SHA-256 APIs

Type declarations and APIs for the SHA-256 algorithm. More...

Macros
#define	ocrypto_sha256_BYTES   (32)

Functions
void	ocrypto_sha256 (uint8_t r[(32)], const uint8_t *in, size_t in_len)

Incremental SHA-256 generator.
This group of functions can be used to incrementally compute the SHA-256 hash for a given message.
void	ocrypto_sha256_init (ocrypto_sha256_ctx *ctx)
void	ocrypto_sha256_update (ocrypto_sha256_ctx *ctx, const uint8_t *in, size_t in_len)
void	ocrypto_sha256_final (ocrypto_sha256_ctx *ctx, uint8_t r[(32)])

Detailed Description

Type declarations and APIs for the SHA-256 algorithm.

SHA-256 is part of the SHA-2 family that is a set of cryptographic hash functions designed by the NSA. It is the successor of the SHA-1 algorithm.

A fixed-sized message digest is computed from variable length input data. The function is practically impossible to revert, and small changes in the input message lead to major changes in the message digest.