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sha: reduce sha256/512 context size. Make sha1/sha256 code more similar

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function                                             old     new   delta
sha512_end                                           182     204     +22
sha256_end                                           137     147     +10
sha1_hash                                            113     108      -5
sha1_end                                             143     129     -14
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/2 up/down: 32/-19)             Total: 13 bytes
This commit is contained in:
Denis Vlasenko
2009-03-12 19:06:18 +00:00
parent 4a43057268
commit c8329c9568
2 changed files with 77 additions and 70 deletions
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6
include/libbb.h
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@@ -1322,7 +1322,7 @@ void bb_uuencode(char *store, const void *s, int length, const char *tbl) FAST_F
typedef struct sha1_ctx_t {
uint64_t total64;
uint32_t wbuffer[16]; /* NB: always correctly aligned for uint64_t */
uint8_t wbuffer[64]; /* NB: always correctly aligned for uint64_t */
uint32_t hash[5];
} sha1_ctx_t;
void sha1_begin(sha1_ctx_t *ctx) FAST_FUNC;
@@ -1331,7 +1331,7 @@ void sha1_end(void *resbuf, sha1_ctx_t *ctx) FAST_FUNC;
typedef struct sha256_ctx_t {
uint64_t total64;
uint32_t hash[8];
char wbuffer[64*2]; /* NB: always correctly aligned for uint64_t */
uint8_t wbuffer[64]; /* NB: always correctly aligned for uint64_t */
} sha256_ctx_t;
void sha256_begin(sha256_ctx_t *ctx) FAST_FUNC;
void sha256_hash(const void *buffer, size_t len, sha256_ctx_t *ctx) FAST_FUNC;
@@ -1339,7 +1339,7 @@ void sha256_end(void *resbuf, sha256_ctx_t *ctx) FAST_FUNC;
typedef struct sha512_ctx_t {
uint64_t total64[2];
uint64_t hash[8];
char wbuffer[128*2]; /* NB: always correctly aligned for uint64_t */
uint8_t wbuffer[128]; /* NB: always correctly aligned for uint64_t */
} sha512_ctx_t;
void sha512_begin(sha512_ctx_t *ctx) FAST_FUNC;
void sha512_hash(const void *buffer, size_t len, sha512_ctx_t *ctx) FAST_FUNC;