how to encrypt file with AES in Java?

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JTL.zheng - 06 Jan 2007 16:01 GMT

Could you give me an example about how to encrypt file with AES in
Java?

something like:
public static boolean encrypt(String key, File fileIn, File fileOut);

Thank you very much

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Arne Vajhøj - 06 Jan 2007 18:18 GMT

> Could you give me an example about how to encrypt file with AES in
> Java?
>
> something like:
> public static boolean encrypt(String key, File fileIn, File fileOut);

If you setup as:

Cipher aes = Cipher.getInstance("AES");
aes.init(mode, new SecretKeySpec(key.getBytes("UTF-8"), "AES"));

then you can encrypt with:
b2 = aes.update(b, 0, n);
and:
b2 = aes.doFinal(b, 0, n);

Arne

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