57 lines
1.3 KiB
C#
57 lines
1.3 KiB
C#
using System;
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using System.Collections;
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using Org.BouncyCastle.Math;
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namespace Org.BouncyCastle.Crypto.Parameters
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{
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/**
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* Private key parameters for NaccacheStern cipher. For details on this cipher,
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* please see
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*
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* http://www.gemplus.com/smart/rd/publications/pdf/NS98pkcs.pdf
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*/
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public class NaccacheSternPrivateKeyParameters : NaccacheSternKeyParameters
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{
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private readonly BigInteger phiN;
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private readonly ArrayList smallPrimes;
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/**
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* Constructs a NaccacheSternPrivateKey
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*
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* @param g
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* the public enryption parameter g
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* @param n
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* the public modulus n = p*q
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* @param lowerSigmaBound
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* the public lower sigma bound up to which data can be encrypted
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* @param smallPrimes
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* the small primes, of which sigma is constructed in the right
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* order
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* @param phi_n
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* the private modulus phi(n) = (p-1)(q-1)
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*/
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public NaccacheSternPrivateKeyParameters(
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BigInteger g,
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BigInteger n,
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int lowerSigmaBound,
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ArrayList smallPrimes,
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BigInteger phiN)
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: base(true, g, n, lowerSigmaBound)
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{
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this.smallPrimes = smallPrimes;
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this.phiN = phiN;
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}
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public BigInteger PhiN
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{
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get { return phiN; }
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}
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public ArrayList SmallPrimes
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{
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get { return smallPrimes; }
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}
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}
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}
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