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[英]How to encrypt data using a public RSA key? And decrypt with the private key?
[英]How to encrypt string with public key and decrypt using private key using MimeKit?
我很难寻找有关如何使用公钥证书加密字符串并使用 Mimekit 使用私钥证书对其进行解密的解决方案。 这是我使用公钥证书加密文本文件的代码:
public string encryptFile(string filename)
{
var certificate2 = new X509Certificate2(Path.Combine(HttpContext.Current.Request.PhysicalApplicationPath, /Sample.crt));
MimeEntity body;
using (var content = new MemoryStream(File.ReadAllBytes(filename)))
{
var part = new MimePart(MimeTypes.GetMimeType(filename))
{
ContentDisposition = new ContentDisposition(ContentDisposition.Attachment),
ContentTransferEncoding = ContentEncoding.Binary,
FileName = Path.GetFileName(filename),
Content = new MimeContent(content)
};
var recipient = new CmsRecipient(certificate2)
{
EncryptionAlgorithms = new EncryptionAlgorithm[] { EncryptionAlgorithm.TripleDes }
};
var recipients = new CmsRecipientCollection();
recipients.Add(recipient);
using (var ctx = new TemporarySecureMimeContext())
body = ApplicationPkcs7Mime.Encrypt(ctx, recipients, part);
}
string response = body.ToString();
return response;
}
但是使用这种方式,我在加密之前将要加密的字符串写入文件。 我想做的是使用 MimeKit 直接加密字符串。 我只是使用 MimeKit 的新手。 如果有人知道我该怎么做,那将是一个很大的帮助。
public string EncryptString(string value)
{
var certificate2 = new X509Certificate2(Path.Combine(HttpContext.Current.Request.PhysicalApplicationPath, /Sample.crt));
MimeEntity body;
using (var content = new MemoryStream(Encoding.UTF8.GetBytes (value)))
{
var part = new MimePart(MimeTypes.GetMimeType(filename))
{
ContentDisposition = new ContentDisposition(ContentDisposition.Attachment),
ContentTransferEncoding = ContentEncoding.Binary,
FileName = Path.GetFileName(filename),
Content = new MimeContent(content)
};
var recipient = new CmsRecipient(certificate2)
{
EncryptionAlgorithms = new EncryptionAlgorithm[] { EncryptionAlgorithm.TripleDes }
};
var recipients = new CmsRecipientCollection();
recipients.Add(recipient);
using (var ctx = new TemporarySecureMimeContext())
body = ApplicationPkcs7Mime.Encrypt(ctx, recipients, part);
}
using (var memory = new MemoryStream ()) {
body.WriteTo (memory);
string response = Encoding.UTF8.GetString (memory.ToArray ());
return response;
}
}
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