Pixelknot uses f5android library

import info.guardianproject.f5android.plugins.PluginNotificationListener;

import info.guardianproject.f5android.plugins.f5.Extract;

import info.guardianproject.f5android.plugins.f5.james.Jpeg;

import info.guardianproject.pixelknot.crypto.Aes;

https://github.com/harlo/F5Android

>>2301384

Just posting interesting stuff from the source.

package info.guardianproject.pixelknot.crypto;

/*

• Based on code from K9Mail:

• https://code.google.com/p/k9mail/source/browse/k9mail/branches/apg-integration/src/com/fsck/k9/crypto/Apg.java

*/

https://github.com/k9mail/k-9

Outside of that part, in apg.java

static final long serialVersionUID = 0x21071235;

/**

* Get secret key ids based on a given email.

*

* @param context

* @param email The email in question.

* @return key ids

*/

aes.java

SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");

I'll look some more when I can. I'll check it out in Android Studio when I get off work.