1 /* 2 BLAKE2 reference source code package - reference C implementations 3 4 Copyright 2012, Samuel Neves <sneves (at) 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: 7 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 11 12 More information about the BLAKE2 hash function can be found at 13 https://blake2.net. 14 */ 15 16 #ifndef ARCHIVE_BLAKE2_H 17 #define ARCHIVE_BLAKE2_H 18 19 #include <stddef.h> 20 #include <stdint.h> 21 22 #if defined(_MSC_VER) 23 #define BLAKE2_PACKED(x) __pragma(pack(push, 1)) x __pragma(pack(pop)) 24 #elif defined(__GNUC__) 25 #define BLAKE2_PACKED(x) x __attribute__((packed)) 26 #else 27 #define BLAKE2_PACKED(x) _Pragma("pack 1") x _Pragma("pack 0") 28 #endif 29 30 #if defined(__cplusplus) 31 extern "C" { 32 #endif 33 34 enum blake2s_constant 35 { 36 BLAKE2S_BLOCKBYTES = 64, 37 BLAKE2S_OUTBYTES = 32, 38 BLAKE2S_KEYBYTES = 32, 39 BLAKE2S_SALTBYTES = 8, 40 BLAKE2S_PERSONALBYTES = 8 41 }; 42 43 enum blake2b_constant 44 { 45 BLAKE2B_BLOCKBYTES = 128, 46 BLAKE2B_OUTBYTES = 64, 47 BLAKE2B_KEYBYTES = 64, 48 BLAKE2B_SALTBYTES = 16, 49 BLAKE2B_PERSONALBYTES = 16 50 }; 51 52 typedef struct blake2s_state__ 53 { 54 uint32_t h[8]; 55 uint32_t t[2]; 56 uint32_t f[2]; 57 uint8_t buf[BLAKE2S_BLOCKBYTES]; 58 size_t buflen; 59 size_t outlen; 60 uint8_t last_node; 61 } blake2s_state; 62 63 typedef struct blake2b_state__ 64 { 65 uint64_t h[8]; 66 uint64_t t[2]; 67 uint64_t f[2]; 68 uint8_t buf[BLAKE2B_BLOCKBYTES]; 69 size_t buflen; 70 size_t outlen; 71 uint8_t last_node; 72 } blake2b_state; 73 74 typedef struct blake2sp_state__ 75 { 76 blake2s_state S[8][1]; 77 blake2s_state R[1]; 78 uint8_t buf[8 * BLAKE2S_BLOCKBYTES]; 79 size_t buflen; 80 size_t outlen; 81 } blake2sp_state; 82 83 typedef struct blake2bp_state__ 84 { 85 blake2b_state S[4][1]; 86 blake2b_state R[1]; 87 uint8_t buf[4 * BLAKE2B_BLOCKBYTES]; 88 size_t buflen; 89 size_t outlen; 90 } blake2bp_state; 91 92 BLAKE2_PACKED(struct blake2s_param__ 93 { 94 uint8_t digest_length; /* 1 */ 95 uint8_t key_length; /* 2 */ 96 uint8_t fanout; /* 3 */ 97 uint8_t depth; /* 4 */ 98 uint32_t leaf_length; /* 8 */ 99 uint32_t node_offset; /* 12 */ 100 uint16_t xof_length; /* 14 */ 101 uint8_t node_depth; /* 15 */ 102 uint8_t inner_length; /* 16 */ 103 /* uint8_t reserved[0]; */ 104 uint8_t salt[BLAKE2S_SALTBYTES]; /* 24 */ 105 uint8_t personal[BLAKE2S_PERSONALBYTES]; /* 32 */ 106 }); 107 108 typedef struct blake2s_param__ blake2s_param; 109 110 BLAKE2_PACKED(struct blake2b_param__ 111 { 112 uint8_t digest_length; /* 1 */ 113 uint8_t key_length; /* 2 */ 114 uint8_t fanout; /* 3 */ 115 uint8_t depth; /* 4 */ 116 uint32_t leaf_length; /* 8 */ 117 uint32_t node_offset; /* 12 */ 118 uint32_t xof_length; /* 16 */ 119 uint8_t node_depth; /* 17 */ 120 uint8_t inner_length; /* 18 */ 121 uint8_t reserved[14]; /* 32 */ 122 uint8_t salt[BLAKE2B_SALTBYTES]; /* 48 */ 123 uint8_t personal[BLAKE2B_PERSONALBYTES]; /* 64 */ 124 }); 125 126 typedef struct blake2b_param__ blake2b_param; 127 128 typedef struct blake2xs_state__ 129 { 130 blake2s_state S[1]; 131 blake2s_param P[1]; 132 } blake2xs_state; 133 134 typedef struct blake2xb_state__ 135 { 136 blake2b_state S[1]; 137 blake2b_param P[1]; 138 } blake2xb_state; 139 140 /* Padded structs result in a compile-time error */ 141 enum { 142 BLAKE2_DUMMY_1 = 1/(sizeof(blake2s_param) == BLAKE2S_OUTBYTES), 143 BLAKE2_DUMMY_2 = 1/(sizeof(blake2b_param) == BLAKE2B_OUTBYTES) 144 }; 145 146 /* Streaming API */ 147 int blake2s_init( blake2s_state *S, size_t outlen ); 148 int blake2s_init_key( blake2s_state *S, size_t outlen, const void *key, size_t keylen ); 149 int blake2s_init_param( blake2s_state *S, const blake2s_param *P ); 150 int blake2s_update( blake2s_state *S, const void *in, size_t inlen ); 151 int blake2s_final( blake2s_state *S, void *out, size_t outlen ); 152 153 int blake2b_init( blake2b_state *S, size_t outlen ); 154 int blake2b_init_key( blake2b_state *S, size_t outlen, const void *key, size_t keylen ); 155 int blake2b_init_param( blake2b_state *S, const blake2b_param *P ); 156 int blake2b_update( blake2b_state *S, const void *in, size_t inlen ); 157 int blake2b_final( blake2b_state *S, void *out, size_t outlen ); 158 159 int blake2sp_init( blake2sp_state *S, size_t outlen ); 160 int blake2sp_init_key( blake2sp_state *S, size_t outlen, const void *key, size_t keylen ); 161 int blake2sp_update( blake2sp_state *S, const void *in, size_t inlen ); 162 int blake2sp_final( blake2sp_state *S, void *out, size_t outlen ); 163 164 int blake2bp_init( blake2bp_state *S, size_t outlen ); 165 int blake2bp_init_key( blake2bp_state *S, size_t outlen, const void *key, size_t keylen ); 166 int blake2bp_update( blake2bp_state *S, const void *in, size_t inlen ); 167 int blake2bp_final( blake2bp_state *S, void *out, size_t outlen ); 168 169 /* Variable output length API */ 170 int blake2xs_init( blake2xs_state *S, const size_t outlen ); 171 int blake2xs_init_key( blake2xs_state *S, const size_t outlen, const void *key, size_t keylen ); 172 int blake2xs_update( blake2xs_state *S, const void *in, size_t inlen ); 173 int blake2xs_final(blake2xs_state *S, void *out, size_t outlen); 174 175 int blake2xb_init( blake2xb_state *S, const size_t outlen ); 176 int blake2xb_init_key( blake2xb_state *S, const size_t outlen, const void *key, size_t keylen ); 177 int blake2xb_update( blake2xb_state *S, const void *in, size_t inlen ); 178 int blake2xb_final(blake2xb_state *S, void *out, size_t outlen); 179 180 /* Simple API */ 181 int blake2s( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen ); 182 int blake2b( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen ); 183 184 int blake2sp( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen ); 185 int blake2bp( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen ); 186 187 int blake2xs( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen ); 188 int blake2xb( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen ); 189 190 /* This is simply an alias for blake2b */ 191 int blake2( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen ); 192 193 #if defined(__cplusplus) 194 } 195 #endif 196 197 #endif 198
Indexes created Tue Jun 23 00:25:03 UTC 2026