| public GenerateDerivedParameters ( int keySize ) : ICipherParameters | ||
| keySize | int | |
| Résultat | ICipherParameters | |
public override IBufferedCipher createCipher(bool encrypt)
{
IDigest digest=getDigest();
PbeParametersGenerator pGen = new Pkcs12ParametersGenerator(digest);
pGen.Init(
PbeParametersGenerator.Pkcs12PasswordToBytes(pbe.Password),
pbe.Salt,
pbe.Iterations);
ParametersWithIV parameters = (ParametersWithIV)
pGen.GenerateDerivedParameters(pbe.BaseAlgorithm, pbe.KeySize, pbe.IvSize);
KeyParameter encKey = (KeyParameter) parameters.Parameters;
IBufferedCipher c;
if (pbe.BaseAlgorithm.Equals(Kpbe.Algorithms.RC4))
{
c = CipherUtilities.GetCipher(pbe.BaseAlgorithm);
c.Init(encrypt, encKey);
}
else
{
c = CipherUtilities.GetCipher(pbe.BaseAlgorithm + "/"+pbe.Mode+"/"+pbe.Padding);
c.Init(encrypt, parameters);
}
return c;
}
private void Run1(int id, char[] password, byte[] salt, int iCount, byte[] result)
{
PbeParametersGenerator generator = new Pkcs12ParametersGenerator(new Sha1Digest());
generator.Init(PbeParametersGenerator.Pkcs12PasswordToBytes(password), salt, iCount);
ICipherParameters key = generator.GenerateDerivedParameters("DESEDE", 24 * 8);
if (!Arrays.AreEqual(result, ((KeyParameter) key).GetKey()))
{
Fail("id " + id + " Failed");
}
}
private void Run2(int id, char[] password, byte[] salt, int iCount, byte[] result)
{
PbeParametersGenerator generator = new Pkcs12ParametersGenerator(new Sha1Digest());
generator.Init(PbeParametersGenerator.Pkcs12PasswordToBytes(password), salt, iCount);
ParametersWithIV parameters = (ParametersWithIV)
generator.GenerateDerivedParameters("DES", 64, 64);
if (!Arrays.AreEqual(result, parameters.GetIV()))
{
Fail("id " + id + " Failed");
}
}
public override void PerformTest()
{
int iCount = 100;
byte[] salt = DigestUtilities.DoFinal(digest);
PbeParametersGenerator pGen = new Pkcs12ParametersGenerator(digest);
pGen.Init(
PbeParametersGenerator.Pkcs12PasswordToBytes(password),
salt,
iCount);
ParametersWithIV parameters = (ParametersWithIV)
pGen.GenerateDerivedParameters(baseAlgorithm, keySize, ivSize);
KeyParameter encKey = (KeyParameter) parameters.Parameters;
IBufferedCipher c;
if (baseAlgorithm.Equals("RC4"))
{
c = CipherUtilities.GetCipher(baseAlgorithm);
c.Init(true, encKey);
}
else
{
c = CipherUtilities.GetCipher(baseAlgorithm + "/CBC/PKCS7Padding");
c.Init(true, parameters);
}
byte[] enc = c.DoFinal(salt);
c = CipherUtilities.GetCipher(algorithm);
// PBEKeySpec keySpec = new PBEKeySpec(password, salt, iCount);
// SecretKeyFactory fact = SecretKeyFactory.getInstance(algorithm);
//
// c.Init(false, fact.generateSecret(keySpec));
Asn1Encodable algParams = PbeUtilities.GenerateAlgorithmParameters(
algorithm, salt, iCount);
ICipherParameters cipherParams = PbeUtilities.GenerateCipherParameters(
algorithm, password, algParams);
c.Init(false, cipherParams);
byte[] dec = c.DoFinal(enc);
if (!AreEqual(salt, dec))
{
Fail("" + algorithm + "failed encryption/decryption test");
}
// NB: We don't support retrieving parameters from cipher
// //
// // get the parameters
// //
// AlgorithmParameters param = c.getParameters();
// PBEParameterSpec spec = (PBEParameterSpec)param.getParameterSpec(PBEParameterSpec.class);
//
// if (!AreEqual(salt, spec.getSalt()))
// {
// Fail("" + algorithm + "failed salt test");
// }
//
// if (iCount != spec.getIterationCount())
// {
// Fail("" + algorithm + "failed count test");
// }
// NB: This section just repeats earlier test passing 'param' separately
// //
// // try using parameters
// //
// keySpec = new PBEKeySpec(password);
//
// c.Init(false, fact.generateSecret(keySpec), param);
//
// dec = c.DoFinal(enc);
//
// if (!AreEqual(salt, dec))
// {
// Fail("" + algorithm + "failed encryption/decryption test");
// }
}