2 BLAKE2 reference source code package - reference C implementations
4 Copyright 2012, Samuel Neves <sneves@dei.uc.pt>. You may use this under the
5 terms of the CC0, the OpenSSL Licence, or the Apache Public License 2.0, at
6 your option. The terms of these licenses can be found at:
8 - CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
9 - OpenSSL license : https://www.openssl.org/source/license.html
10 - Apache 2.0 : http://www.apache.org/licenses/LICENSE-2.0
12 More information about the BLAKE2 hash function can be found at
22 #define BLAKE2_PACKED(x) __pragma(pack(push, 1)) x __pragma(pack(pop))
24 #define BLAKE2_PACKED(x) x __attribute__((packed))
27 #if defined(__cplusplus)
33 BLAKE2S_BLOCKBYTES = 64,
34 BLAKE2S_OUTBYTES = 32,
35 BLAKE2S_KEYBYTES = 32,
36 BLAKE2S_SALTBYTES = 8,
37 BLAKE2S_PERSONALBYTES = 8
42 BLAKE2B_BLOCKBYTES = 128,
43 BLAKE2B_OUTBYTES = 64,
44 BLAKE2B_KEYBYTES = 64,
45 BLAKE2B_SALTBYTES = 16,
46 BLAKE2B_PERSONALBYTES = 16
49 typedef struct blake2s_state__
54 uint8_t buf[BLAKE2S_BLOCKBYTES];
60 typedef struct blake2b_state__
65 uint8_t buf[BLAKE2B_BLOCKBYTES];
71 typedef struct blake2sp_state__
73 blake2s_state S[8][1];
75 uint8_t buf[8 * BLAKE2S_BLOCKBYTES];
80 typedef struct blake2bp_state__
82 blake2b_state S[4][1];
84 uint8_t buf[4 * BLAKE2B_BLOCKBYTES];
89 BLAKE2_PACKED(struct blake2s_param__
91 uint8_t digest_length; /* 1 */
92 uint8_t key_length; /* 2 */
93 uint8_t fanout; /* 3 */
94 uint8_t depth; /* 4 */
95 uint32_t leaf_length; /* 8 */
96 uint32_t node_offset; /* 12 */
97 uint16_t xof_length; /* 14 */
98 uint8_t node_depth; /* 15 */
99 uint8_t inner_length; /* 16 */
100 /* uint8_t reserved[0]; */
101 uint8_t salt[BLAKE2S_SALTBYTES]; /* 24 */
102 uint8_t personal[BLAKE2S_PERSONALBYTES]; /* 32 */
105 typedef struct blake2s_param__ blake2s_param;
107 BLAKE2_PACKED(struct blake2b_param__
109 uint8_t digest_length; /* 1 */
110 uint8_t key_length; /* 2 */
111 uint8_t fanout; /* 3 */
112 uint8_t depth; /* 4 */
113 uint32_t leaf_length; /* 8 */
114 uint32_t node_offset; /* 12 */
115 uint32_t xof_length; /* 16 */
116 uint8_t node_depth; /* 17 */
117 uint8_t inner_length; /* 18 */
118 uint8_t reserved[14]; /* 32 */
119 uint8_t salt[BLAKE2B_SALTBYTES]; /* 48 */
120 uint8_t personal[BLAKE2B_PERSONALBYTES]; /* 64 */
123 typedef struct blake2b_param__ blake2b_param;
125 typedef struct blake2xs_state__
131 typedef struct blake2xb_state__
137 /* Padded structs result in a compile-time error */
139 BLAKE2_DUMMY_1 = 1/(sizeof(blake2s_param) == BLAKE2S_OUTBYTES),
140 BLAKE2_DUMMY_2 = 1/(sizeof(blake2b_param) == BLAKE2B_OUTBYTES)
144 int blake2s_init( blake2s_state *S, size_t outlen );
145 int blake2s_init_key( blake2s_state *S, size_t outlen, const void *key, size_t keylen );
146 int blake2s_init_param( blake2s_state *S, const blake2s_param *P );
147 int blake2s_update( blake2s_state *S, const void *in, size_t inlen );
148 int blake2s_final( blake2s_state *S, void *out, size_t outlen );
150 int blake2b_init( blake2b_state *S, size_t outlen );
151 int blake2b_init_key( blake2b_state *S, size_t outlen, const void *key, size_t keylen );
152 int blake2b_init_param( blake2b_state *S, const blake2b_param *P );
153 int blake2b_update( blake2b_state *S, const void *in, size_t inlen );
154 int blake2b_final( blake2b_state *S, void *out, size_t outlen );
156 int blake2sp_init( blake2sp_state *S, size_t outlen );
157 int blake2sp_init_key( blake2sp_state *S, size_t outlen, const void *key, size_t keylen );
158 int blake2sp_update( blake2sp_state *S, const void *in, size_t inlen );
159 int blake2sp_final( blake2sp_state *S, void *out, size_t outlen );
161 int blake2bp_init( blake2bp_state *S, size_t outlen );
162 int blake2bp_init_key( blake2bp_state *S, size_t outlen, const void *key, size_t keylen );
163 int blake2bp_update( blake2bp_state *S, const void *in, size_t inlen );
164 int blake2bp_final( blake2bp_state *S, void *out, size_t outlen );
166 /* Variable output length API */
167 int blake2xs_init( blake2xs_state *S, const size_t outlen );
168 int blake2xs_init_key( blake2xs_state *S, const size_t outlen, const void *key, size_t keylen );
169 int blake2xs_update( blake2xs_state *S, const void *in, size_t inlen );
170 int blake2xs_final(blake2xs_state *S, void *out, size_t outlen);
172 int blake2xb_init( blake2xb_state *S, const size_t outlen );
173 int blake2xb_init_key( blake2xb_state *S, const size_t outlen, const void *key, size_t keylen );
174 int blake2xb_update( blake2xb_state *S, const void *in, size_t inlen );
175 int blake2xb_final(blake2xb_state *S, void *out, size_t outlen);
178 int blake2s( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen );
179 int blake2b( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen );
181 int blake2sp( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen );
182 int blake2bp( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen );
184 int blake2xs( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen );
185 int blake2xb( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen );
187 /* This is simply an alias for blake2b */
188 int blake2( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen );
190 #if defined(__cplusplus)