how to encrypt file with AES in Java?

Discussion in 'Java' started by JTL.zheng, Jan 6, 2007.

  1. JTL.zheng

    JTL.zheng Guest

    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
    JTL.zheng, Jan 6, 2007
    #1
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  2. JTL.zheng wrote:
    > 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
    =?UTF-8?B?QXJuZSBWYWpow7hq?=, Jan 6, 2007
    #2
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