|
public ExportParameters ( bool includePrivateParameters ) : |
||
| includePrivateParameters | bool | |
| return | ||
public override RSAParameters ExportParameters (bool includePrivateParameters)
{
if (m_disposed)
throw new ObjectDisposedException (Locale.GetText ("Keypair was disposed"));
if (!keypairGenerated)
GenerateKeyPair ();
RSAParameters param = new RSAParameters ();
param.Exponent = e.GetBytes ();
param.Modulus = n.GetBytes ();
if (includePrivateParameters) {
// some parameters are required for exporting the private key
if (d == null)
throw new CryptographicException ("Missing private key");
param.D = d.GetBytes ();
// hack for bugzilla #57941 where D wasn't provided
if (param.D.Length != param.Modulus.Length) {
byte[] normalizedD = new byte [param.Modulus.Length];
Buffer.BlockCopy (param.D, 0, normalizedD, (normalizedD.Length - param.D.Length), param.D.Length);
param.D = normalizedD;
}
// but CRT parameters are optionals
if ((p != null) && (q != null) && (dp != null) && (dq != null) && (qInv != null)) {
// and we include them only if we have them all
int length = (KeySize >> 4);
param.P = GetPaddedValue (p, length);
param.Q = GetPaddedValue (q, length);
param.DP = GetPaddedValue (dp, length);
param.DQ = GetPaddedValue (dq, length);
param.InverseQ = GetPaddedValue (qInv, length);
}
}
return param;
}
private void EncryptDecrypt (string msg, RSAManaged rsa)
{
RSAParameters param = rsa.ExportParameters (false);
byte[] data = { 0xFF, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13 };
// we don't need the private key to encrypt
RSAManaged pubkey = new RSAManaged ();
pubkey.ImportParameters (param);
byte[] enc = pubkey.EncryptValue (data);
byte[] dec = rsa.DecryptValue (enc);
// note: the decrypted value is now right padded with zeros
Assert.IsTrue (BitConverter.ToString (dec).EndsWith (BitConverter.ToString (data)), msg);
}