List of modPow() Examples

Examples of modPow()

java.math.BigInteger.modPow()
Returns a BigInteger whose value is (this^exponent mod m). (Unlike {@code pow}, this method permits negative exponents.) @param exponent the exponent. @param m the modulus. @return this^exponent mod m @throws ArithmeticException {@code m <= 0} @see #modInverse
net.i2p.util.NativeBigInteger.modPow()

Examples of java.math.BigInteger.modPow()

            if (g.modPow(TWO, p).equals(ONE))
            {
                continue;
            }


            if (g.modPow(q, p).equals(ONE))
            {
                continue;
            }


            break;

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Examples of java.math.BigInteger.modPow()

        //
        for (;;)
        {
            g = new BigInteger(qLength, random);


            if (g.modPow(TWO, p).equals(ONE))
            {
                continue;
            }


            if (g.modPow(q, p).equals(ONE))

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Examples of java.math.BigInteger.modPow()

            if (g.modPow(TWO, p).equals(ONE))
            {
                continue;
            }


            if (g.modPow(q, p).equals(ONE))
            {
                continue;
            }


            break;

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Examples of java.math.BigInteger.modPow()

   * Compute the exponent for reverting w squarings modulo prime p.
   */
  private static BigInteger sqrtExp(BigInteger p, int w)
  {
    BigInteger e = p.add(BigInteger.ONE).shiftRight(2);
    return e.modPow(BigInteger.valueOf(w),
      p.subtract(BigInteger.ONE));
  }


  /*
   * Apply CRT on zp and zq, for primes p and q; iq is the

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Examples of java.math.BigInteger.modPow()

    if(!isInZN(input)) {
      throw new PaillierException(PaillierException.TYPE_PLAINTEXT_NOT_IN_ZN, input);
    }
    BigInteger plaintext = handleNegative(input);
    BigInteger r = randomInZStarN();
    return (((n.multiply(plaintext).add(BigInteger.ONE)).multiply(r.modPow(n, nSquared)))).mod(nSquared);
  }
  
  public BigInteger homomorphicAdd(BigInteger ciphertext1, BigInteger ciphertext2) throws PaillierException {
      if (!isInZStarNSquared(ciphertext1))
        {

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Examples of java.math.BigInteger.modPow()

    transport.writeMessage(init);
    KexDHReplyMessage reply = (KexDHReplyMessage)transport
      .readMessage(NAMESPACE);


    BigInteger f = reply.getF();
    k = f.modPow(x, p);


    byte[] ks = reply.getKS();
    if (!hv.isTrusted(transport, reply.getKeyFormat(), ks)) {
      throw new SSHException("Server host key not trusted");
    }

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Examples of java.math.BigInteger.modPow()

   * Decrypts an RSA encrypted packet using our private key
   */
  public static RSCPacket decryptRSA(byte[] pData) {
    try {
      BigInteger bigInteger = new BigInteger(pData);
      pData = bigInteger.modPow(key, modulus).toByteArray();
      return new RSCPacket(null, 0, pData, true);
    } catch (Exception e) {
      return null;
    }
  }

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Examples of java.math.BigInteger.modPow()


            int j = 0;
            BigInteger z = b.modPow(m, $(this));
            while (!((j == 0 && z.equals(ONE)) || z.equals(thisMinusOne))) {
                if (j > 0 && z.equals(ONE) || ++j == a) return false;
                z = z.modPow(TWO, $(this));
            }
        }
        return true;
    }

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Examples of net.i2p.util.NativeBigInteger.modPow()

        BigInteger e = p.subtract(BigInteger.ONE).divide(q);
        NativeBigInteger h;
        do {
          h = new NativeBigInteger(hashLength, r);
        } while(h.compareTo(p.subtract(BigInteger.ONE)) >= 0);
        g = (NativeBigInteger) h.modPow(e, p);
      } while (g.equals(BigInteger.ONE));
      DSAGroup group = new DSAGroup(p, q, g);
      System.out.println("g: "+HexUtil.toHexString(g)+" ("+g.bitLength()+ ')');
      System.out.println("Group: "+group.verboseToString());
      long totalSigTime = 0;

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