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CodeSonar® 9.2p0 CONFIDENTIAL CodeSecure Inc
Java

JAVA.CRYPTO.KEY : Insecure Key Derivation (Java)

要旨

An insecure key derivation function is used.

The iterations of an algorithm during an encryption are very relevant for the safety of encrypted data (for more information check the OWASP documentation).

Some cryptography algorithms are nowadays considered as outdated and unsafe or actually broken, since they are too easy to decode.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 Insecure Key Derivation (Java)
日本語クラス名 Insecure Key Derivation (Java)
クラス分類 セキュリティ (security)
ニーモニック JAVA.CRYPTO.KEY
カテゴリー
CWE CWE:326 Inadequate Encryption Strength
CERT-Java CERT-Java:DRD18 Do not use the default behavior in a cryptographic library if it does not use recommended practices
OWASP-2017 OWASP-2017:A2 Broken authentication
OWASP-2021 OWASP-2021:A2 Cryptographic failures
  OWASP-2021:A4 Insecure design
  OWASP-2021:A7 Identification and authorization failures
OWASP-2025 OWASP-2025:A04 Cryptographic Failures
  OWASP-2025:A06 Insecure Design
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="Insecure Key Derivation (Java)"

例 

import javax.crypto.spec.PBEKeySpec;

public class OtherCryptographyExamples {

  public void encryptionTest(String password,String algorithm) {
    
    try {
      byte[] salt = new byte[6];
      setRandomBytes(salt);
      PBEKeySpec pbeKey = new PBEKeySpec(password.toCharArray(), salt, 50, 128); /* Warnings of two classes issued here:
                             * - Inadequate Salt (Java)
                             *   because 'salt' is only 6 bytes.
                             * - Insecure Key Derivation (Java)
                             *   because there are only 50 iterations (instead of 10,000 or more).
                            */  
      // ...
    } catch (Exception e) {
      e.printStackTrace();
    }
  }

  private void setRandomBytes(byte[] salt) {
        // ...
  }
}

解決法

Use a safer key derivation function.

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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