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21#ifndef QCRYPTO_BLOCKPRIV_H
22#define QCRYPTO_BLOCKPRIV_H
23
24#include "crypto/block.h"
25
26typedef struct QCryptoBlockDriver QCryptoBlockDriver;
27
28struct QCryptoBlock {
29 QCryptoBlockFormat format;
30
31 const QCryptoBlockDriver *driver;
32 void *opaque;
33
34 QCryptoCipher *cipher;
35 QCryptoIVGen *ivgen;
36 QCryptoHashAlgorithm kdfhash;
37 size_t niv;
38 uint64_t payload_offset;
39 uint64_t sector_size;
40};
41
42struct QCryptoBlockDriver {
43 int (*open)(QCryptoBlock *block,
44 QCryptoBlockOpenOptions *options,
45 const char *optprefix,
46 QCryptoBlockReadFunc readfunc,
47 void *opaque,
48 unsigned int flags,
49 Error **errp);
50
51 int (*create)(QCryptoBlock *block,
52 QCryptoBlockCreateOptions *options,
53 const char *optprefix,
54 QCryptoBlockInitFunc initfunc,
55 QCryptoBlockWriteFunc writefunc,
56 void *opaque,
57 Error **errp);
58
59 int (*get_info)(QCryptoBlock *block,
60 QCryptoBlockInfo *info,
61 Error **errp);
62
63 void (*cleanup)(QCryptoBlock *block);
64
65 int (*encrypt)(QCryptoBlock *block,
66 uint64_t startsector,
67 uint8_t *buf,
68 size_t len,
69 Error **errp);
70 int (*decrypt)(QCryptoBlock *block,
71 uint64_t startsector,
72 uint8_t *buf,
73 size_t len,
74 Error **errp);
75
76 bool (*has_format)(const uint8_t *buf,
77 size_t buflen);
78};
79
80
81int qcrypto_block_decrypt_helper(QCryptoCipher *cipher,
82 size_t niv,
83 QCryptoIVGen *ivgen,
84 int sectorsize,
85 uint64_t offset,
86 uint8_t *buf,
87 size_t len,
88 Error **errp);
89
90int qcrypto_block_encrypt_helper(QCryptoCipher *cipher,
91 size_t niv,
92 QCryptoIVGen *ivgen,
93 int sectorsize,
94 uint64_t offset,
95 uint8_t *buf,
96 size_t len,
97 Error **errp);
98
99#endif
100