解码 OAEP 填充时出错 [英] Error occurred while decoding OAEP padding
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问题描述
使用 RSACryptoServiceProvider.Decrypt
解密文本时,出现错误:
While decrypting text using RSACryptoServiceProvider.Decrypt
, I am getting the error:
解码 OAEP 填充时出错.
Error occurred while decoding OAEP padding.
这是我的代码:
CspParameters cspParam = new CspParameters();
cspParam = new CspParameters();
cspParam.Flags = CspProviderFlags.UseMachineKeyStore;
clsCertificates cc = new clsCertificates();
string a = "";
cc.OpenStoreIE(ref a);
cc.SetProperties();
X509Certificate2 cert = new X509Certificate2();
cert = cc.x509_2Cert;
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(cspParam);
//to gentrate private and public keys from the certificate
rsa.FromXmlString(cert.PublicKey.Key.ToXmlString(false));
String publicKey = rsa.ToXmlString(false); // gets the public key
String privateKey = rsa.ToXmlString(true); // gets the private key working if paramter is false if true give error key is not valid for use in specified state
Response.Write("<Textarea rows=10 cols=100>PUBLIC: " + publicKey + "</TextArea>");
Response.Write("<Textarea rows=10 cols=100>PRIVATE: " + privateKey + "</Textarea>");
Response.Write("<BR>Encrypting the string "HelloThere" with the public Key:<BR>");
String str = "HelloThere";
RSACryptoServiceProvider RSA2 = new RSACryptoServiceProvider(cspParam);
//---Load the Public key---
RSA2.FromXmlString(publicKey);
//working with the folowing line instead of above but i need the keys of he certificte
//RSA2.ToXmlString(true);
Byte[] EncryptedStrAsByt = RSA2.Encrypt(System.Text.Encoding.Unicode.GetBytes(str), true);
String EncryptedStr = System.Text.Encoding.Unicode.GetString(EncryptedStrAsByt);
Response.Write("<Textarea rows=10 cols=100>Encrypted String: " + EncryptedStr + "</Textarea>");
Response.Write("<BR>Decrypting the Encrypted String with the Private key:<BR>");
RSACryptoServiceProvider RSA3 = new RSACryptoServiceProvider(cspParam);
//---Load the Private key---
RSA3.FromXmlString(privateKey);
//working with the folowing line instead of above but i need the keys of he certificte
//RSA3.ToXmlString(true);
Byte[] DecryptedStrAsByt = RSA3.Decrypt(EncryptedStrAsByt, true );//Error if true then error is error occured while decoding the OAE$P padding and if false then error is bad key i am using windows xp so it should be true.
String DecryptedStr = System.Text.Encoding.Unicode.GetString(DecryptedStrAsByt);
Response.Write("<Textarea rows=10 cols=100>Decrypted String: " + DecryptedStr + "</Textarea>");
如果我没有使用我的数字证书的密钥,上面的方法是有效的.但如果密钥来自数字证书,我会收到 OAEP 填充错误.
The above is works if I am not using the keys of my digital certificate. but if the keys are from the digital certificate, I get the OAEP padding error.
注意:这个问题是解码OAEP填充时出错一个>问题
推荐答案
一个常见的错误是尝试使用公钥解密.
A common mistake is to try to decrypt using the public key.
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