3.5.4->3.5.7 migration issues with scrypt

Hi @drcrypto

Without knowing more specific information about the application, and any possible intersection between SQLCipher for Android and your scrypt implementation it is difficult for us to speculate what the issue may be. If you can provide more details about what capacity SQLCipher for Android is being used, and what if any interplay your scrypt library has during execution, we may be able to help diagnose the behavior further. We have a writeup on general SQLCipher performance that you may find beneficial in troubleshooting further.