node-noise/lib/crypto/stablelib.js

"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
exports.stablelib = void 0;
var hkdf_1 = require("@stablelib/hkdf");
var x25519 = __importStar(require("@stablelib/x25519"));
var sha256_1 = require("@stablelib/sha256");
var chacha20poly1305_1 = require("@stablelib/chacha20poly1305");
exports.stablelib = {
    hashSHA256: function (data) {
        return (0, sha256_1.hash)(data);
    },
    getHKDF: function (ck, ikm) {
        var hkdf = new hkdf_1.HKDF(sha256_1.SHA256, ikm, ck);
        var okmU8Array = hkdf.expand(96);
        var okm = okmU8Array;
        var k1 = okm.subarray(0, 32);
        var k2 = okm.subarray(32, 64);
        var k3 = okm.subarray(64, 96);
        return [k1, k2, k3];
    },
    generateX25519KeyPair: function () {
        var keypair = x25519.generateKeyPair();
        return {
            publicKey: keypair.publicKey,
            privateKey: keypair.secretKey
        };
    },
    generateX25519KeyPairFromSeed: function (seed) {
        var keypair = x25519.generateKeyPairFromSeed(seed);
        return {
            publicKey: keypair.publicKey,
            privateKey: keypair.secretKey
        };
    },
    generateX25519SharedKey: function (privateKey, publicKey) {
        return x25519.sharedKey(privateKey, publicKey);
    },
    chaCha20Poly1305Encrypt: function (plaintext, nonce, ad, k) {
        var ctx = new chacha20poly1305_1.ChaCha20Poly1305(k);
        return ctx.seal(nonce, plaintext, ad);
    },
    chaCha20Poly1305Decrypt: function (ciphertext, nonce, ad, k, dst) {
        var ctx = new chacha20poly1305_1.ChaCha20Poly1305(k);
        return ctx.open(nonce, ciphertext, ad, dst);
    }
};
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