proxmark3/client/emv/crypto_backend.h

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/*
* libopenemv - a library to work with EMV family of smart cards
* Copyright (C) 2015 Dmitry Eremin-Solenikov
*
* 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 2.1 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.
*/
#ifndef CRYPTO_BACKEND_H
#define CRYPTO_BACKEND_H
#include "crypto.h"
#include <stddef.h>
#include <stdarg.h>
struct crypto_hash {
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enum crypto_algo_hash algo;
void (*write)(struct crypto_hash *ch, const unsigned char *buf, size_t len);
unsigned char *(*read)(struct crypto_hash *ch);
void (*close)(struct crypto_hash *ch);
size_t (*get_size)(const struct crypto_hash *ch);
};
struct crypto_pk {
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enum crypto_algo_pk algo;
unsigned char *(*encrypt)(const struct crypto_pk *cp, const unsigned char *buf, size_t len, size_t *clen);
unsigned char *(*decrypt)(const struct crypto_pk *cp, const unsigned char *buf, size_t len, size_t *clen);
unsigned char *(*get_parameter)(const struct crypto_pk *cp, unsigned param, size_t *plen);
size_t (*get_nbits)(const struct crypto_pk *cp);
void (*close)(struct crypto_pk *cp);
};
struct crypto_backend {
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struct crypto_hash *(*hash_open)(enum crypto_algo_hash hash);
struct crypto_pk *(*pk_open)(enum crypto_algo_pk pk, va_list vl);
struct crypto_pk *(*pk_open_priv)(enum crypto_algo_pk pk, va_list vl);
struct crypto_pk *(*pk_genkey)(enum crypto_algo_pk pk, va_list vl);
};
struct crypto_backend *crypto_polarssl_init(void);
#endif