我正在使用Mime工具包发送邮件和加密。代码是
public void SendMail(string filePath)
{
var message = new MimeMessage();
message.From.Add(new MailboxAddress("Test", "xxx@gmail.com"));
message.To.Add(new MailboxAddress("Test Mail", "xx@xx.xx"));
message.To.Add(new MailboxAddress("Test", "xxx@xx.com"));
message.Subject = "TEST: ";
var subject = "TEST:";
var body = new TextPart("plain")
{
Text = "Sample comments"
};
var attachment = new MimeKit.MimePart("multipart/related", "txt")
{
Content = new MimeContent(File.OpenRead(filePath), ContentEncoding.Default),
ContentDisposition = new ContentDisposition(ContentDisposition.Attachment),
ContentTransferEncoding = ContentEncoding.Base64,
FileName = Path.GetFileName(filePath)
};
var multipart = new Multipart("mixed");
multipart.Add(body);
multipart.Add(attachment);
message.Body = multipart;
var certificateFile = @"E:\RESDE_RSA.pfx";
var certificate = new X509Certificate2(certificateFile,"", X509KeyStorageFlags.Exportable);
var recipientCollection = new CmsRecipientCollection();
var bountyRecipientCertificate = DotNetUtilities.FromX509Certificate(certificate);
var recipient = new CmsRecipient(bountyRecipientCertificate);
recipient.EncryptionAlgorithms = new EncryptionAlgorithm[] { EncryptionAlgorithm.Aes256 };
recipientCollection.Add(recipient);
using (var client = new MailKit.Net.Smtp.SmtpClient())
{
client.Connect("smtp.gmail.com", 25, false);
client.Authenticate("xx@gmail.com", "password");
client.Send(message);
client.Disconnect(true);
}
}
邮件已成功发送,但是邮件的加密和签名不正确。对于如何解密和签名邮件,我没有任何解决方案。 我正在使用MVC应用程序。
答案 0 :(得分:1)
首先,这是不正确的:
var attachment = new MimeKit.MimePart("multipart/related", "txt")
这将导致:
Content-Type: multipart/related/txt
那是完全错误的哑剧类型。
不知道要做什么,但是绝对不应该是multipart
的任何东西。
现在您要回答的主要问题是为什么您的邮件未加密。
简单:您正在执行获取CMS收件人列表(看起来还可以)的前几步,但是对他们却不做任何事情。
var certificateFile = @"E:\RESDE_RSA.pfx";
var certificate = new X509Certificate2(certificateFile,"", X509KeyStorageFlags.Exportable);
var recipientCollection = new CmsRecipientCollection();
var bountyRecipientCertificate = DotNetUtilities.FromX509Certificate(certificate);
var recipient = new CmsRecipient(bountyRecipientCertificate);
recipient.EncryptionAlgorithms = new EncryptionAlgorithm[] { EncryptionAlgorithm.Aes256 };
recipientCollection.Add(recipient);
// now you need to actually encrypt
using (var ctx = new TemporarySecureMimeContext ()) {
var encrypted = ApplicationPkcs7Mime.Encrypt (ctx, recipientCollection, multipart);
message.Body = encrypted;
}