1 #ifndef _SHA256_H 2 #define _SHA256_H 3 4 #define SHA256_SUM_LEN 32 5 6 /* Reset watchdog each time we process this many bytes */ 7 #define CHUNKSZ_SHA256 (64 * 1024) 8 9 typedef struct { 10 uint32_t total[2]; 11 uint32_t state[8]; 12 uint8_t buffer[64]; 13 } sha256_context; 14 15 void sha256_starts(sha256_context * ctx); 16 void sha256_update(sha256_context *ctx, const uint8_t *input, uint32_t length); 17 void sha256_finish(sha256_context * ctx, uint8_t digest[SHA256_SUM_LEN]); 18 19 void sha256_csum_wd(const unsigned char *input, unsigned int ilen, 20 unsigned char *output, unsigned int chunk_sz); 21 22 #endif /* _SHA256_H */ 23