helper.rb

require 'digest'

$m = 2**32
$a = 1103515245
$c = 12345

def dectobin(var)
    return var.to_s(2)
end

def dectohex(var)
    return var.to_s(16)
end

def stringtoint(var)
    return var.to_i()
end

def hextodec(var)
    return ("0x"+var).hex
end

def generateSHA256(var)
    q = Digest::SHA256.hexdigest var
    return q.to_i(16)
end

def randomNumberGeneration ()
    seed = rand $randLow..$randHigh
    seed = seed.to_f
    iter = rand $randLow..$randHigh
    iter = iter.to_i
    lastVal = 0
    counter = 0
    while counter < iter
        seed = (($a * seed) + $c) % $m
        counter = counter + 1
        lastVal = seed/$m
    end
    numberOfChar = ((lastVal.to_s).length)-2
    numberOfChar = rand 2..numberOfChar
    numberOfChar = numberOfChar.to_i
    numberOfChar = 10**numberOfChar
    puts (lastVal*numberOfChar)
    return (lastVal*numberOfChar).to_i
end