private void envelopeDecryptStartBtn_Click(object sender, EventArgs e)
{
var ready = true;
if (string.IsNullOrWhiteSpace(envelopeDecryptEnvelope.Text))
{
MessageBox.Show("Choose a file for decryption", "Choose envelope", MessageBoxButtons.OK,
MessageBoxIcon.Warning);
ready = false;
}
if (string.IsNullOrWhiteSpace(envelopeDecryptPrivate.Text))
{
envelopeDecryptPrivate.Text = _initialDirectory + "RSA_private.txt";
}
if (string.IsNullOrWhiteSpace(envelopeDecryptPlain.Text))
{
envelopeDecryptPlain.Text = _initialDirectory + "envelope_decrypted.txt";
}
if (ready)
{
DigitalEnvelope.ReadEnvelope(envelopeDecryptEnvelope.Text, int.Parse(rsaKeysSize.Text),
envelopeDecryptPrivate.Text, envelopeDecryptPlain.Text);
}
}
private void envelopeEncryptStart_Click(object sender, EventArgs e)
{
var ready = true;
if (string.IsNullOrWhiteSpace(envelopeEncryptPlain.Text))
{
MessageBox.Show("Choose a file for encryption", "Choose plain text", MessageBoxButtons.OK,
MessageBoxIcon.Warning);
ready = false;
}
if (string.IsNullOrWhiteSpace(envelopeEncryptPublic.Text))
{
envelopeEncryptPlain.Text = _initialDirectory + "RSA_public.txt";
}
if (string.IsNullOrWhiteSpace(rsaEncryptCipherFile.Text))
{
envelopeEncryptEnvelope.Text = _initialDirectory + "envelope.txt";
}
if (ready)
{
DigitalEnvelope.CreateEnvelope(envelopeEncryptPlain.Text, int.Parse(rsaKeysSize.Text),
envelopeEncryptPublic.Text, envelopeEncryptEnvelope.Text);
}
}
public static void CreateSignedEnvelope(string plainTextFile, int keySize, string receiverPublicKeyFilePath,
string senderPrivateKeyFilePath, string outputFilePath)
{
var tmpEnvelopeFilePath = Environment.CurrentDirectory + @"\Files\tmp\envelope_tmp.txt";
DigitalEnvelope.CreateEnvelope(plainTextFile, keySize, receiverPublicKeyFilePath,
tmpEnvelopeFilePath);
DigitalSignature.CreateEnvelopeSignature(tmpEnvelopeFilePath, keySize, senderPrivateKeyFilePath,
outputFilePath);
}
public static bool OpenSignedEnvelope(string signedEnvelopeFilePath, int keySize,
string receiverPrivateKeyFilePath, string senderPublicKeyFilePath, string outputFilePath)
{
var verified = DigitalSignature.VerifyEnvelopeSignature(signedEnvelopeFilePath, keySize,
senderPublicKeyFilePath);
var file = FileOperations.ReadFromTextFile(signedEnvelopeFilePath);
var fileSplit = file.Split(new char[0], StringSplitOptions.RemoveEmptyEntries);
var keyBytes = Converter.HexStringToBytes(fileSplit[4]);
var messageBytes = Converter.HexStringToBytes(fileSplit[6]);
DigitalEnvelope.ReadEnvelope(keyBytes, messageBytes, keySize, receiverPrivateKeyFilePath, outputFilePath);
return(verified);
}
