NoSuchAlghoritmExeption when you call the java cipher.getinstance()

Question

getInstance returns NoSuchAlghoritmExeptoin, although when checked by the operator, one of them is AndroidOpenSSL: Cipher. AES/ECB/PKCS5Padding

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

Answer 1

NoSuchAlghoritmExeption happens when you don't have that algorithm on your device environment.

Well, the first question here is - why do you need ECB? It has a bunch of disadvantages

Have you tried the CBC? It will work probably on all Android environments. My steps would be next:

• Try to use CBC instead of EBC, it also has PKCS5Padding, Cipher.getInstance("AES/CBC/PKCS7PADDING")
• Verify if the result matches your expectation
• Go through the docs and verify what algorithms are supported in Cipher
• Find libraries with support of needed algorithms

Describe your issue in a more detailed way, please.