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:
        CryptoModule.prototype.encrypt = function (data) {
            var encrypted = this.defaultCryptor.encrypt(data);
            if (!encrypted.metadata)
                return encrypted.data;
            var headerData = this.getHeaderData(encrypted);
            return this.concatArrayBuffer(headerData, encrypted.data);
        };