1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
/*
* QEMU Crypto hash algorithms
*
* Copyright (c) 2015 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef QCRYPTO_HASH_H__
#define QCRYPTO_HASH_H__
#include "qapi-types.h"
/* See also "QCryptoHashAlgorithm" defined in qapi/crypto.json */
/**
* qcrypto_hash_supports:
* @alg: the hash algorithm
*
* Determine if @alg hash algorithm is supported by the
* current configured build.
*
* Returns: true if the algorithm is supported, false otherwise
*/
gboolean qcrypto_hash_supports(QCryptoHashAlgorithm alg);
/**
* qcrypto_hash_digest_len:
* @alg: the hash algorithm
*
* Determine the size of the hash digest in bytes
*
* Returns: the digest length in bytes
*/
size_t qcrypto_hash_digest_len(QCryptoHashAlgorithm alg);
/**
* qcrypto_hash_bytesv:
* @alg: the hash algorithm
* @iov: the array of memory regions to hash
* @niov: the length of @iov
* @result: pointer to hold output hash
* @resultlen: pointer to hold length of @result
* @errp: pointer to a NULL-initialized error object
*
* Computes the hash across all the memory regions
* present in @iov. The @result pointer will be
* filled with raw bytes representing the computed
* hash, which will have length @resultlen. The
* memory pointer in @result must be released
* with a call to g_free() when no longer required.
*
* Returns: 0 on success, -1 on error
*/
int qcrypto_hash_bytesv(QCryptoHashAlgorithm alg,
const struct iovec *iov,
size_t niov,
uint8_t **result,
size_t *resultlen,
Error **errp);
/**
* qcrypto_hash_bytes:
* @alg: the hash algorithm
* @buf: the memory region to hash
* @len: the length of @buf
* @result: pointer to hold output hash
* @resultlen: pointer to hold length of @result
* @errp: pointer to a NULL-initialized error object
*
* Computes the hash across all the memory region
* @buf of length @len. The @result pointer will be
* filled with raw bytes representing the computed
* hash, which will have length @resultlen. The
* memory pointer in @result must be released
* with a call to g_free() when no longer required.
*
* Returns: 0 on success, -1 on error
*/
int qcrypto_hash_bytes(QCryptoHashAlgorithm alg,
const char *buf,
size_t len,
uint8_t **result,
size_t *resultlen,
Error **errp);
/**
* qcrypto_hash_digestv:
* @alg: the hash algorithm
* @iov: the array of memory regions to hash
* @niov: the length of @iov
* @digest: pointer to hold output hash
* @errp: pointer to a NULL-initialized error object
*
* Computes the hash across all the memory regions
* present in @iov. The @digest pointer will be
* filled with the printable hex digest of the computed
* hash, which will be terminated by '\0'. The
* memory pointer in @digest must be released
* with a call to g_free() when no longer required.
*
* Returns: 0 on success, -1 on error
*/
int qcrypto_hash_digestv(QCryptoHashAlgorithm alg,
const struct iovec *iov,
size_t niov,
char **digest,
Error **errp);
/**
* qcrypto_hash_digest:
* @alg: the hash algorithm
* @buf: the memory region to hash
* @len: the length of @buf
* @digest: pointer to hold output hash
* @errp: pointer to a NULL-initialized error object
*
* Computes the hash across all the memory region
* @buf of length @len. The @digest pointer will be
* filled with the printable hex digest of the computed
* hash, which will be terminated by '\0'. The
* memory pointer in @digest must be released
* with a call to g_free() when no longer required.
*
* Returns: 0 on success, -1 on error
*/
int qcrypto_hash_digest(QCryptoHashAlgorithm alg,
const char *buf,
size_t len,
char **digest,
Error **errp);
/**
* qcrypto_hash_base64v:
* @alg: the hash algorithm
* @iov: the array of memory regions to hash
* @niov: the length of @iov
* @base64: pointer to hold output hash
* @errp: pointer to a NULL-initialized error object
*
* Computes the hash across all the memory regions
* present in @iov. The @base64 pointer will be
* filled with the base64 encoding of the computed
* hash, which will be terminated by '\0'. The
* memory pointer in @base64 must be released
* with a call to g_free() when no longer required.
*
* Returns: 0 on success, -1 on error
*/
int qcrypto_hash_base64v(QCryptoHashAlgorithm alg,
const struct iovec *iov,
size_t niov,
char **base64,
Error **errp);
/**
* qcrypto_hash_base64:
* @alg: the hash algorithm
* @buf: the memory region to hash
* @len: the length of @buf
* @base64: pointer to hold output hash
* @errp: pointer to a NULL-initialized error object
*
* Computes the hash across all the memory region
* @buf of length @len. The @base64 pointer will be
* filled with the base64 encoding of the computed
* hash, which will be terminated by '\0'. The
* memory pointer in @base64 must be released
* with a call to g_free() when no longer required.
*
* Returns: 0 on success, -1 on error
*/
int qcrypto_hash_base64(QCryptoHashAlgorithm alg,
const char *buf,
size_t len,
char **base64,
Error **errp);
#endif /* QCRYPTO_HASH_H__ */
|
