System.Security.Cryptography.CryptographicException: keyset does not exist

Question

When I make x509 certificate to encypt and decypt message, I got some error information and could not fix this problem. Could someone ever happend to solve this bug? thanks.

Answer 1

I believe when using Encrypt and Decrypt it expects a public key for encrypt and a private key for decrypt. So it is failing because you are trying to decrypt without the private key and that causes the exception.

You should really be using SignData method for creating the signature and VerifyData for the verification.