Version: 0.2.1

BLAKE2

Types

Opaque context for incremental BLAKE2s or BLAKE2b hashing. Used by noxtls_blake2s_256_init / noxtls_blake2b_512_init, noxtls_blake2_update, noxtls_blake2_finish. Allocate and pass to the appropriate init; do not access fields directly.

noxtls_return_t noxtls_blake2s_256_init(noxtls_blake2_ctx_t * ctx);

Initialize BLAKE2s for a 256-bit (32-byte) digest (RFC 7693).

Parameters:

Returns: noxtls_return_t: NOXTLS_RETURN_SUCCESS on success, NOXTLS_RETURN_NULL if ctx is NULL.

noxtls_return_t noxtls_blake2b_512_init(noxtls_blake2_ctx_t * ctx);

Initialize BLAKE2b for a 512-bit (64-byte) digest (RFC 7693).

Parameters:

Returns: noxtls_return_t: NOXTLS_RETURN_SUCCESS on success, NOXTLS_RETURN_NULL if ctx is NULL.

noxtls_return_t noxtls_blake2_update(noxtls_blake2_ctx_t * ctx, const uint8_t * data, uint32_t len);

Feed data into the BLAKE2 (BLAKE2s or BLAKE2b) hash.

Parameters:

ctx — noxtls_blake2_ctx_t (from noxtls_blake2s_256_init or noxtls_blake2b_512_init)
data — Input data; may be NULL only if len is 0
len — Number of bytes to hash.

Returns: NOXTLS_RETURN_SUCCESS on success, NOXTLS_RETURN_NULL if ctx is NULL or data is NULL with len non-zero.

noxtls_return_t noxtls_blake2_finish(noxtls_blake2_ctx_t * ctx, uint8_t * hash);

Finalize BLAKE2 and write the digest.

Parameters:

ctx — noxtls_blake2_ctx_t (from noxtls_blake2s_256_init or noxtls_blake2b_512_init)
hash — Output buffer; must hold at least 32 bytes for BLAKE2s-256 or 64 bytes for BLAKE2b-512

Returns: noxtls_return_t: NOXTLS_RETURN_SUCCESS on success, NOXTLS_RETURN_NULL if ctx or hash is NULL.