| 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 |