private DynamoDBSigner()

in sdk1/src/main/java/com/amazonaws/services/dynamodbv2/datamodeling/encryption/DynamoDBSigner.java [77:89]

• 10 lines of code
• 2 McCabe index (conditional complexity)

  private DynamoDBSigner(String signingAlgorithm, SecureRandom rnd) {
    if (rnd == null) {
      rnd = Utils.getRng();
    }
    this.rnd = rnd;
    this.signingAlgorithm = signingAlgorithm;
    // Shorter than the output of SHA256 to avoid weak keys.
    // http://cs.nyu.edu/~dodis/ps/h-of-h.pdf
    // http://link.springer.com/chapter/10.1007%2F978-3-642-32009-5_21
    byte[] tmpKey = new byte[31];
    rnd.nextBytes(tmpKey);
    hmacComparisonKey = new SecretKeySpec(tmpKey, "HmacSHA256");
  }