java.security.NoSuchAlgorithmException: AES/ECB/PKCS5Padding

Question

I am developing an android application in which it is necessary to decrypt the file. I specify an algorithm as follows:

Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding", "Crypto");

But get the error:

java.security.NoSuchAlgorithmException: AES/ECB/PKCS5Padding

What is my mistake?

Thanks.

score 3 · Answer 1 · edited Oct 10 '14 at 00:41

3

Try and use

 Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");

If you don't specify the provider, it will look for the highest prioritized provider that does implement it.

edited Oct 10 '14 at 00:41

Maarten Bodewes

answered Oct 09 '14 at 12:57

Tapa Save

I can not use this method in android 4.2 and above: http://stackoverflow.com/questions/13383006/encryption-error-on-android-4-2 – Mark Korzhov Oct 09 '14 at 13:02
@MarkKorzhov You cannot use the `getRawKey()` from that question, because it uses `SecureRandom` but if you use that you don't understand cryptography anyway. Although the same could be said about ECB mode, mind you. – Maarten Bodewes Oct 10 '14 at 00:41
1

@MarkKorzhov: What happens if you do it anyway? – President James K. Polk Oct 10 '14 at 00:44

score -3 · Answer 2 · edited Nov 17 '14 at 11:20

-3

Define the exception handler. You need to add the proper import in the begging of your class, like this:

import java.security.NoSuchAlgorithmException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.Cipher;

edited Nov 17 '14 at 11:20

ekostadinov

answered Nov 17 '14 at 10:56

Yuriy

2 Answers2