技术咨询：Amazon Corretto是否支持JCE？Oracle JDK迁移需求确认

Hey there! Great question about making the switch from Oracle JDK to Amazon Corretto. Let me break this down clearly for you:

• No need to install separate JCE files with Amazon Corretto: Unlike older versions of Oracle JDK (pre-8u161) where you had to manually download and install the JCE Unlimited Strength Jurisdiction Policy Files, Amazon Corretto 8 and all newer versions come with unlimited strength cryptography enabled by default.
• Why this works: Corretto is built from OpenJDK source, and starting with OpenJDK 8u161, the unlimited strength policies were integrated directly into the JDK and turned on by default. Corretto follows this same approach, so you get full access to strong encryption algorithms right out of the box.
• Quick verification method: You can run a tiny code snippet to confirm the setup. For example:

  import javax.crypto.Cipher;
  public class CheckJCEStatus {
      public static void main(String[] args) throws Exception {
          int maxAESKeyLength = Cipher.getMaxAllowedKeyLength("AES");
          System.out.println("Max AES key length allowed: " + maxAESKeyLength);
      }
  }
  

  If the output shows Integer.MAX_VALUE (a huge numerical value), that confirms unlimited strength cryptography is active.

So when you migrate to Amazon Corretto, you can skip the entire JCE file installation step—it’s already taken care of for you.

内容的提问来源于stack exchange，提问作者Ravi dev14