Android O triggers IllegalBlockException

[rogerhu]

See: https://issuetracker.google.com/issues/72270356

Workaround:

• https://issuetracker.google.com/issues/36708951#comment15

• https://stackoverflow.com/questions/46042127/android-8-0-illegalblocksizeexception-when-using-rsa-ecb-oaepwithsha-512andmgf1/46159066#46159066

[rogerhu]

Demo project here: https://github.com/rogerhu/VaultBrokenDemo/blob/master/app/src/main/java/hearsaysystems/com/vault/MainActivity.kt

[rogerhu]

Can someone take a look? The problem has been reported in Android O and the workaround uses the same approach as discussed in https://issuetracker.google.com/issues/36708951#comment15

[rogerhu]

See: https://issuetracker.google.com/issues/36708951#comment21