SHA3

SHA3 algorithms, with 224, 256, 384 and 512 bit outputs. More...

Files
file	ocrypto_sha3.h
	SHA3 algorithms, with 224, 256, 384 and 512 bit outputs.

Macros
#define	ocrypto_sha3_224_BYTES   (28)
#define	ocrypto_sha3_256_BYTES   (32)
#define	ocrypto_sha3_384_BYTES   (48)
#define	ocrypto_sha3_512_BYTES   (64)

Functions
void	ocrypto_sha3_224 (uint8_t r[(28)], const uint8_t *in, size_t in_len)
void	ocrypto_sha3_256 (uint8_t r[(32)], const uint8_t *in, size_t in_len)
void	ocrypto_sha3_384 (uint8_t r[(48)], const uint8_t *in, size_t in_len)
void	ocrypto_sha3_512 (uint8_t r[(64)], const uint8_t *in, size_t in_len)

Incremental SHA3 generator
This group of functions can be used to incrementally compute the SHA3 hash for a given message.
void	ocrypto_sha3_init (ocrypto_sha3_ctx *ctx)
void	ocrypto_sha3_224_update (ocrypto_sha3_ctx *ctx, const uint8_t *in, size_t in_len)
void	ocrypto_sha3_256_update (ocrypto_sha3_ctx *ctx, const uint8_t *in, size_t in_len)
void	ocrypto_sha3_384_update (ocrypto_sha3_ctx *ctx, const uint8_t *in, size_t in_len)
void	ocrypto_sha3_512_update (ocrypto_sha3_ctx *ctx, const uint8_t *in, size_t in_len)
void	ocrypto_sha3_224_final (ocrypto_sha3_ctx *ctx, uint8_t r[(28)])
void	ocrypto_sha3_256_final (ocrypto_sha3_ctx *ctx, uint8_t r[(32)])
void	ocrypto_sha3_384_final (ocrypto_sha3_ctx *ctx, uint8_t r[(48)])
void	ocrypto_sha3_512_final (ocrypto_sha3_ctx *ctx, uint8_t r[(64)])

Detailed Description

SHA3 algorithms, with 224, 256, 384 and 512 bit outputs.

The SHA3 family is a set of cryptographic hash functions initiated by the NSA. It is the successor of the SHA1 and SHA2 algorithms.

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.

See also

FIPS - SHA-3 Standard: Permutation-Based Hash and Extendable-Output Functions