-extern EVP_CIPHER cipher_gost;
-extern EVP_CIPHER cipher_gost_cbc;
-extern EVP_CIPHER cipher_gost_cpacnt;
-extern EVP_CIPHER cipher_gost_cpcnt_12;
+const EVP_CIPHER* cipher_gost();
+const EVP_CIPHER* cipher_gost_cbc();
+const EVP_CIPHER* cipher_gost_cpacnt();
+const EVP_CIPHER* cipher_gost_cpcnt_12();
+void cipher_gost_destroy();