java - 我看不懂的加密代码段

Question

我正在阅读有关加密的内容，并且很难理解加密程序的这 3 个 Java 语句。

    cipher = Cipher.getInstance("AES");

    cipher.init(Cipher.ENCRYPT_MODE, skeySpec);

    encrypted = cipher.doFinal(str.getBytes())

有人可以帮忙吗？

Answer 1

简单来说，

• create a new Encrypting Device using the AES algorithm;
• make it ready
• get the bytes of the string str and encrypt them; return the result into the encrypted object, whatever that is.

你到底不明白什么？