+/* Struct describing cipher and used for init/deinit.*/
+struct gost_cipher_st {
+ int nid;
+ EVP_CIPHER *cipher;
+ int block_size; /* (bytes) */
+ int key_len; /* (bytes) */
+ int iv_len;
+ int flags;
+ int (*init) (EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc);
+ int (*do_cipher)(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl);
+ int (*cleanup)(EVP_CIPHER_CTX *);
+ int ctx_size;
+ int (*set_asn1_parameters)(EVP_CIPHER_CTX *, ASN1_TYPE *);
+ int (*get_asn1_parameters)(EVP_CIPHER_CTX *, ASN1_TYPE *);
+ int (*ctrl)(EVP_CIPHER_CTX *, int type, int arg, void *ptr);
+};
+typedef struct gost_cipher_st GOST_cipher;
+
+EVP_CIPHER *GOST_init_cipher(GOST_cipher *c);
+void GOST_deinit_cipher(GOST_cipher *c);
+
+extern GOST_cipher Gost28147_89_cipher;
+extern GOST_cipher Gost28147_89_cbc_cipher;
+extern GOST_cipher Gost28147_89_cnt_cipher;
+extern GOST_cipher Gost28147_89_cnt_12_cipher;