multipassify-ts/dist/esm/Multipassify.js

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import crypto from 'crypto';
var BLOCK_SIZE = 16;
var Multipassify = /** @class */ (function () {
    function Multipassify(secret) {
        if (!(secret.length > 0))
            throw new Error('Invalid Secret');
        var hash = crypto.createHash('sha256').update(secret).digest();
        this._encryptionKey = hash.subarray(0, BLOCK_SIZE);
        this._signingKey = hash.subarray(BLOCK_SIZE, 32);
    }
    Multipassify.prototype.encode = function (obj) {
        if (!obj)
            throw new Error('No data encoded');
        obj['created_at'] = new Date().toISOString();
        var cipherText = this.encrypt(JSON.stringify(obj));
        var token = Buffer.concat([cipherText, this.sign(cipherText)]).toString('base64url');
        return token;
    };
    Multipassify.prototype.generateUrl = function (obj, domain) {
        if (!domain)
            throw new Error('No domain specified');
        return 'https://' + domain + '/account/login/multipass/' + this.encode(obj);
    };
    Multipassify.prototype.sign = function (data) {
        var signed = crypto
            .createHmac('sha256', this._signingKey)
            .update(data)
            .digest();
        return signed;
    };
    Multipassify.prototype.encrypt = function (plaintext) {
        var iv = crypto.randomBytes(BLOCK_SIZE);
        var cipher = crypto.createCipheriv('aes-128-cbc', this._encryptionKey, iv);
        var encrypted = Buffer.concat([
            iv,
            cipher.update(plaintext, 'utf8'),
            cipher.final(),
        ]);
        return encrypted;
    };
    return Multipassify;
}());
export { Multipassify };