static void testdecrypt()
{
//byte[] encryptedArr = {145, 110, 51, 179, 147, 38, 228, 145, 55, 179, 143, 45, 179, 239, 28, 251, 127, 202, 47, 73, 49, 31, 36, 232, 81, 219, 2, 180, 16, 104, 203, 148, 207, 36, 110, 184, 225, 133, 190, 185, 22, 75, 49, 69, 129, 101, 161, 215, 102, 66, 218, 127, 193, 201, 222, 181, 187, 251, 221, 205, 103, 188, 5, 77, 94, 236, 43, 121, 182, 233, 109, 123, 64, 93, 61, 61, 204, 157, 23, 17, 220, 187, 150, 187, 29, 230, 91, 89, 241, 27, 34, 18, 21, 195, 220, 231, 237, 47, 123, 247, 128, 107, 169, 115, 84, 103, 129, 126, 99, 231, 2, 23, 152, 183, 136, 70, 64, 116, 125, 198, 240, 128, 129, 133, 5, 144, 179, 255, 10, 14, 148, 216, 164, 78, 253, 190, 231, 153, 157, 64, 212, 78, 212, 191, 230, 120, 58, 223, 147, 241, 222, 191, 22, 99, 80, 126, 212, 172, 14, 43, 135, 43, 117, 47, 172, 161, 38, 67, 125, 205, 186, 91, 35, 89, 110, 243, 184, 200, 158, 220, 161, 222, 172, 53, 211, 90, 55, 126, 190, 183, 71, 101, 215, 218, 90, 68, 122, 226, 237, 119, 139, 176, 51, 129, 7, 71, 154, 196, 52, 16, 136, 104, 4, 108, 136, 112, 25, 45, 88, 232, 94, 159, 199, 221, 152, 88, 156, 73, 183, 158, 241, 10, 102, 50, 166, 183, 86, 252, 102, 4, 190, 144, 149, 136, 255, 115, 163, 177, 88, 67, 88, 85, 247, 0, 30, 159};
string encryptedStr = "";
encryptedStr = "YrOiK4Efq2oM4Ny0YW7VFnOtkWHpcFg1zHHfxpdEX1k/wbjbMHyBYn6Uo1qB6fcRNmokO1L48fQGfpeyErgWSt/D1pBlffV+QkGNLtApXIShPdOj8uqElP0T8skNTZCUNqsaB5MPwFsUDiuynimqikM6tBNdLss+z81LbxARUlao/yN112GoxQQ4wpnaDk/eOA51J+5aZb2jMssHwAFx3M3K8AJmUv4qBN8lOAnahd3QnDgaxk7gNydjKyVi1eRGHYxwQVNwMsV1we7EFDMBICG97i4GmWrP2BkrXs8J09osP2O++TIVZrxYpEGwwrRmtno1bBCfySWLNuxd33jwcg==";
encryptedStr = "SnGp1BBb0fU7poFpM5Z0oD0YtfYZizU97GxUF9pn58yGEhpTdJ2vWy/NrhYMPflf4yym77zUyNVhDaOZ+1Q2H4imkiXa5q9DsBRN+dl5dVvosEse3OSyOTEbxn4AcrreWGhKTJ+/3mEhRotUE/rUuWskXKzSA+WQ0nSGUxSG/Rw0yaCeWsa1MU3UM0ugxxxd2gExY+K39+4nXUzNMv+H4XniTvmmUI7k8TEGAsZujwDsU9Oh+MbMtH8nlTu+yvfS++/dDTX9bFmpbkkH7FgbVvKcoICXsI5UfTATfRL4LkzdipO8VJNiPKT8TkgZyIJC/m1daLGAmIs+fM98rWm9yg==";
//DECRYPT
Chilkat.PrivateKey privkey1 = new Chilkat.PrivateKey();
bool success = privkey1.LoadPem(mykey);
Chilkat.Rsa rsa4 = new Chilkat.Rsa();
success = rsa4.UnlockComponent("HAFSJORSA_K36nxU3n1Yui");
rsa4.EncodingMode = "base64";
rsa4.Charset = "ANSI";
rsa4.LittleEndian = true;
rsa4.OaepPadding = false;
success = rsa4.ImportPrivateKey(privkey1.GetXml());
bool usePrivateKey = true;
//byte[] decryptedArr = rsa4.DecryptBytes(encryptedArr, usePrivateKey);
string decryptedStr = rsa4.DecryptStringENC(encryptedStr, usePrivateKey);
}
/// <summary>
///
/// </summary>
/// <param name="StrToDecrypt"></param>
/// <param name="EncodingMode"></param>
/// <returns></returns>
public override string Decrypt(string StrToDecrypt, string EncodingMode, string RSAPrivateKey)
{
try
{
// Now decrypt:
Chilkat.Rsa rsaDecryptor = new Chilkat.Rsa();
/// bool for success
bool success;
/// unlock component
success = rsaDecryptor.UnlockComponent("VIENTORSA_TbpfVVr01Or6");
/// we encode in 64 base bits
rsaDecryptor.EncodingMode = EncodingMode;
///rsa import private
rsaDecryptor.ImportPrivateKey(RSAPrivateKey);
/// decrypted string
string decryptedStr;
///we now decript the string
decryptedStr = rsaDecryptor.DecryptStringENC(StrToDecrypt, true);
/// return the string
return decryptedStr;
}
catch
{
return null;
}
finally
{
GC.Collect();
}
}
private string DecryptWithApplicationCertPrivateKey(string encryptedkey)
{
var rsaDecryptor = new Chilkat.Rsa {
EncodingMode = "hex"
};
rsaDecryptor.ImportPrivateKey(CertificatePrivateKey);
var applicationKey = rsaDecryptor.DecryptStringENC(encryptedkey, true);
return(applicationKey);
}
public string GetSymmetricKeyForUser(string userReference)
{
var userKeys = GetUserKeyPair(userReference);
var rsaDecryptor = new Chilkat.Rsa {
EncodingMode = EncodingMode
};
rsaDecryptor.ImportPublicKey(userKeys.PublicKey);
var symmetricKey = rsaDecryptor.DecryptStringENC(userKeys.EncryptedSymetricKey, false);
return(symmetricKey);
}
public void EncryptApplicationKeyFromCryptoServiceCert()
{
RegisterChilKat();
X509Certificate2 theCert = null;
var store = new X509Store(StoreName.My, StoreLocation.LocalMachine);
store.Open(OpenFlags.ReadOnly);
foreach (var certificate in store.Certificates)
{
//TODO's
Console.WriteLine(certificate.FriendlyName);
if (certificate.FriendlyName == "CryptoServiceCert")
{
theCert = certificate;
}
}
var privateKey = theCert?.PrivateKey?.ToXmlString(true);
var publicKey = theCert?.PrivateKey?.ToXmlString(true);
var sampleText = "+oPDU29Bv2hfUZ8fZozMGAVYUZjp1wdwDs42JY213tA=";
var rsaEncryptor = new Chilkat.Rsa {
EncodingMode = "hex"
};
rsaEncryptor.ImportPublicKey(publicKey);
var encryptedText = rsaEncryptor.EncryptStringENC(sampleText, false);
Console.WriteLine($"Encrypted Value: [{encryptedText}]");
var rsaDecryptor = new Chilkat.Rsa {
EncodingMode = "hex"
};
rsaDecryptor.ImportPrivateKey(privateKey);
var decryptedText = rsaDecryptor.DecryptStringENC(encryptedText, true);
}
/// <summary>
/// Decrypt using a Given Private Key
/// </summary>
/// <param name="StringToDecrypt">w to Decrypt</param>
/// <param name="PrivateKey"></param>
/// <param name="EncodingMode">base64, hex</param>
/// <returns></returns>
public static string Decrypt(string StrToDecrypt, string PrivateKey, string EncodingMode)
{
try
{
/// First we get the RSA Public Key
string RSAPrivateKey = PrivateKey;
/// rsa object
Chilkat.Rsa rsa = new Chilkat.Rsa();
/// bool for success
bool success;
/// unlock component
success = rsa.UnlockComponent("VIENTORSA_TbpfVVr01Or6");
/// private key
string privateKey;
///we now export the private key
privateKey = rsa.ExportPrivateKey();
// Now decrypt:
Chilkat.Rsa rsaDecryptor = new Chilkat.Rsa();
/// we encode in 64 base bits
rsaDecryptor.EncodingMode = EncodingMode;
///rsa import private
rsaDecryptor.ImportPrivateKey(RSAPrivateKey);
/// decrypted string
string decryptedStr;
///we now decript the string
decryptedStr = rsaDecryptor.DecryptStringENC(StrToDecrypt, true);
/// return the string
return decryptedStr;
}
catch
{
return null;
}
finally
{
GC.Collect();
}
}
public VerificationResult <string> VerifySignature(DigitalSignature <string> signature)
{
var verificationResults = new VerificationResult <string>();
var hashManager = new HashManager();
var envelope = DecryptSignedContent <string>(signature.SignedContent, signature.SignatoryReference);
if (envelope == null)
{
verificationResults.SignatoryMatchedToSignature = false;
return(verificationResults);
}
var hashCurrentBody = hashManager.HashContent(envelope.Body);
var publicKey = KeyStoreAdapter.GetPublicKeyForUser(signature.SignatoryReference);
// Decrypt hash with public key to ensure there is no tampering and content is still the same
var rsaDecryptor = new Chilkat.Rsa {
EncodingMode = EncodingMode
};
rsaDecryptor.ImportPublicKey(publicKey);
var decryptedoriginalHash = rsaDecryptor.DecryptStringENC(envelope.Header.EncryptedBodyHashSignature, false);
var signitureMatch = hashCurrentBody == decryptedoriginalHash;
verificationResults.IpAddress = envelope.Body?.IpAddress;
verificationResults.SignatoryEmailAddress = envelope.Body?.EmailAddress;
verificationResults.SignatoryMatchedToSignature = true;
verificationResults.SignedContentMatchesToSignature = signitureMatch;
verificationResults.ExpectedContent = signature.OriginalContent;
verificationResults.SignedContent = envelope?.Body?.Content;
return(verificationResults);
}
public static void performRSA(string text)
{
Chilkat.Rsa rsa = new Chilkat.Rsa();
bool success = rsa.UnlockComponent("Anything for 30-day trial");
if (success != true)
{
Console.WriteLine("RSA component unlock failed");
return;
}
// This example also generates the public and private
// keys to be used in the RSA encryption.
// Normally, you would generate a key pair once,
// and distribute the public key to your partner.
// Anything encrypted with the public key can be
// decrypted with the private key. The reverse is
// also true: anything encrypted using the private
// key can be decrypted using the public key.
// Generate a 1024-bit key. Chilkat RSA supports
// key sizes ranging from 512 bits to 4096 bits.
success = rsa.GenerateKey(1024);
if (success != true)
{
Console.WriteLine(rsa.LastErrorText);
return;
}
// Keys are exported in XML format:
string publicKey = rsa.ExportPublicKey();
string privateKey = rsa.ExportPrivateKey();
string plainText = "Encrypting and decrypting should be easy!";
plainText = text;
// Start with a new RSA object to demonstrate that all we
// need are the keys previously exported:
Chilkat.Rsa rsaEncryptor = new Chilkat.Rsa();
// Encrypted output is always binary. In this case, we want
// to encode the encrypted bytes in a printable string.
// Our choices are "hex", "base64", "url", "quoted-printable".
rsaEncryptor.EncodingMode = "hex";
// We'll encrypt with the public key and decrypt with the private
// key. It's also possible to do the reverse.
success = rsaEncryptor.ImportPublicKey(publicKey);
bool usePrivateKey = false;
string encryptedStr = rsaEncryptor.EncryptStringENC(plainText, usePrivateKey);
//Console.WriteLine(encryptedStr);
// Now decrypt:
Chilkat.Rsa rsaDecryptor = new Chilkat.Rsa();
rsaDecryptor.EncodingMode = "hex";
success = rsaDecryptor.ImportPrivateKey(privateKey);
usePrivateKey = true;
string decryptedStr = rsaDecryptor.DecryptStringENC(encryptedStr, usePrivateKey);
//Console.WriteLine(decryptedStr);
}
