Error Occured While Decoding Oaep Padding
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Exception Error Occurred While Decoding Oaep Padding
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System.security.cryptography.cryptographicexception Error Occurred While Decoding Oaep Padding
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Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Error occurred while decoding OAEP padding up vote 11 down vote favorite 1 in continuation of the http://stackoverflow.com/questions/949907/error-occurred-while-decoding-oaep-padding question I have modified my code and now i error occurred while converting the file am trying this code 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(""); Response.Write(""); Response.Write("
Encrypting the string \"HelloThere\" with the public Key:
"); 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.GetSt
Common Language Runtime Internals and Architecture Question 1 error occurred while attempting to run privileged commands Sign in to vote while doing asymetic encryption method I error occurred while decoding oaep padding rsacryptoserviceprovider am using public key of a digital signature for encrypting. and private key rsa oaep padding c# for decrypting. I am able to encrypt the data successfully. but while decrypting i am getting the error as Error occurred while decoding http://stackoverflow.com/questions/954416/error-occurred-while-decoding-oaep-padding OAEP padding.my piece of code is #region Test Encryption public void a() { using (var rsa = new RSACryptoServiceProvider()) { // This String consists only Public Key Information String publicKeyOnly = rsa.ToXmlString(false); // This String consists both Private/Public Key information String publicPrivate = rsa.ToXmlString(true); } } https://social.msdn.microsoft.com/Forums/vstudio/en-US/16420376-c0a5-4e14-91e0-a47e26dc00fa/error-occurred-while-decoding-oaep-padding?forum=clr //encrypt public byte[] b(String publicKeyOnly) { String s = "
encrypted string.Decrypt: http://beachbc.blogspot.com/2008/12/rsa-in-c-net.html takes an encrypted string and returns a plain text http://www.codeproject.com/Questions/66541/Error-occurred-while-decoding-OAEP-padding string.1)Server:Generate a RSA public and private key.Pass the public key in plain text to the client2)Client:Pass a plain string to RSAObjectPass encrypted string from RSAObject to Server.3)Server:Pass encrypted string to RSAObjectUse decrypted string from RSAObject.PROBLEMS:My error occurred origional code for encrypting and decrypting data:public string Encrypt(string plainText) { try { byte[] plainData = Encoding.UTF32.GetBytes(plainText); byte[] encryptedData = crypto.Encrypt(plainData, true); return Encoding.UTF32.GetString(encryptedData); } catch (Exception ex) { Console.WriteLine(ex.ToString()); return ""; } } public string Decrypt(string encryptedText) { try { byte[] encryptedData error occurred while = Encoding.UTF32.GetString(encryptedText); byte[] plainData = crypto.Decrypt(encryptedData, true); return Encoding.UTF32.GetString(plainData); } catch (Exception ex) { Console.WriteLine(ex.ToString()); return ""; } }All I would get during decryption from crypto, a RSACryptoServiceProvider object, was one of two exceptions:Bad LengthError occurred while decoding OAEP padding.After reading up more on RSA I discovered that a UTF32(32bit) can't properly handle the data returned by crypto.Encrypt, therefore some of my bytes were being changed in the conversion process to UTF32, and therefor could not be decrypted. use Convert.ToBase64String(string)SOLUTION:Encrypt method needs to convert to a 64bit string.Decrypt method needs to convert from a 64bit string.fixed and working source code:public string Encrypt(string plainText) { try { byte[] plainData = Encoding.UTF32.GetBytes(plainText); byte[] encryptedData = crypto.Encrypt(plainData, true); return Convert.ToBase64String(encryptedData); } catch (Exception ex) { Console.WriteLine(ex.ToString()); return ""; } } public
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