private void ExecuteRSAMessage(RSAMessage message)
{
if (message.RSAAction == RSAAction.Encrypt)
{
AreActiveRSAEncryptedData = true;
}
SetRSAStatus(message.RSAAction);
}
public static RSAMessage Sign(PrivateKey privateKey, string message)
{
var hash = GetHash(message);
var sigma = BigInteger.ModPow(new BigInteger(hash), privateKey.D, privateKey.N);
var ret = new RSAMessage(message, sigma);
return(ret);
}
public static bool VrfyFile(PublicKey publicKey, StreamReader sr)
{
var str = sr.ReadToEnd();
var split = str.Split("@%@");
RSAMessage message = new RSAMessage(split[1], BigInteger.Parse(split[0]));
return(Vrfy(publicKey, message));
}
public static bool Vrfy(PublicKey publicKey, RSAMessage message)
{
var hash = Signer.GetHash(message.Message);
var hashCheck = BigInteger.ModPow(message.Sigma, publicKey.E, publicKey.N).ToByteArray();
var hashInt = new BigInteger(hash);
var hashCheckInt = new BigInteger(hashCheck);
return(hashInt.Equals(hashCheckInt));
}
private void ExecuteMessage(RSAMessage message)
{
switch (message.RSAAction)
{
case RSAAction.Generate:
var bothKeyParameters = cryptographicService.GenerateKeyParameters();
privateAndPublicKeyParameters = bothKeyParameters.PrivateKeyParameters;
publicKeyParameters = bothKeyParameters.PublicKeyParameters;
IsActivePrivateKey = true;
IsActivePublicKey = true;
SetKeyParametersBase();
message.RSAAction = RSAAction.None;
break;
case RSAAction.OpenPrivateKey:
privateAndPublicKeyParameters = rsaSerializationService.DeserializeKey(message.Path);
IsActivePrivateKey = true;
SetKeyParametersBase();
message.RSAAction = RSAAction.None;
break;
case RSAAction.OpenPublicKey:
publicKeyParameters = rsaSerializationService.DeserializeKey(message.Path);
IsActivePublicKey = true;
SetKeyParametersBase();
message.RSAAction = RSAAction.None;
break;
case RSAAction.OpenEncryptedData:
encryptedData = rsaSerializationService.Deserialize(message.Path);
EncryptedText = Encoding.UTF8.GetString(encryptedData);
AreActiveEncryptedData = true;
SetKeyParametersBase();
message.RSAAction = RSAAction.None;
break;
case RSAAction.SavePublicKey:
rsaSerializationService.SerializeKey(publicKeyParameters, message.Path);
message.RSAAction = RSAAction.None;
break;
case RSAAction.SavePrivateAndPublicKey:
rsaSerializationService.SerializeKey(privateAndPublicKeyParameters, message.Path);
message.RSAAction = RSAAction.None;
break;
case RSAAction.SaveEncryptedData:
rsaSerializationService.Serialize(encryptedData, message.Path);
message.RSAAction = RSAAction.None;
break;
}
}
public HashMessageDto(RSAMessage hash)
{
Message = hash.Message;
Sigma = hash.Sigma.ToString();
}
