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CodeSonar® 9.2p0 CONFIDENTIAL CodeSecure Inc
Java

JAVA.CRYPTO.RCA : Risky Cipher Algorithm (Java)

要旨

Identify the use of unsafe cryptographic algorithms.

A weak, possibly reversible cryptographic cipher 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Some cryptography algorithms are nowadays considered as outdated and unsafe or actually broken, since they are too easy to decode.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 Cipher Algorithm (Java)
日本語クラス名 Risky Cipher Algorithm (Java)
クラス分類 セキュリティ (security)
ニーモニック JAVA.CRYPTO.RCA
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
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 Cipher Algorithm (Java)"

例

In the following example, the analysis triggers a Risky Cipher Algorithm (Java) warning because getProperty() returns default value MyEncryptAlgo/ECB/PKCS5Padding if the key cryptoAlg1 is not found in the property list. ECB (Electronic Code Book) mode is not recommended for use in asymmetric encryption.

import java.util.Properties;

public class MyCryptoAlgorithm { 
  public static String getCryptographyAlgorithm(Properties props) { 
      return props.getProperty("cryptoAlg1", "MyEncryptAlgo/ECB/PKCS5Padding"); // "Risky Cipher Algorithm (Java)" warning issued here.
  } 
}

In this example, the programmer should change the cipher to a more secure one, for instance replacing ECB with CBC.

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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