Extract public key from certificate

Question

Is there a way to extract the public key from a certificate using C#? I have a certificate file with .crt extension.

Answer 1

Use:

certificate = new X509Certificate2("server.crt", "secret_password");
byte[] publicKey = certificate.PublicKey.EncodedKeyValue.RawData;

now the 'publicKey' byte array is the ASN.1-encoded representation of the public key value.