Function generateKeyPair

vmm/ui/src/lib/x25519.js:1644–1663

* Generates a new key pair from the given 32-byte secret seed (which should be generated with a CSPRNG) and returns it as object. * * The returned keys can be used for signing and key agreement. * * @export * @param {Uint8Array} seed required * @returns

(seed)

     * @returns
     */
    function generateKeyPair(seed) {
        checkArrayTypes(seed);
        if (seed.length !== 32)
            throw new Error('wrong seed length');
        var sk = new Uint8Array(32);
        var pk = new Uint8Array(32);
        for (var i = 0; i < 32; i++)
            sk[i] = seed[i];
        crypto_scalarmult_base(pk, sk);
        // Turn secret key into the correct format.
        sk[0] &= 248;
        sk[31] &= 127;
        sk[31] |= 64;
        // Remove sign bit from public key.
        pk[31] &= 127;
        return {
            public: pk,
            private: sk,
        };
    }

module.exports = {
    sharedKey,