149 lines
3.8 KiB
C
149 lines
3.8 KiB
C
/*
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* BIRD Library -- BLAKE2 Hash Functions
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*
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* Based on the code from BLAKE2 reference source code package
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*
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* Copyright 2012, Samuel Neves <sneves@dei.uc.pt>
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*
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* You may use this under the terms of the CC0, the OpenSSL Licence, or the
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* Apache Public License 2.0, at your option. The terms of these licenses
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* can be found at:
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*
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* - CC0 1.0 Universal : https://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 : https://www.apache.org/licenses/LICENSE-2.0
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*
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* More information about the BLAKE2 hash function can be found at
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* https://blake2.net/ web.
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*/
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#ifndef _BIRD_BLAKE2_H_
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#define _BIRD_BLAKE2_H_
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#include "nest/bird.h"
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enum blake2s_constant
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{
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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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enum blake2b_constant
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{
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BLAKE2B_BLOCKBYTES = 128,
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BLAKE2B_OUTBYTES = 64,
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BLAKE2B_KEYBYTES = 64,
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BLAKE2B_SALTBYTES = 16,
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BLAKE2B_PERSONALBYTES = 16,
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};
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#define BLAKE2S_SIZE 32 // BLAKE2S_OUTBYTES
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#define BLAKE2S_BLOCK_SIZE 64 // BLAKE2S_BLOCKBYTES
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#define BLAKE2S_256_SIZE 32
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#define BLAKE2B_SIZE 64 // BLAKE2B_OUTBYTES
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#define BLAKE2B_BLOCK_SIZE 128 // BLAKE2B_BLOCKBYTES
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#define BLAKE2B_512_SIZE 64
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struct blake2s_state
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{
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u32 h[8];
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u32 t[2];
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u32 f[2];
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byte buf[BLAKE2S_BLOCK_SIZE];
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uint buflen;
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uint outlen;
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u8 last_node;
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};
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struct blake2b_state
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{
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u64 h[8];
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u64 t[2];
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u64 f[2];
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byte buf[BLAKE2B_BLOCK_SIZE];
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uint buflen;
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uint outlen;
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u8 last_node;
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};
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struct blake2s_param
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{
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u8 digest_length; /* 1 */
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u8 key_length; /* 2 */
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u8 fanout; /* 3 */
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u8 depth; /* 4 */
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u32 leaf_length; /* 8 */
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u32 node_offset; /* 12 */
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u16 xof_length; /* 14 */
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u8 node_depth; /* 15 */
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u8 inner_length; /* 16 */
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/* byte reserved[0]; */
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byte salt[BLAKE2S_SALTBYTES]; /* 24 */
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byte personal[BLAKE2S_PERSONALBYTES]; /* 32 */
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} PACKED;
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struct blake2b_param
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{
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u8 digest_length; /* 1 */
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u8 key_length; /* 2 */
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u8 fanout; /* 3 */
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u8 depth; /* 4 */
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u32 leaf_length; /* 8 */
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u32 node_offset; /* 12 */
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u32 xof_length; /* 16 */
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u8 node_depth; /* 17 */
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u8 inner_length; /* 18 */
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byte reserved[14]; /* 32 */
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byte salt[BLAKE2B_SALTBYTES]; /* 48 */
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byte personal[BLAKE2B_PERSONALBYTES]; /* 64 */
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} PACKED;
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/* Streaming API */
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int blake2s_init(struct blake2s_state *s, size_t outlen);
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int blake2s_init_key(struct blake2s_state *s, size_t outlen, const void *key, size_t keylen);
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int blake2s_init_param(struct blake2s_state *s, const struct blake2s_param *p);
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int blake2s_update(struct blake2s_state *s, const void *in, size_t inlen);
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int blake2s_final(struct blake2s_state *s, void *out, size_t outlen);
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int blake2b_init(struct blake2b_state *s, size_t outlen);
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int blake2b_init_key(struct blake2b_state *s, size_t outlen, const void *key, size_t keylen);
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int blake2b_init_param(struct blake2b_state *s, const struct blake2b_param *p);
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int blake2b_update(struct blake2b_state *s, const void *in, size_t inlen);
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int blake2b_final(struct blake2b_state *s, void *out, size_t outlen);
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/* Wrapper functions for MAC class */
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struct mac_desc;
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struct mac_context;
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struct blake2s_context {
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const struct mac_desc *type;
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struct blake2s_state state;
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byte buf[BLAKE2S_SIZE];
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};
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struct blake2b_context {
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const struct mac_desc *type;
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struct blake2b_state state;
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byte buf[BLAKE2B_SIZE];
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};
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void blake2s_mac_init(struct mac_context *ctx, const byte *key, uint keylen);
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void blake2s_mac_update(struct mac_context *ctx, const byte *data, uint datalen);
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byte *blake2s_mac_final(struct mac_context *ctx);
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void blake2b_mac_init(struct mac_context *ctx, const byte *key, uint keylen);
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void blake2b_mac_update(struct mac_context *ctx, const byte *data, uint datalen);
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byte *blake2b_mac_final(struct mac_context *ctx);
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#endif /* _BIRD_BLAKE2_H_ */
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