RSA CRT requires public exponent starting with 1.77 for raw RSA operation

[CardContact]

While updating BC in OpenSCDP we see raw RSA operations fail with private keys in CRT format.

Starting with 1.77 a NPE 'Cannot read field "signum" because "exponent" is null' is thrown if no
public exponent in present in the CRT structure.

I suspect that c62e5d0 is causing this. The code seems to check if a public exponent is present, but maybe there is a check missing.

[dghgit]

Try 1.83, you may want to use org.bouncycastle.rsa.no_lenstra_check=true for performance reasons as well.

Let us know how it goes.

[CardContact]

1.83 shows the same issue, but with org.bouncycastle.rsa.no_lenstra_check=true it disappears.