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#ifndef SSH_CIPHER_H
#define SSH_CIPHER_H
#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>
#include <openssl/evp.h>
#ifdef __cplusplus
extern "C" {
#endif
typedef struct ssh_cipher_t SSH_CIPHER;
typedef int (*crypt_t)(SSH_CIPHER*, const uint8_t*, uint8_t*, size_t);
typedef int (*init_t)(SSH_CIPHER*, const uint8_t*, const uint8_t*);
typedef void (*cleanup_t)(SSH_CIPHER*);
struct ssh_cipher_t
{
/*
* priv is used for things like EVP_CIPHER_CTX and EVP_CIPHER
*
* We use only one crypt function for encrypt or decrypt.
*
* Before using the crypto function, IV and key must
* be set and then init function must be called
*/
const char *name;
void *priv; /* IV and key should be placed in priv */
crypt_t crypt;
init_t init;
cleanup_t cleanup;
size_t blkSize;
size_t keySize;
size_t IVSize;
bool started;
};
typedef const EVP_CIPHER*(*SSH_EVP)(void);
typedef SSH_CIPHER*(*NEW_CIPHER)(int);
SSH_CIPHER* new_ssh_cipher_evp(SSH_EVP, size_t key, size_t iv, size_t blk, int enc);
SSH_CIPHER* new_3des_ssh1(int);
/* all_ciphers.c */
extern const char all_ciphers_list[];
extern SSH_CIPHER ssh_cipher_dummy;
NEW_CIPHER search_cipher(const char *s);
#ifdef __cplusplus
}
#endif
#endif
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