public byte[] DecryptDataWithRsaFile(string rsaPrivateParamsFilePath, string fileKey, byte[] encryptData)
{
if (!File.Exists(rsaPrivateParamsFilePath))
{
return(null);
}
RsaParametersSerializable rsaParameters;
Key = fileKey;
BinaryFormatter formatter = new BinaryFormatter();
try
{
DecrypFile(rsaPrivateParamsFilePath, fileKey);
using (FileStream fs = new FileStream(rsaPrivateParamsFilePath, FileMode.Open))
{
rsaParameters = (RsaParametersSerializable)formatter.Deserialize(fs);
}
EncryptFile(rsaPrivateParamsFilePath, fileKey);
}
catch (Exception)
{
return(null);
}
return(RsaCypher.RsaDecrypt(encryptData, rsaParameters.RsaParameters, false));
}
public byte[] EncryptDataWithRsaFile(string rsaPublicParamsFilePath, byte[] encryptData)
{
if (!File.Exists(rsaPublicParamsFilePath))
{
return(null);
}
RSAParameters rsaParameters;
BinaryFormatter formatter = new BinaryFormatter();
try
{
using (FileStream fs = new FileStream(rsaPublicParamsFilePath, FileMode.Open))
{
rsaParameters = (RSAParameters)formatter.Deserialize(fs);
}
}
catch (Exception)
{
return(null);
}
return(RsaCypher.RsaEncrypt(encryptData, rsaParameters, false));
}