Language: JavaScript
Label: safe
CWE: CWE-331 \u2014 Insufficient Entropy
The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others.

Code:
        this.decrypt = function (data, key) {
            if (typeof key === 'undefined' && cryptoModule) {
                var decrypted = modules.cryptoModule.decrypt(data);
                return decrypted instanceof ArrayBuffer ? (0, base64_codec_1.encode)(decrypted) : decrypted;
            }
            else {
                return crypto.decrypt(data, key);
            }
        };