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1 | /* | |
2 | * libopenemv - a library to work with EMV family of smart cards | |
3 | * Copyright (C) 2015 Dmitry Eremin-Solenikov | |
4 | * | |
5 | * This library is free software; you can redistribute it and/or | |
6 | * modify it under the terms of the GNU Lesser General Public | |
7 | * License as published by the Free Software Foundation; either | |
8 | * version 2.1 of the License, or (at your option) any later version. | |
9 | * | |
10 | * This library is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * Lesser General Public License for more details. | |
14 | */ | |
15 | ||
16 | #ifndef CRYPTO_BACKEND_H | |
17 | #define CRYPTO_BACKEND_H | |
18 | ||
19 | #include "crypto.h" | |
20 | ||
21 | #include <stddef.h> | |
22 | #include <stdarg.h> | |
23 | ||
24 | struct crypto_hash { | |
25 | enum crypto_algo_hash algo; | |
26 | void (*write)(struct crypto_hash *ch, const unsigned char *buf, size_t len); | |
27 | unsigned char *(*read)(struct crypto_hash *ch); | |
28 | void (*close)(struct crypto_hash *ch); | |
29 | size_t (*get_size)(const struct crypto_hash *ch); | |
30 | }; | |
31 | ||
32 | struct crypto_pk { | |
33 | enum crypto_algo_pk algo; | |
34 | unsigned char *(*encrypt)(const struct crypto_pk *cp, const unsigned char *buf, size_t len, size_t *clen); | |
35 | unsigned char *(*decrypt)(const struct crypto_pk *cp, const unsigned char *buf, size_t len, size_t *clen); | |
36 | unsigned char *(*get_parameter)(const struct crypto_pk *cp, unsigned param, size_t *plen); | |
37 | size_t (*get_nbits)(const struct crypto_pk *cp); | |
38 | void (*close)(struct crypto_pk *cp); | |
39 | }; | |
40 | ||
41 | struct crypto_backend { | |
42 | struct crypto_hash *(*hash_open)(enum crypto_algo_hash hash); | |
43 | struct crypto_pk *(*pk_open)(enum crypto_algo_pk pk, va_list vl); | |
44 | struct crypto_pk *(*pk_open_priv)(enum crypto_algo_pk pk, va_list vl); | |
45 | struct crypto_pk *(*pk_genkey)(enum crypto_algo_pk pk, va_list vl); | |
46 | }; | |
47 | ||
48 | struct crypto_backend *crypto_polarssl_init(void); | |
49 | ||
50 | #endif |