ccxws/dist/src/Jwt.js

Websocket client for 37 cryptocurrency exchanges

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.hs256 = void 0;
const crypto_1 = require("crypto");
function base64Encode(value) {
    let buffer;
    if (Buffer.isBuffer(value)) {
        buffer = value;
    }
    else if (typeof value === "object") {
        buffer = Buffer.from(JSON.stringify(value));
    }
    else if (typeof value === "string") {
        buffer = Buffer.from(value);
    }
    return buffer.toString("base64");
}
function base64UrlEncode(value) {
    return base64Encode(value).replace(/\+/g, "-").replace(/\//g, "_").replace(/=/g, "");
}
function hmacSign(algorithm, secret, data) {
    const hmac = (0, crypto_1.createHmac)(algorithm, secret);
    hmac.update(data);
    return hmac.digest();
}
function hs256(payload, secret) {
    const encHeader = base64UrlEncode({ alg: "HS256", typ: "JWT" });
    const encPayload = base64UrlEncode(payload);
    const sig = hmacSign("sha256", secret, encHeader + "." + encPayload);
    const encSig = base64UrlEncode(sig);
    return encHeader + "." + encPayload + "." + encSig;
}
exports.hs256 = hs256;
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