Function sign

vmm/src/x25519.js:1596–1611

* Signs the given message using the private key and returns signature. * * Optional random data argument (which must have 64 random bytes) turns on hash separation and randomization to make signatures non-deterministic. * * @export * @param {Uint8Array} secretKey * @par

(secretKey, msg, opt_random)

     * @returns
     */
    function sign(secretKey, msg, opt_random) {
        checkArrayTypes(secretKey, msg);
        if (secretKey.length !== 32)
            throw new Error('wrong secret key length');
        if (opt_random) {
            checkArrayTypes(opt_random);
            if (opt_random.length !== 64)
                throw new Error('wrong random data length');
        }
        var buf = new Uint8Array((opt_random ? 128 : 64) + msg.length);
        curve25519_sign(buf, msg, msg.length, secretKey, opt_random);
        var signature = new Uint8Array(64);
        for (var i = 0; i < signature.length; i++)
            signature[i] = buf[i];
        return signature;
    }
    /**
     * Verifies the given signature for the message using the given private key. Returns true if the signature is valid, false otherwise.
     *