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.

Answer 1

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.

Answer 2

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; 

Look here how