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