Java默认加密/ AES行为 [英] Java default Crypto/AES behavior

问题描述

有没有人知道默认的Java crypto行为是：

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，我想了解这些类如何生成IV，以及什么是默认加密模式时，只需指定AES。感谢。

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（测试），AES的默认密码为AES / ECB / PKCS5Padding。 Java安全文档没有提到这一点（http://docs.oracle.com/javase/6/docs/technotes/guides/security/StandardNames.html#algspec），必须做一些JUnit测试才能找出来。

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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