public static string getEncryptedMessage(string msg, RSAKeyValue key)
{
string[] segments = getSegments(msg);
string[] encryptedSegments = new string[segments.Length];
for (int i = 0; i < segments.Length; i++)
{
encryptedSegments[i] = Convert.ToBase64String(RSAEncrypt(Encoding.UTF8.GetBytes(segments[i]), key));
}
string JSON = JSONManager.serialize(encryptedSegments);
return(JSON);
}
public static string getPublicKey()
{
CspParameters param = new CspParameters();
param.KeyContainerName = "VC_RSA_KEY";
//Create a new instance of RSACryptoServiceProvider.
using (RSACryptoServiceProvider RSA = new RSACryptoServiceProvider(2048, param))
{
string xmlKey = RSA.ToXmlString(false);
RSAKeyValue key = XMLManager.deserialize <RSAKeyValue>(xmlKey);
Console.WriteLine("MOD:" + Convert.FromBase64String(key.Modulus).Length *8);
string jsonKey = JSONManager.serialize(key);
return(jsonKey);
}
}
public static byte[] RSAEncrypt(byte[] toEncrypt, RSAKeyValue key)
{
byte[] encrypted;
RSAParameters parameters = new RSAParameters();
parameters.Modulus = Convert.FromBase64String(key.Modulus);
parameters.Exponent = Convert.FromBase64String(key.Exponent);
using (RSACryptoServiceProvider RSA = new RSACryptoServiceProvider(2048))
{
try
{
RSA.ImportParameters(parameters);
encrypted = RSA.Encrypt(toEncrypt, true);
}
finally
{
RSA.PersistKeyInCsp = false;
}
}
return(encrypted);
}
