emo/busybox
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shrink sha hashing a bit more (remove wbuflen field from ctx),

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remove the requirement for aligned buffer

function                                             old     new   delta
sha512_hash                                          262     297     +35
sha1_end                                             136     143      +7
passwd_main                                         1019    1023      +4
sha256_end                                           135     137      +2
count_lines                                           72      74      +2
sha256_hash                                          259     260      +1
popstring                                            164     158      -6
sha512_begin                                          88      81      -7
sha256_begin                                          44      37      -7
parse_expr                                           832     824      -8
bbunpack                                             446     438      -8
sha256_process_block64                               529     520      -9
md5_end                                              166     151     -15
evaltreenr                                           817     802     -15
evaltree                                             817     802     -15
sha512_end                                           204     182     -22
sha512_process_block128                             1444    1405     -39
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 6/11 up/down: 51/-151)         Total: -100 bytes
This commit is contained in:
Denis Vlasenko
2009-03-12 15:40:27 +00:00
parent 6a5d9faa29
commit cd2cd312b7
3 changed files with 113 additions and 136 deletions
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6
include/libbb.h
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@ -1329,18 +1329,16 @@ void sha1_begin(sha1_ctx_t *ctx) FAST_FUNC;
void sha1_hash(const void *data, size_t length, sha1_ctx_t *ctx) FAST_FUNC;
void sha1_end(void *resbuf, sha1_ctx_t *ctx) FAST_FUNC;
typedef struct sha256_ctx_t {
unsigned wbuflen;
uint32_t H[8];
uint64_t total64;
uint32_t hash[8];
char wbuffer[64*2]; /* 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;
void sha256_end(void *resbuf, sha256_ctx_t *ctx) FAST_FUNC;
typedef struct sha512_ctx_t {
unsigned wbuflen;
uint64_t H[8];
uint64_t total64[2];
uint64_t hash[8];
char wbuffer[128*2]; /* NB: always correctly aligned for uint64_t */
} sha512_ctx_t;
void sha512_begin(sha512_ctx_t *ctx) FAST_FUNC;