public virtual void Init(IDerivationParameters param)
{
DHKdfParameters dHKdfParameters = (DHKdfParameters)param;
this.algorithm = dHKdfParameters.Algorithm;
this.keySize = dHKdfParameters.KeySize;
this.z = dHKdfParameters.GetZ();
}
public virtual void Init(IDerivationParameters param)
{
DHKdfParameters parameters = (DHKdfParameters)param;
this.algorithm = parameters.Algorithm;
this.keySize = parameters.KeySize;
this.z = parameters.GetZ(); // TODO Clone?
this.partyAInfo = parameters.GetExtraInfo(); // TODO Clone?
}
public void Init(
IDerivationParameters param)
{
DHKdfParameters parameters = (DHKdfParameters)param;
this.algorithm = parameters.Algorithm;
this.keySize = parameters.KeySize;
this.z = parameters.GetZ(); // TODO Clone?
}
public virtual void Init(IDerivationParameters param)
{
DHKdfParameters dHKdfParameters = (DHKdfParameters)param;
algorithm = dHKdfParameters.Algorithm;
keySize = dHKdfParameters.KeySize;
z = dHKdfParameters.GetZ();
partyAInfo = dHKdfParameters.GetExtraInfo();
}
public override BigInteger CalculateAgreement(
ICipherParameters pubKey)
{
BigInteger result = base.CalculateAgreement(pubKey);
int keySize = (int) algorithms[algorithm];
DHKdfParameters dhKdfParams = new DHKdfParameters(
new DerObjectIdentifier(algorithm), keySize, result.ToByteArrayUnsigned());
kdf.Init(dhKdfParams);
byte[] keyBytes = new byte[keySize / 8];
kdf.GenerateBytes(keyBytes, 0, keyBytes.Length);
return new BigInteger(1, keyBytes);
}
public override IBigInteger CalculateAgreement(ICipherParameters pubKey)
{
// Note that the ec.KeyAgreement class in JCE only uses kdf in one
// of the engineGenerateSecret methods.
var result = base.CalculateAgreement(pubKey);
var keySize = GeneratorUtilities.GetDefaultKeySize(_algorithm);
var dhKdfParams = new DHKdfParameters(
new DerObjectIdentifier(_algorithm),
keySize,
BigIntToBytes(result));
_kdf.Init(dhKdfParams);
var keyBytes = new byte[keySize / 8];
_kdf.GenerateBytes(keyBytes, 0, keyBytes.Length);
return new BigInteger(1, keyBytes);
}
