private static string GenerateDkimSignature(Email email, Encoding encoding, IPrivateKeySigner privateKeySigner, string[] headersToSign)
{
if (email == null)
{
throw new ArgumentNullException("email");
}
if (email.Headers == null)
{
throw new ArgumentException("email headers property is null");
}
var headers = DkimCanonicalizer.CanonicalizeHeaders(email.Headers, dkimHeaderCanonicalization, true, headersToSign);
// assumes signature ends with "b="
return(Convert.ToBase64String(privateKeySigner.Sign(encoding.GetBytes(headers), dkimSigningAlgorithm)));
}
private static string DkimSignBody(string body, Encoding encoding, IPrivateKeySigner privateKeySigner)
{
var cb = DkimCanonicalizer.CanonicalizeBody(body, dkimBodyCanonicalization);
return(Convert.ToBase64String(privateKeySigner.Hash(encoding.GetBytes(cb), dkimSigningAlgorithm)));
}