+int bio_to_mem(unsigned char **out, int maxlen, BIO *in);
+int pkey_ctrl_string(EVP_PKEY_CTX *ctx, char *value);
+int init_gen_str(BIO *err, EVP_PKEY_CTX **pctx,
+ const char *algname, ENGINE *e, int do_param);
+void jpake_client_auth(BIO *out, BIO *conn, const char *secret);
+void jpake_server_auth(BIO *out, BIO *conn, const char *secret);