How to encrypt a file in java using AES

Question

I need to know how to create an AES and using it to encrypt and decrypt a file in java.

Solution

Try using a CipherOutputStream and passing in a FileOutputStream. See http://www.java2s.com/Tutorial/Java/0490__Security/UsingCipherOutputStream.htm for a quick example, just use Cipher.getInstance("AES/CBC/PKCS5Padding") instead.

Comments

[Rahul Bhatt]

stackoverflow.com/questions/992019/java-256bit-aes-encryptio‌​n shows you how to encrypt a string using AES. To encrypt a File, just read the contents as String, encrypt it and write it back to file.