Examples of bitLength()


Examples of java.math.BigInteger.bitLength()

        ECPublicKeyParameters pubKey = (ECPublicKeyParameters)key;
        BigInteger n = pubKey.getParameters().getN();
        int nBitLength = n.bitLength();
       
        BigInteger e = new BigInteger(1, digest);
        int eBitLength = e.bitLength();
       
        if (eBitLength > nBitLength)
        {
            throw new DataLengthException("input too large for ECNR key.");
        }
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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 : 34;

        // The array holding the TNAF
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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()

        // -> |n| = strength
        // |2| = 1 in bits
        // -> |a| * |b| = |n| - |u| - |v| - |p_| - |q_| - |2| -|2|
        // remainingStrength = strength - sigma.bitLength() - p_.bitLength() -
        // q_.bitLength() - 1 -1
        int remainingStrength = strength - sigma.bitLength() - 48;
        BigInteger a = generatePrime(remainingStrength / 2 + 1, certainty, rand);
        BigInteger b = generatePrime(remainingStrength / 2 + 1, certainty, rand);

        BigInteger p_;
        BigInteger q_;
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Examples of java.math.BigInteger.bitLength()

            int bitLength,
            int certainty,
            SecureRandom rand)
    {
        BigInteger p_ = new BigInteger(bitLength, certainty, rand);
        while (p_.bitLength() != bitLength)
        {
            p_ = new BigInteger(bitLength, certainty, rand);
        }
        return p_;
    }
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Examples of java.math.BigInteger.bitLength()

        {
            throw new IllegalStateException("generator not initialised");
        }

        BigInteger m = key.getModulus();
        int length = m.bitLength() - 1; // must be less than m.bitLength()
        BigInteger factor;
        BigInteger gcd;

        do
        {
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Examples of java.math.BigInteger.bitLength()

        this.forEncryption = forEncryption;

        BigInteger p = key.getParameters().getP();

        bitSize = p.bitLength();

        if (forEncryption)
        {
            if (!(key instanceof ElGamalPublicKeyParameters))
            {
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Examples of java.math.BigInteger.bitLength()

                block = in;
            }

            BigInteger input = new BigInteger(1, block);

            if (input.bitLength() >= p.bitLength())
            {
                throw new DataLengthException("input too large for ElGamal cipher.\n");
            }

            ElGamalPublicKeyParameters  pub = (ElGamalPublicKeyParameters)key;
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Examples of java.math.BigInteger.bitLength()

            } else if (BigDecimal.ONE.equals(x)) {
                writeByte((byte) (DECIMAL_0_1 + 1));
            } else {
                int scale = x.scale();
                BigInteger b = x.unscaledValue();
                int bits = b.bitLength();
                if (bits <= 63) {
                    if (scale == 0) {
                        writeByte((byte) DECIMAL_SMALL_0);
                        writeVarLong(b.longValue());
                    } else {
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Examples of java.math.BigInteger.bitLength()

            } else if (BigDecimal.ONE.equals(x)) {
                return 1;
            }
            int scale = x.scale();
            BigInteger b = x.unscaledValue();
            int bits = b.bitLength();
            if (bits <= 63) {
                if (scale == 0) {
                    return 1 + getVarLongLen(b.longValue());
                }
                return 1 + getVarIntLen(scale) + getVarLongLen(b.longValue());
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