Jose\Component\Core\Util\Ecc\Random\RandomNumberGenerator::generate()

Complexity

Conditions	1
Paths	1

Size

Total Lines	14
Code Lines	8

Duplication

Lines	0
Ratio	0 %

Importance

Changes

0

<?php
    public function generate(\GMP $max)
    {
        $numBits = NumberSize::bnNumBits($this->adapter, $max);
        $numBytes = ceil($numBits / 8);

        // Generate an integer of size >= $numBits
        $bytes = random_bytes($numBytes);
        $value = $this->adapter->stringToInt($bytes);

        $mask = gmp_sub(gmp_pow(2, $numBits), 1);
        $integer = gmp_and($value, $mask);

        return $integer;
    }
}