Revert "Some changes"

This reverts commit 75bcd91ae1c38783c686d89f8a572ec281043ff3.
Revert "Changed crypto"

This reverts commit eaf6160a95fe7ebb9a7041e061008f4ed953a447.
Revert "Recovery: TWRP-ify"

This reverts commit 191ff1a254c2491aac6b10b79569ade4cb6e6bb6.