+
+int gost2015_process_unprotected_attributes(STACK_OF(X509_ATTRIBUTE) *attrs,
+ int encryption, size_t mac_len, unsigned char *final_tag);
+
+int gost2015_acpkm_omac_init(int nid, int enc, const unsigned char *inkey,
+ EVP_MD_CTX *omac_ctx,
+ unsigned char *outkey, unsigned char *kdf_seed);
+int init_zero_kdf_seed(unsigned char *kdf_seed);
+
+
+/* enc/dec mgm mode */
+
+void gost_mgm128_init(mgm128_context *ctx, void *key, block128_f block,
+ mul128_f mul_gf, int blen);
+
+int gost_mgm128_setiv(mgm128_context *ctx, const unsigned char *iv, size_t len);
+
+int gost_mgm128_aad(mgm128_context *ctx, const unsigned char *aad, size_t len);
+
+int gost_mgm128_encrypt(mgm128_context *ctx, const unsigned char *in,
+ unsigned char *out, size_t len);
+
+int gost_mgm128_decrypt(mgm128_context *ctx, const unsigned char *in,
+ unsigned char *out, size_t len);
+
+int gost_mgm128_finish(mgm128_context *ctx, const unsigned char *tag, size_t len);
+
+void gost_mgm128_tag(mgm128_context *ctx, unsigned char *tag, size_t len);
+