From ec7381fbf6f77cc465eb06a1ab6f8a99df1e487c Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Wed, 5 Dec 2012 14:46:34 +0000 Subject: sha256: Use const where possible and add watchdog function In preparation for making the hash function common, we may as well use const where we can. Also add a watchdog version of the hashing function. Signed-off-by: Simon Glass --- include/sha256.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'include/sha256.h') diff --git a/include/sha256.h b/include/sha256.h index e38ea89..beadab3 100644 --- a/include/sha256.h +++ b/include/sha256.h @@ -3,6 +3,9 @@ #define SHA256_SUM_LEN 32 +/* Reset watchdog each time we process this many bytes */ +#define CHUNKSZ_SHA256 (64 * 1024) + typedef struct { uint32_t total[2]; uint32_t state[8]; @@ -10,7 +13,10 @@ typedef struct { } sha256_context; void sha256_starts(sha256_context * ctx); -void sha256_update(sha256_context * ctx, uint8_t * input, uint32_t length); +void sha256_update(sha256_context *ctx, const uint8_t *input, uint32_t length); void sha256_finish(sha256_context * ctx, uint8_t digest[SHA256_SUM_LEN]); +void sha256_csum_wd(const unsigned char *input, unsigned int ilen, + unsigned char *output, unsigned int chunk_sz); + #endif /* _SHA256_H */ -- cgit v1.1