JAVA.CRYPTO.WHA : Weak Hash Algorithm (Java)

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CodeSonar^® 9.2p0

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Java

JAVA.CRYPTO.WHA : Weak Hash Algorithm (Java)

Summary

A weak, possibly reversible hash algorithm is used.

Some cryptography algorithms are nowadays considered as outdated and unsafe or actually broken, since they are too easy to decode. This checker identifies uses of unsafe algorithms for cryptography.

The OWASP documentation provides more information on Using the Java Cryptographic Extensions.

Properties

Class Name

Weak Hash Algorithm (Java)

Significance

security

Mnemonic

JAVA.CRYPTO.WHA

Example

import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;

import javax.crypto.Cipher;
import javax.crypto.NoSuchPaddingException;

public class BrokenAlgorithms {

  public static void main(String[] args) throws NoSuchAlgorithmException, NoSuchPaddingException, NoSuchProviderException {
      Cipher.getInstance("DES");                   /* Warnings of two classes issued here:
                                                    * - Cryptographic Algorithm with Risky Default Cipher (Java)
                                                    * - Risky Cryptographic Algorithm (Java)
                                                    */
      Cipher.getInstance("MyComplexAlgo", "myProvider");
      Cipher.getInstance("MD5", "myProvider");     // Weak Hash Algorithm (Java) warning issued here

      String mypassword= "Hello World !";
      Base64.decodeBase64(mypassword.getBytes()); // Unsafe Base64 Encoding (Java) warning issued here

      Cipher.getInstance("AES/ECB/NoPadding");    // Cryptographic Algorithm with Weak Cipher (Java) warning issued here
      Cipher.getInstance("AES");                  // Cryptographic Algorithm with Risky Default Cipher (Java) warning issued here
  }
}

Resolution

Use a safer hash algorithm.

Relevant Configuration File Parameters

The following configuration file parameters affect checks for this warning class.

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