/**
* set up for use in conjunction with a block cipher to handle the
* message.
*
* @param agree the key agreement used as the basis for the encryption
* @param kdf the key derivation function used for byte generation
* @param mac the message authentication code generator for the message
* @param cipher the cipher to used for encrypting the message
*/
public IesEngine(IBasicAgreement agree, IDerivationFunction kdf, IMac mac, BufferedBlockCipher cipher)
{
_agree = agree;
_kdf = kdf;
_mac = mac;
_macBuf = new byte[mac.GetMacSize()];
_cipher = cipher;
}
/**
* set up for use with stream mode, where the key derivation function
* is used to provide a stream of bytes to xor with the message.
*
* @param agree the key agreement used as the basis for the encryption
* @param kdf the key derivation function used for byte generation
* @param mac the message authentication code generator for the message
*/
public IesEngine(IBasicAgreement agree, IDerivationFunction kdf, IMac mac)
{
_agree = agree;
_kdf = kdf;
_mac = mac;
_macBuf = new byte[mac.GetMacSize()];
// this.cipher = null;
}
public ECDHWithKdfBasicAgreement(string algorithm, IDerivationFunction kdf)
{
if (algorithm == null)
throw new ArgumentNullException("algorithm");
if (kdf == null)
throw new ArgumentNullException("kdf");
_algorithm = algorithm;
_kdf = kdf;
}
public ECDHWithKdfBasicAgreement(
string algorithm,
IDerivationFunction kdf)
{
if (algorithm == null)
throw new ArgumentNullException("algorithm");
if (!algorithms.Contains(algorithm))
throw new ArgumentException("Unknown algorithm", "algorithm");
if (kdf == null)
throw new ArgumentNullException("kdf");
this.algorithm = algorithm;
this.kdf = kdf;
}
public ECDHWithKdfBasicAgreement(
string algorithm,
IDerivationFunction kdf)
{
if (algorithm == null)
{
throw new ArgumentNullException("algorithm");
}
if (kdf == null)
{
throw new ArgumentNullException("kdf");
}
this.algorithm = algorithm;
this.kdf = kdf;
}
private void checkMask(
int count,
IDerivationFunction kdf,
byte[] seed,
byte[] result)
{
byte[] data = new byte[result.Length];
kdf.Init(new MgfParameters(seed));
kdf.GenerateBytes(data, 0, data.Length);
if (!AreEqual(result, data))
{
Fail("MGF1 failed generator test " + count);
}
}
private void checkMask(
int count,
IDerivationFunction kdf,
byte[] seed,
byte[] result)
{
byte[] data = new byte[result.Length];
kdf.Init(new Iso18033KdfParameters(seed));
kdf.GenerateBytes(data, 0, data.Length);
if (!AreEqual(result, data))
{
Fail("KDF1 failed generator test " + count);
}
}
private void CheckMask(
int count,
IDerivationFunction kdf,
IDerivationParameters parameters,
byte[] result)
{
byte[] data = new byte[result.Length];
kdf.Init(parameters);
kdf.GenerateBytes(data, 0, data.Length);
if (!AreEqual(result, data))
{
Fail("ECDHKekGenerator failed generator test " + count);
}
}
private void CheckMask(
int count,
IDerivationFunction kdf,
IDerivationParameters parameters,
byte[] result)
{
byte[] data = new byte[result.Length];
kdf.Init(parameters);
kdf.GenerateBytes(data, 0, data.Length);
if (!AreEqual(result, data))
{
Fail("ECDHKekGenerator failed generator test " + count);
}
}
public ECDHKekGenerator(IDigest digest)
{
this.kdf = new Kdf2BytesGenerator(digest);
}
internal AgreementKdfCalculator(AgreementKdfParameters parameters, IDerivationFunction derivationFunction)
{
this.parameters = parameters;
this.derivationFunction = derivationFunction;
}
public EcdhKekGenerator(IDigest digest)
{
_kdf = new Kdf2BytesGenerator(digest);
}
public ECDHKekGenerator(IDigest digest)
{
this.kdf = new Kdf2BytesGenerator(digest);
}
public EcdhKekGenerator(IDigest digest)
{
_kdf = new Kdf2BytesGenerator(digest);
}
public PascalCoinIesEngine(IBasicAgreement agree, IDerivationFunction kdf, IMac mac, BufferedBlockCipher cipher)
: base(agree, kdf, mac, cipher)
{
}
public PascalCoinIesEngine(IBasicAgreement agree, IDerivationFunction kdf, IMac mac) : base(agree, kdf, mac)
{
}