如何使用MimeKit对字符串进行公钥加密和私钥解密？
如何使用MimeKit对字符串进行公钥加密和私钥解密？
提问于 2020-12-23 12:32:05
我很难找到一个解决方案，如何使用公钥证书加密字符串，并使用Mimekit使用私钥证书解密它。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，我将在加密之前想要加密的字符串写入到文件中。我想要做的是使用MimeKit直接加密字符串。我对MimeKit的使用还很陌生。如果有人知道我如何做到这一点，这将是一个很大的帮助。
回答 1
Stack Overflow用户
回答已采纳
发布于 2020-12-24 06:43:24
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;
}
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/65419068
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