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