public void init(
CipherParameters param)
{
AsymmetricKeyParameter kParam;
if (typeof(ParametersWithRandom).IsInstanceOfType(param))
{
ParametersWithRandom rParam = (ParametersWithRandom)param;
this.random = rParam.getRandom();
kParam = (AsymmetricKeyParameter)rParam.getParameters();
}
else
{
this.random = new SecureRandom();
kParam = (AsymmetricKeyParameter)param;
}
if (!(typeof(DHPrivateKeyParameters).IsInstanceOfType(kParam)))
{
throw new ArgumentException("DHEngine expects DHPrivateKeyParameters");
}
this.key = (DHPrivateKeyParameters)kParam;
this.dhParams = key.getParameters();
}
public virtual void init(bool forSigning, CipherParameters param)
{
RSAKeyParameters kParam = null;
if (param is ParametersWithRandom)
{
ParametersWithRandom p = (ParametersWithRandom)param;
kParam = (RSAKeyParameters)p.getParameters();
random = p.getRandom();
}
else
{
kParam = (RSAKeyParameters)param;
if (forSigning)
{
random = new SecureRandom();
}
}
cipher.init(forSigning, kParam);
emBits = kParam.getModulus().bitLength() - 1;
block = new byte[(emBits + 7) / 8];
reset();
}
/// <summary> Initialise the signer.
///
/// </summary>
/// <param name="forSigning">true if for signing, false if for verification.
/// </param>
/// <param name="param">parameters for signature generation/verification. If the
/// parameters are for generation they should be a ParametersWithRandom,
/// a ParametersWithSalt, or just an RSAKeyParameters object. If RSAKeyParameters
/// are passed in a SecureRandom will be created.
/// </param>
/// <exception cref="ArgumentException"> IllegalArgumentException if wrong parameter type or a fixed
/// salt is passed in which is the wrong length.
/// </exception>
public virtual void init(bool forSigning, CipherParameters param)
{
RSAKeyParameters kParam = null;
int lengthOfSalt = saltLength;
if (param is ParametersWithRandom)
{
ParametersWithRandom p = (ParametersWithRandom)param;
kParam = (RSAKeyParameters)p.getParameters();
random = p.getRandom();
}
else if (param is ParametersWithSalt)
{
ParametersWithSalt p = (ParametersWithSalt)param;
kParam = (RSAKeyParameters)p.getParameters();
standardSalt = p.getSalt();
lengthOfSalt = standardSalt.Length;
}
else
{
kParam = (RSAKeyParameters)param;
if (forSigning)
{
random = new SecureRandom();
}
}
cipher.init(forSigning, kParam);
keyBits = kParam.getModulus().bitLength();
block = new byte[(keyBits + 7) / 8];
if (trailer == TRAILER_IMPLICIT)
{
mBuf = new byte[block.Length - digest.getDigestSize() - lengthOfSalt - 1 - 1];
}
else
{
mBuf = new byte[block.Length - digest.getDigestSize() - lengthOfSalt - 1 - 2];
}
reset();
}
/**
* initialise the ElGamal engine.
*
* @param forEncryption true if we are encrypting, false otherwise.
* @param param the necessary ElGamal key parameters.
*/
public void init(
bool forEncryption,
CipherParameters param)
{
if (typeof(ParametersWithRandom).IsInstanceOfType(param))
{
ParametersWithRandom p = (ParametersWithRandom)param;
this.key = (ElGamalKeyParameters)p.getParameters();
this.random = p.getRandom();
}
else
{
this.key = (ElGamalKeyParameters)param;
this.random = new SecureRandom();
}
this.forEncryption = forEncryption;
}
public void init(
bool forEncryption,
CipherParameters param)
{
AsymmetricKeyParameter kParam;
if (typeof(ParametersWithRandom).IsInstanceOfType(param))
{
ParametersWithRandom rParam = (ParametersWithRandom)param;
this.random = rParam.getRandom();
kParam = (AsymmetricKeyParameter)rParam.getParameters();
}
else
{
this.random = new SecureRandom();
kParam = (AsymmetricKeyParameter)param;
}
engine.init(forEncryption, kParam);
this.forEncryption = forEncryption;
}
public void init(
bool forSigning,
CipherParameters param)
{
if (forSigning)
{
if (typeof(ParametersWithRandom).IsInstanceOfType(param))
{
ParametersWithRandom rParam = (ParametersWithRandom)param;
this.random = rParam.getRandom();
this.key = (DSAPrivateKeyParameters)rParam.getParameters();
}
else
{
this.random = new SecureRandom();
this.key = (DSAPrivateKeyParameters)param;
}
}
else
{
this.key = (DSAPublicKeyParameters)param;
}
}
/**
* initialise the cipher.
*
* @param forEncryption if true the cipher is initialised for
* encryption, if false for decryption.
* @param param the key and other data required by the cipher.
* @exception IllegalArgumentException if the params argument is
* inappropriate.
*/
public override void init(
bool forEncryption,
CipherParameters parameters)
//throws IllegalArgumentException
{
this.forEncryption = forEncryption;
reset();
if (typeof(ParametersWithRandom).IsInstanceOfType(parameters))
{
ParametersWithRandom p = (ParametersWithRandom)parameters;
padding.init(p.getRandom());
cipher.init(forEncryption, p.getParameters());
}
else
{
padding.init(null);
cipher.init(forEncryption, parameters);
}
}