Java: test JCE strength

To quickly test if JCE with unlimited strength is activated on your java installation, run this:

import javax.crypto.Cipher;

class JceTest {
  public static void main(String[] args) {
    try {
      int maxKeyLen = Cipher.getMaxAllowedKeyLength("AES");
      System.out.printf("maxKeyLen=%d%n", maxKeyLen);
      if(maxKeyLen == 2147483647) {
        System.out.println("JCE with unlimited strength activated.");
      } else {
        System.out.println("JCE with unlimited strength NOT activated!");
      }
    } catch (Exception e){
      System.out.println("Sad world :(");
    }
  }
}

 

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