Function sharedKey

vmm/src/x25519.js:1525–1534

* Returns a raw shared key between own private key and peer's public key (in other words, this is an ECC Diffie-Hellman function X25519, performing scalar multiplication). * * The result should not be used directly as a key, but should be processed with a one-way function (e.g. HSalsa20 as

(secretKey, publicKey)

     * @returns Uint8Array
     */
    function sharedKey(secretKey, publicKey) {
        checkArrayTypes(publicKey, secretKey);
        if (publicKey.length !== 32)
            throw new Error('wrong public key length');
        if (secretKey.length !== 32)
            throw new Error('wrong secret key length');
        var sharedKey = new Uint8Array(32);
        crypto_scalarmult(sharedKey, secretKey, publicKey);
        return sharedKey;
    }
    /**
     * Signs the given message using the private key and returns a signed message (signature concatenated with the message copy).
     *