问题描述
有谁知道默认的 Java 加密行为是为了什么:
Does anyone know what the default Java crypto behavior is for:
SecretKeySpec localSecretKeySpec = new SecretKeySpec(arrayOfByte, "AES");
Cipher localCipher = Cipher.getInstance("AES");
具体来说，我希望了解这些类如何生成 IV，以及仅指定AES"时的默认加密模式是什么.谢谢.
Specifically I am looking to understand how those classes generate the IV, as well as what is the default encryption mode when just specifying "AES". Thanks.
推荐答案
对于 Oracle JDK 7(已测试)，AES 的默认密码是 AES/ECB/PKCS5Padding.Java 安全文档并没有提到这一点(http://docs.oracle.com/javase/6/docs/technotes/guides/security/StandardNames.html#algspec)，必须做一些 JUnit 测试才能找出.
For Oracle JDK 7 (tested), the default cipher for AES is AES/ECB/PKCS5Padding. The Java Security documentation doesn't mention about this though (http://docs.oracle.com/javase/6/docs/technotes/guides/security/StandardNames.html#algspec), have to do some JUnit testing to find out.
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