diff options
Diffstat (limited to 'libavutil')
| -rw-r--r-- | libavutil/sha1.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/libavutil/sha1.c b/libavutil/sha1.c index 80dbc312b9..081721222b 100644 --- a/libavutil/sha1.c +++ b/libavutil/sha1.c @@ -29,6 +29,8 @@ typedef struct AVSHA1 { uint64_t count; ///< number of bytes in buffer uint8_t buffer[64]; ///< 512-bit buffer of input values used in hash updating uint32_t state[8]; ///< current hash value + /** function used to update hash for 512-bit input block */ + void (*transform)(uint32_t *state, const uint8_t buffer[64]); } AVSHA1; const int av_sha1_size = sizeof(AVSHA1); @@ -132,6 +134,7 @@ void av_sha1_init(AVSHA1* ctx) ctx->state[2] = 0x98BADCFE; ctx->state[3] = 0x10325476; ctx->state[4] = 0xC3D2E1F0; + ctx->transform = transform; ctx->count = 0; } @@ -145,16 +148,16 @@ void av_sha1_update(AVSHA1* ctx, const uint8_t* data, unsigned int len) for (i = 0; i < len; i++) { ctx->buffer[j++] = data[i]; if (64 == j) { - transform(ctx->state, ctx->buffer); + ctx->transform(ctx->state, ctx->buffer); j = 0; } } #else if ((j + len) > 63) { memcpy(&ctx->buffer[j], data, (i = 64 - j)); - transform(ctx->state, ctx->buffer); + ctx->transform(ctx->state, ctx->buffer); for (; i + 63 < len; i += 64) - transform(ctx->state, &data[i]); + ctx->transform(ctx->state, &data[i]); j = 0; } else i = 0; |