libcrypto.ENGINE_by_id.argtypes=(c_char_p,)
libcrypto.ENGINE_set_default.argtypes=(c_void_p,c_int)
libcrypto.ENGINE_ctrl_cmd_string.argtypes=(c_void_p,c_char_p,c_char_p,c_int)
libcrypto.ENGINE_by_id.argtypes=(c_char_p,)
libcrypto.ENGINE_set_default.argtypes=(c_void_p,c_int)
libcrypto.ENGINE_ctrl_cmd_string.argtypes=(c_void_p,c_char_p,c_char_p,c_int)