•••• COINICHIWA • DICE • SINCE 2014 • INVEST • NEW DARK THEME ••••

Since it was recently asked on the chat if the verification can be done externally Ill post this here, maybe someone can verify that its working properly.

Code:

#!/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

Example output:

Code:

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