#include <gcrypt.h>
+#define CIPHER_MAX_BLOCK_SIZE 32
+#define CIPHER_MAX_IV_SIZE 16
+#define CIPHER_MAX_KEY_SIZE 32
+
typedef struct cipher {
gcry_cipher_hd_t handle;
char *key;
extern bool cipher_open_blowfish_ofb(struct cipher *);
extern void cipher_close(struct cipher *);
extern size_t cipher_keylength(const struct cipher *);
-extern void cipher_get_key(const struct cipher *, void *, bool);
+extern void cipher_get_key(const struct cipher *, void *);
extern bool cipher_set_key(struct cipher *, void *, bool);
extern bool cipher_set_key_from_rsa(struct cipher *, void *, size_t, bool);
-extern bool cipher_regenerate_key(struct cipher *);
-extern bool cipher_encrypt(struct cipher *, void *indata, size_t inlen, void *outdata, size_t *outlen, bool oneshot);
-extern bool cipher_decrypt(struct cipher *, void *indata, size_t inlen, void *outdata, size_t *outlen, bool oneshot);
+extern bool cipher_regenerate_key(struct cipher *, bool);
+extern bool cipher_encrypt(struct cipher *, const void *indata, size_t inlen, void *outdata, size_t *outlen, bool oneshot);
+extern bool cipher_decrypt(struct cipher *, const void *indata, size_t inlen, void *outdata, size_t *outlen, bool oneshot);
extern int cipher_get_nid(const struct cipher *);
extern bool cipher_active(const struct cipher *);