. */
static void sha512_process_block128(sha512_ctx_t *ctx)
static void FAST_FUNC sha512_process_block128(sha512_ctx_t *ctx)
{
unsigned t;
uint64_t W[80];
@ -278,7 +278,7 @@ static void sha512_process_block128(sha512_ctx_t *ctx)
uint64_t f = ctx->hash[5];
uint64_t g = ctx->hash[6];
uint64_t h = ctx->hash[7];
const uint32_t *words = (uint32_t*) ctx->wbuffer;
const uint64_t *words = (uint64_t*) ctx->wbuffer;
/* Operators defined in FIPS 180-2:4.1.2. */
#define Ch(x, y, z) ((x & y) ^ (~x & z))