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CodeSonar® 9.2p0 CONFIDENTIAL CodeSecure Inc
Java

JAVA.CRYPTO.RF : Risky Cryptographic Field (Java)

要旨

An unsafe cryptographic 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Some cryptography algorithms are nowadays considered as outdated and unsafe or actually broken, since they are too easy to decode.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.

プロパティ

クラス名 Risky Cryptographic Field (Java)
日本語クラス名 Risky Cryptographic Field (Java)
クラス分類 セキュリティ (security)
ニーモニック JAVA.CRYPTO.RF
カテゴリー
CWE CWE:327 Use of a Broken or Risky Cryptographic Algorithm
CERT-Java CERT-Java:DRD18 Do not use the default behavior in a cryptographic library if it does not use recommended practices
  CERT-Java:MSC02-J Generate strong random numbers
OWASP-2017 OWASP-2017:A2 Broken authentication
OWASP-2021 OWASP-2021:A2 Cryptographic failures
  OWASP-2021:A7 Identification and authorization failures
OWASP-2025 OWASP-2025:A04 Cryptographic Failures
対応言語 Available for Java and Kotlin.
有効/無効設定 このワーニングクラスのチェックはデフォルトで有効になっています。チェックを無効にするにはプロジェクト設定ファイル （configuration file）に以下の WARNING_FILTER ルールを追加してください。 
WARNING_FILTER += discard class="Risky Cryptographic Field (Java)"

例 

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
  }
}

解決法

Use a safer cryptography algorithm.

関連のある設定ファイルパラメータ

設定ファイルの以下のパラメータがこのワーニングクラスのチェックに影響します。

 

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