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:
                                    data: Buffer.from(this.encrypt(file.data)),
                                })];
                        }
                        if (!(file.data instanceof stream_1.Readable)) return [3 /*break*/, 2];
                        if (file.contentLength === 0)
                            throw new Error('encryption error. empty content');
                        return [4 /*yield*/, this.defaultCryptor.encryptStream(file.data)];
                    case 1:
                        encryptedStream = _a.sent();
                        header = CryptorHeader.from(this.defaultCryptor.identifier, encryptedStream.metadata);
                        payload = new Uint8Array(header.length);
                        pos = 0;
                        payload.set(header.data, pos);
                        pos += header.length;
                        if (encryptedStream.metadata) {
                            pos -= encryptedStream.metadata.length;
                            payload.set(encryptedStream.metadata, pos);
                        }
                        output = new stream_1.PassThrough();
                        output.write(payload);
                        encryptedStream.stream.pipe(output);
                        return [2 /*return*/, File.create({
                                name: file.name,
                                mimeType: 'application/octet-stream',
                                stream: output,
                            })];
                    case 2: return [2 /*return*/];
                }