  constructor(config) {
    const enc = config.outbound;
    this.outSeqno = enc.seqno;
    this._onWrite = enc.onWrite;
    this._encKeyMain = enc.cipherKey.slice(0, 32);
    this._encKeyPktLen = enc.cipherKey.slice(32);
    this._dead = false;
  }
The software constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.