public MailModel VerifyEmail(Outlook.MailItem mailItem)
{
var mail = mailItem.Body ?? mailItem.HTMLBody;
if (Regex.IsMatch(mail, PgpSignedHeader) == false)
{
return null;
}
var context = new CryptoContext(Passphrase);
var crypto = new PgpCrypto(context);
try
{
var valid = crypto.Verify(_encoding.GetBytes(mail));
context = crypto.Context;
var signature = new Signature
{
KeyId = context.SignedByKeyId,
UserId = context.SignedByUserId,
Valid = valid
};
if (mailItem.BodyFormat == Outlook.OlBodyFormat.olFormatHTML)
{
return new HtmlMailModel
{
Signature = signature,
Body = mailItem.HTMLBody
};
}
return new PlainMailModel
{
Signature = signature,
Body = mailItem.Body
};
}
catch (PublicKeyNotFoundException ex) { }
catch (Exception ex)
{
Passphrase = null;
WriteErrorData("VerifyEmail", ex);
ShowErrorBox(ex.Message);
}
return null;
}