//Encrypt the input file and the symmetric key, save them as a file and return the DigitalEnvelopeEncrypted object
//containing the encrypted message and the encrypted symmetric key.
public DigitalEnvelopeEncrypted CreateEnvelope()
{
DigitalEnvelopeEncrypted = new DigitalEnvelopeEncrypted
(
//Encrypt the input file.
symmetricAlgorithm.Encrypt(input),
//Encrypt the symmetric key.
rsaAlgorithm.RSAEncrypt(symmetricAlgorithm.algorithm.Key, true)
);
SaveEnvelope();
return(DigitalEnvelopeEncrypted);
}
//Load envelope file.
private void LoadEnvelope(string path)
{
FileIO fileInput = new FileIO(new StreamReader(path ?? InitialParameters.basePath + InitialParameters.envelopeFilePath));
fileInput.LoadFile();
string[] methods = fileInput.Method.Split('-');
symmetricAlgorithmName = methods[0];
rsaName = methods[1];
cipherName = fileInput.Cipher;
initializationVector = Convert.FromBase64String(fileInput.InitializationVector);
DigitalEnvelopeEncrypted = new DigitalEnvelopeEncrypted
(
Convert.FromBase64String(fileInput.EnvelopeData),
Convert.FromBase64String(fileInput.EnvelopeCryptKey)
);
}
