tunsafe-clang15/crypto/blake2s.h

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/*
BLAKE2 reference source code package - reference C implementations
Copyright 2012, Samuel Neves <sneves@dei.uc.pt>. You may use this under the
terms of the CC0, the OpenSSL Licence, or the Apache Public License 2.0, at
your option. The terms of these licenses can be found at:
- CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
- OpenSSL license : https://www.openssl.org/source/license.html
- Apache 2.0 : http://www.apache.org/licenses/LICENSE-2.0
More information about the BLAKE2 hash function can be found at
https://blake2.net.
*/
#ifndef BLAKE2_H
#define BLAKE2_H
#include <stddef.h>
#include <stdint.h>
#include "tunsafe_types.h"
#if defined(_MSC_VER)
#define BLAKE2_PACKED(x) __pragma(pack(push, 1)) x __pragma(pack(pop))
#else
#define BLAKE2_PACKED(x) x __attribute__((packed))
#endif
#if defined(__cplusplus)
//extern "C" {
#endif
enum blake2s_constant {
BLAKE2S_BLOCKBYTES = 64,
BLAKE2S_OUTBYTES = 32,
BLAKE2S_KEYBYTES = 32,
BLAKE2S_SALTBYTES = 8,
BLAKE2S_PERSONALBYTES = 8
};
BLAKE2_PACKED(struct blake2s_param__ {
uint8_t digest_length; /* 1 */
uint8_t key_length; /* 2 */
uint8_t fanout; /* 3 */
uint8_t depth; /* 4 */
uint32_t leaf_length; /* 8 */
uint32_t node_offset; /* 12 */
uint16_t xof_length; /* 14 */
uint8_t node_depth; /* 15 */
uint8_t inner_length; /* 16 */
/* uint8_t reserved[0]; */
uint32_t salt[BLAKE2S_SALTBYTES / 4]; /* 24 */
uint32_t personal[BLAKE2S_PERSONALBYTES / 4]; /* 32 */
});
typedef struct blake2s_param__ blake2s_param;
/* Padded structs result in a compile-time error */
enum {
BLAKE2_DUMMY_1 = 1 / (sizeof(blake2s_param) == BLAKE2S_OUTBYTES ? 1 : 0),
};
typedef struct blake2s_state__ {
union {
uint32_t h[8];
blake2s_param param;
};
uint32_t t[2];
uint32_t f[2];
uint8_t buf[BLAKE2S_BLOCKBYTES];
size_t buflen;
size_t outlen;
uint8_t last_node;
} blake2s_state;
/* Streaming API */
void blake2s_init(blake2s_state *S, size_t outlen);
void blake2s_init_key(blake2s_state *S, size_t outlen, const void *key, size_t keylen);
void blake2s_init_param(blake2s_state *S, const blake2s_param *P);
void blake2s_update(blake2s_state *S, const void *in, size_t inlen);
void blake2s_final(blake2s_state *S, void *out, size_t outlen);
/* Simple API */
void blake2s(void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen);
void blake2s_hmac(uint8_t *out, size_t outlen, const uint8_t *in, size_t inlen, const uint8_t *key, size_t keylen);
void blake2s_hkdf(uint8 *dst1, size_t dst1_size,
uint8 *dst2, size_t dst2_size,
uint8 *dst3, size_t dst3_size,
const uint8 *data, size_t data_size,
const uint8 *key, size_t key_size);
#if defined(__cplusplus)
//}
#endif
#endif