diff options
| -rw-r--r-- | libavutil/sha1.c | 7 | ||||
| -rw-r--r-- | libavutil/sha1.h | 20 |
2 files changed, 24 insertions, 3 deletions
diff --git a/libavutil/sha1.c b/libavutil/sha1.c index f3e45deb91..fbff52a17b 100644 --- a/libavutil/sha1.c +++ b/libavutil/sha1.c @@ -23,10 +23,11 @@ #include "bswap.h" #include "sha1.h" +/** hash context */ typedef struct AVSHA1 { - uint64_t count; - uint8_t buffer[64]; - uint32_t state[5]; + 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[5]; ///< current hash value } AVSHA1; const int av_sha1_size = sizeof(AVSHA1); diff --git a/libavutil/sha1.h b/libavutil/sha1.h index 0f14ca8960..b9a43cdd39 100644 --- a/libavutil/sha1.h +++ b/libavutil/sha1.h @@ -27,8 +27,28 @@ extern const int av_sha1_size; struct AVSHA1; +/** + * Initializes SHA-1 hashing. + * + * @param context pointer to the function context (of size av_sha_size) + */ void av_sha1_init(struct AVSHA1* context); + +/** + * Updates hash value. + * + * @param context hash function context + * @param data input data to update hash with + * @param len input data length + */ void av_sha1_update(struct AVSHA1* context, const uint8_t* data, unsigned int len); + +/** + * Finishes hashing and output digest value. + * + * @param context hash function context + * @param digest buffer where output digest value is stored + */ void av_sha1_final(struct AVSHA1* context, uint8_t digest[20]); #endif /* AVUTIL_SHA1_H */ |