[strongSwan] strongswan 5.X windows, ikev1, cert

[Martin Willi]

Hi Pawel,

> charon: 01[ENC] certificate encoding ENC_PKCS7_WRAPPED_X509 not supported

Charon currently doesn't handle these exotic PKCS#7 wrapped certificates
sent by XP clients using certificate authentication.

It shouldn't be to hard to implement it, though, as we have the PKCS#7
functionality. I hope to find some time adding support for it, but
patches are welcome.

Regards
Martin