}
#else
	tag_len = EVP_CIPHER_CTX_get_tag_length(ctx);
#endif
	EVP_CIPHER_CTX_free(ctx);
	LAPPEND_INT(interp, resultObj, "tag_length", tag_len);
    }
    
    /* AEAD properties */
    {
	int aad_len = 0;
	if (flags & EVP_CIPH_FLAG_AEAD_CIPHER) {
	    aad_len = EVP_AEAD_TLS1_AAD_LEN;
	}
	LAPPEND_INT(interp, resultObj, "aad_length", aad_len);

	    for (int i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
		const SSL_CIPHER *c = sk_SSL_CIPHER_value(sk, i);
		if (c == NULL) continue;

		/* cipher name or (NONE) */
		cp = SSL_CIPHER_get_name(c);
		if (cp == NULL) break;
		Tcl_ListObjAppendElement(interp, resultObj, Tcl_NewStringObj((char *) cp, -1));
	    }

	} else {
	    char buf[BUFSIZ];
	    resultObj = Tcl_NewStringObj("", 0);
	    if (resultObj == NULL) {
		res = TCL_ERROR;