@tidecloak/js
Version:
TideCloak client side JS SDK
49 lines • 1.75 kB
JavaScript
//
// Tide Protocol - Infrastructure for a TRUE Zero-Trust paradigm
// Copyright (C) 2022 Tide Foundation Ltd
//
// This program is free software and is subject to the terms of
// the Tide Community Open Code License as published by the
// Tide Foundation Limited. You may modify it and redistribute
// it in accordance with and subject to the terms of that License.
// This program is distributed WITHOUT WARRANTY of any kind,
// including without any implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.
// See the Tide Community Open Code License for more details.
// You should have received a copy of the Tide Community Open
// Code License along with this program.
// If not, see https://tide.org/licenses_tcoc2-0-0-en
//
import { Point } from "../Ed25519.js";
import { SHA256_Digest } from "../Hashing/Hash.js";
import { BigIntFromByteArray, base64ToBytes } from "../Serialization.js";
/**
* @param {Point} pub
* @param {BigInt|string|Uint8Array} priv
*/
export async function computeSharedKey(pub, priv) {
let privNum;
if (typeof (priv) == "string") {
privNum = BigIntFromByteArray(base64ToBytes(priv));
}
else if (priv instanceof Uint8Array) {
privNum = BigIntFromByteArray(priv);
}
else if (typeof (priv) == "bigint") {
privNum = priv;
}
else
throw Error("Unknown Type");
return await SHA256_Digest(pub.mul(privNum).toRawBytes());
}
/**
*
* @param {Point[]} pubs
* @param {bigint|string|Uint8Array} priv
*/
export async function generateECDHi(pubs, priv) {
const pre_ecdhi = pubs.map(async (pub) => computeSharedKey(pub, priv));
const ecdhi = await Promise.all(pre_ecdhi);
return ecdhi;
}
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