List of bitLength() Examples

Examples of bitLength()

com.ericsson.otp.erlang.OtpErlangLong.bitLength()
Returns the number of bits in the minimal two's-complement representation of this BigInteger, excluding a sign bit. @return number of bits in the minimal two's-complement representation ofthis BigInteger, excluding a sign bit.
java.math.BigInteger.bitLength()
Calculate bitlength of contents of the first len elements an int array, assuming there are no leading zero ints.
net.i2p.util.NativeBigInteger.bitLength()
org.bouncycastle.crypto.params.ParametersWithRandom.bitLength()
org.bouncycastle2.crypto.params.ParametersWithRandom.bitLength()

Examples of java.math.BigInteger.bitLength()

        }


        BigInteger norm = norm(mu, lambda);


        // Ceiling of log2 of the norm 
        int log2Norm = norm.bitLength();


        // If length(TNAF) > 30, then length(TNAF) < log2Norm + 3.52
        int maxLength = log2Norm > 30 ? log2Norm + 4 + width : 34 + width;


        // The array holding the TNAF

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Examples of java.math.BigInteger.bitLength()

        int tmodd1 = t.mod(BigInteger.valueOf(d1)).intValue();
        int d2 = (tmodd1==0)?d1:ArithmeticUtils.gcd(tmodd1, d1);


        // result is (t/d2) / (u'/d1)(v'/d2)
        BigInteger w = t.divide(BigInteger.valueOf(d2));
        if (w.bitLength() > 31) {
            throw new MathArithmeticException(LocalizedFormats.NUMERATOR_OVERFLOW_AFTER_MULTIPLY,
                                              w);
        }
        return new Fraction (w.intValue(),
                ArithmeticUtils.mulAndCheck(denominator/d1,

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Examples of java.math.BigInteger.bitLength()

    BigInteger q = new BigInteger(1, qBuf);
    
    // 4: Check that q is prime, and 2q+1 is prime
    // 5: If not, restart from step 1
    
    System.out.println("Maybe got prime: "+q.toString(16)+ " ("+q.bitLength()+ ')');
    
    if(!isPrime(q))
      return false;
    
    System.out.println("Got prime q");

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Examples of java.math.BigInteger.bitLength()

      // 9: Let c = X mod 2q. Set p = X - ( c - 1 ). Therefore p mod 2q = 1.
      
      BigInteger c = X.mod(q.add(q));
      BigInteger p = X.subtract(c.subtract(BigInteger.ONE));
      
      if(p.bitLength() >= keyLength-1) {
        if(isPrime(p)) {
          finish(r, hashLength, new NativeBigInteger(p), new NativeBigInteger(q), seed, counter);
          return true;
        }
      }

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Examples of java.math.BigInteger.bitLength()


    public static int readECExponent(int fieldSize, InputStream input)
        throws IOException
    {
        BigInteger K = readECParameter(input);
        if (K.bitLength() < 32)
        {
            int k = K.intValue();
            if (k > 0 && k < fieldSize)
            {
                return k;

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Examples of java.math.BigInteger.bitLength()

        ECPublicKeyParameters   Q2U,
        ECPublicKeyParameters   Q1V,
        ECPublicKeyParameters   Q2V)
    {
        BigInteger n = parameters.getN();
        int e = (n.bitLength() + 1) / 2;
        BigInteger powE = ECConstants.ONE.shiftLeft(e);


        // The Q2U public key is optional
        ECPoint q;
        if (Q2U == null)

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Examples of java.math.BigInteger.bitLength()


                BigInteger c = x.mod(q.shiftLeft(1));


                BigInteger p = x.subtract(c.subtract(ONE));


                if (p.bitLength() != L)
                {
                    continue;
                }


                if (p.isProbablePrime(certainty))

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Examples of java.math.BigInteger.bitLength()


        for (;;)
        {
            BigInteger h = BigIntegers.createRandomInRange(TWO, pSub2, r);
            BigInteger g = h.modPow(e, p);
            if (g.bitLength() > 1)
            {
                return g;
            }
        }
    }

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Examples of java.math.BigInteger.bitLength()


// 11.5 p = X - (c - 1). Comment: p ≡ 1 (mod 2q).
                BigInteger p = X.subtract(c.subtract(ONE));


// 11.6 If (p < 2^(L - 1)), then go to step 11.9
                if (p.bitLength() != L)
                {
                    continue;
                }


// 11.7 Test whether or not p is prime as specified in Appendix C.3.

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Examples of java.math.BigInteger.bitLength()

        {
            throw new IllegalStateException("not initialised for signing");
        }
        
        BigInteger n = ((ECPrivateKeyParameters)this.key).getParameters().getN();
        int nBitLength = n.bitLength();
        
        BigInteger e = new BigInteger(1, digest);
        int eBitLength = e.bitLength();
        
        ECPrivateKeyParameters  privKey = (ECPrivateKeyParameters)key;

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