1 /*
2 BLAKE2 reference source code package - optimized C implementations
3
4 Written in 2012 by Samuel Neves <sneves@dei.uc.pt>
5
6 To the extent possible under law, the author(s) have dedicated all copyright
7 and related and neighboring rights to this software to the public domain
8 worldwide. This software is distributed without any warranty.
9
10 You should have received a copy of the CC0 Public Domain Dedication along with
11 this software. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
12 */
13 #pragma once
14 #ifndef __BLAKE2_H__
15 #define __BLAKE2_H__
16
17 #include <stddef.h>
18 #include <stdint.h>
19
20 #if defined(_WIN32) || defined(__CYGWIN__)
21 #define BLAKE2_DLL_IMPORT __declspec(dllimport)
22 #define BLAKE2_DLL_EXPORT __declspec(dllexport)
23 #define BLAKE2_DLL_PRIVATE
24 #elif __GNUC__ >= 4
25 #define BLAKE2_DLL_IMPORT __attribute__ ((visibility ("default")))
26 #define BLAKE2_DLL_EXPORT __attribute__ ((visibility ("default")))
27 #define BLAKE2_DLL_PRIVATE __attribute__ ((visibility ("hidden")))
28 #else
29 #define BLAKE2_DLL_IMPORT
30 #define BLAKE2_DLL_EXPORT
31 #define BLAKE2_DLL_PRIVATE
32 #endif
33
34 #if defined(BLAKE2_DLL)
35 #if defined(BLAKE2_DLL_EXPORTS) // defined if we are building the DLL
36 #define BLAKE2_API BLAKE2_DLL_EXPORT
37 #else
38 #define BLAKE2_API BLAKE2_DLL_IMPORT
39 #endif
40 #define BLAKE2_PRIVATE BLAKE2_DLL_PRIVATE // must only be used by hidden logic
41 #else
42 #define BLAKE2_API
43 #define BLAKE2_PRIVATE
44 #endif
45
46 #if defined(__cplusplus)
47 extern "C" {
48 #elif defined(_MSC_VER) && !defined(inline)
49 #define inline __inline
50 #endif
51
52 enum blake2s_constant
53 {
54 BLAKE2S_BLOCKBYTES = 64,
55 BLAKE2S_OUTBYTES = 32,
56 BLAKE2S_KEYBYTES = 32,
57 BLAKE2S_SALTBYTES = 8,
58 BLAKE2S_PERSONALBYTES = 8
59 };
60
61 enum blake2b_constant
62 {
63 BLAKE2B_BLOCKBYTES = 128,
64 BLAKE2B_OUTBYTES = 64,
65 BLAKE2B_KEYBYTES = 64,
66 BLAKE2B_SALTBYTES = 16,
67 BLAKE2B_PERSONALBYTES = 16
68 };
69
70 #pragma pack(push, 1)
71 typedef struct __blake2s_param
72 {
73 uint8_t digest_length; // 1
74 uint8_t key_length; // 2
75 uint8_t fanout; // 3
76 uint8_t depth; // 4
77 uint32_t leaf_length; // 8
78 uint8_t node_offset[6];// 14
79 uint8_t node_depth; // 15
80 uint8_t inner_length; // 16
81 // uint8_t reserved[0];
82 uint8_t salt[BLAKE2S_SALTBYTES]; // 24
83 uint8_t personal[BLAKE2S_PERSONALBYTES]; // 32
84 } blake2s_param;
85
86 typedef struct __blake2s_state
87 {
88 uint32_t h[8];
89 uint32_t t[2];
90 uint32_t f[2];
91 uint8_t buf[2 * BLAKE2S_BLOCKBYTES];
92 uint32_t buflen;
93 uint8_t outlen;
94 uint8_t last_node;
95 } blake2s_state;
96
97 typedef struct __blake2b_param
98 {
99 uint8_t digest_length; // 1
100 uint8_t key_length; // 2
101 uint8_t fanout; // 3
102 uint8_t depth; // 4
103 uint32_t leaf_length; // 8
104 uint64_t node_offset; // 16
105 uint8_t node_depth; // 17
106 uint8_t inner_length; // 18
107 uint8_t reserved[14]; // 32
108 uint8_t salt[BLAKE2B_SALTBYTES]; // 48
109 uint8_t personal[BLAKE2B_PERSONALBYTES]; // 64
110 } blake2b_param;
111
112 typedef struct __blake2b_state
113 {
114 uint64_t h[8];
115 uint64_t t[2];
116 uint64_t f[2];
117 uint8_t buf[2 * BLAKE2B_BLOCKBYTES];
118 uint32_t buflen;
119 uint8_t outlen;
120 uint8_t last_node;
121 } blake2b_state;
122
123 typedef struct __blake2sp_state
124 {
125 blake2s_state S[8][1];
126 blake2s_state R[1];
127 uint8_t buf[8 * BLAKE2S_BLOCKBYTES];
128 uint32_t buflen;
129 uint8_t outlen;
130 } blake2sp_state;
131
132 typedef struct __blake2bp_state
133 {
134 blake2b_state S[4][1];
135 blake2b_state R[1];
136 uint8_t buf[4 * BLAKE2B_BLOCKBYTES];
137 uint32_t buflen;
138 uint8_t outlen;
139 } blake2bp_state;
140 #pragma pack(pop)
141
142 // Streaming API
143 BLAKE2_API int blake2s_init( blake2s_state *S, size_t outlen );
144 BLAKE2_API int blake2s_init_key( blake2s_state *S, size_t outlen, const void *key, size_t keylen );
145 BLAKE2_API int blake2s_init_param( blake2s_state *S, const blake2s_param *P );
146 BLAKE2_API int blake2s_update( blake2s_state *S, const uint8_t *in, size_t inlen );
147 BLAKE2_API int blake2s_final( blake2s_state *S, uint8_t *out, size_t outlen );
148
149 BLAKE2_API int blake2b_init( blake2b_state *S, size_t outlen );
150 BLAKE2_API int blake2b_init_key( blake2b_state *S, size_t outlen, const void *key, size_t keylen );
151 BLAKE2_API int blake2b_init_param( blake2b_state *S, const blake2b_param *P );
152 BLAKE2_API int blake2b_update( blake2b_state *S, const uint8_t *in, size_t inlen );
153 BLAKE2_API int blake2b_final( blake2b_state *S, uint8_t *out, size_t outlen );
154
155 BLAKE2_API int blake2sp_init( blake2sp_state *S, size_t outlen );
156 BLAKE2_API int blake2sp_init_key( blake2sp_state *S, size_t outlen, const void *key, size_t keylen );
157 BLAKE2_API int blake2sp_update( blake2sp_state *S, const uint8_t *in, size_t inlen );
158 BLAKE2_API int blake2sp_final( blake2sp_state *S, uint8_t *out, size_t outlen );
159
160 BLAKE2_API int blake2bp_init( blake2bp_state *S, size_t outlen );
161 BLAKE2_API int blake2bp_init_key( blake2bp_state *S, size_t outlen, const void *key, size_t keylen );
162 BLAKE2_API int blake2bp_update( blake2bp_state *S, const uint8_t *in, size_t inlen );
163 BLAKE2_API int blake2bp_final( blake2bp_state *S, uint8_t *out, size_t outlen );
164
165 // Simple API
166 BLAKE2_API int blake2s( uint8_t *out, const void *in, const void *key, size_t outlen, size_t inlen, size_t keylen );
167 BLAKE2_API int blake2b( uint8_t *out, const void *in, const void *key, size_t outlen, size_t inlen, size_t keylen );
168
169 BLAKE2_API int blake2sp( uint8_t *out, const void *in, const void *key, size_t outlen, size_t inlen, size_t keylen );
170 BLAKE2_API int blake2bp( uint8_t *out, const void *in, const void *key, size_t outlen, size_t inlen, size_t keylen );
171
172 #if defined(__cplusplus)
173 }
174 #endif
175
176 #endif
177