Import Public RSA Key From Certificate

Question

Our customer has their public RSA key stored in a certificate.

We need this key hardcoded in our WinRT app, so we can encrypt client-side. However, we\'re having issues

Answer 1

Two things:

1. The argument to ImportPublicKey key is an IBuffer. The easiest way to get this is using the ToBuffer extension method for a byte[].
2. Use the override of ImportPublicKey that takes both an IBuffer and a CryptographicPublicKeyBlobType, specifically CryptographicPublicKeyBlobType.X509SubjectPublicKeyInfo. Pass in the subject public key info field from the certificate.