Topic: •••• COINICHIWA • DICE • SINCE 2014 • INVEST • NEW DARK THEME •••• - page 13. (Read 32782 times)

#!/bin/ruby -w

require 'digest/sha1'

$verbose = false
$server_seed = "be550440770a09e97fffa4d8460f37d"
$client_seed = "kKF09tvtY4ixjX"
$end_nounce = 10
$start_nounce = 1

def simulate_roll(server_seed, client_seed, nounce)
    # must be defined here to use it later
    converted_reduced_hashed_string = 0
    # concat seeds and nounce to a single string
    seed = "#{server_seed}-#{client_seed}-#{nounce}"
    puts "seed: #{seed}" if $verbose
   
    loop do
        # hash string
        seed = Digest::SHA1.hexdigest(seed)
        puts "sha1(seed): #{seed}" if $verbose
   
        # keep only the first 8 digits
        reduced_hashed_string = seed[0..7]
        puts "sha1(seed)[0..7]: #{reduced_hashed_string}" if $verbose
   
        # convert 8 hex digits to Integer
        converted_reduced_hashed_string = reduced_hashed_string.to_i(16)
        puts "sha1(seed)[0..7] to int: #{converted_reduced_hashed_string}" if $verbose
       
        # remove bais towards rolls <= 72.96
        # this must be done because the max value of 8 hexdigits
        # is 16**8 = 4294967296 and thus a mod 10k would prefer
        # said rolls
        break if (converted_reduced_hashed_string <= 4294960000)
    end
   
    # modulo 10000 the final integer
    modulo_10000_of_converted_reduced_hashed_string = converted_reduced_hashed_string % 10000
    puts "sha1(...)[0..7] to int % 10000: #{modulo_10000_of_converted_reduced_hashed_string}" if $verbose   
    return modulo_10000_of_converted_reduced_hashed_string
end

puts "Server seed: #{$server_seed}"
puts "Server seed hash: #{Digest::SHA1.hexdigest($server_seed)}"
puts "Client seed: #{$client_seed}"

for i in $start_nounce..$end_nounce
    puts "Roll \##{i}: #{simulate_roll($server_seed, $client_seed, i).to_s.rjust(4,'0')}"
end

Server seed: be550440770a09e97fffa4d8460f37d
Server seed hash: 57bf8129885d81c14f8245d84a0cb9ef810afe2d
Client seed: kKF09tvtY4ixjX
Roll #1: 4071
Roll #2: 0006
Roll #3: 6477
Roll #4: 1594
Roll #5: 1705
Roll #6: 7041
Roll #7: 7053
Roll #8: 3547
Roll #9: 5041
Roll #10: 7685