mirror of
https://github.com/in3rsha/sha256-animation
synced 2024-05-03 22:26:13 +02:00
90 lines
1.9 KiB
Ruby
90 lines
1.9 KiB
Ruby
# coding: utf-8
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require_relative "sha256lib.rb"
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# -----
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# Σ0(x)
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# -----
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# Σ0(x) = ROTR(2, x) ^ ROTR(13, x) ^ ROTR(22, x)
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# -----
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# Input
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# -----
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# default
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x = 0b00000000000000000011111111111111 # 0b11101001101101011101101110100101
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# argument passed
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x = ARGV[0].to_i(2) if ARGV[0] # binary
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# check arguments
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if ARGV[0] && ARGV[0].size > 32
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puts "We only operate on 32-bit words in SHA-256. Your x is #{ARGV[0].size} bits."; exit
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end
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# ---------
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# Animation
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# ---------
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system "clear"
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puts "x: #{bits(x)}"
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puts " #{'-'*32}"
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puts "ROTR 2: #{bits(x)}"
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puts "ROTR 13: #{bits(x)}"
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puts "ROTR 22: #{bits(x)}"
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puts " #{'-'*32}"
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puts "Σ0(x):"
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sleep(0.1)
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# ROTR(2, x)
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(2+1).times do |i|
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system "clear"
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puts "x: #{bits(x)}"
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puts " #{'-'*32}"
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puts "ROTR 2: #{bits(rotr(i, x))}"
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puts "ROTR 13: #{bits(x)}"
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puts "ROTR 22: #{bits(x)}"
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puts " #{'-'*32}"
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puts "Σ0(x):"
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sleep(0.1)
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end
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sleep(0.1)
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# ROTR(13, x)
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(13+1).times do |i|
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system "clear"
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puts "x: #{bits(x)}"
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puts " #{'-'*32}"
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puts "ROTR 2: #{bits(rotr(2, x))}"
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puts "ROTR 13: #{bits(rotr(i, x))}"
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puts "ROTR 22: #{bits(x)}"
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puts " #{'-'*32}"
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puts "Σ0(x):"
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sleep(0.1)
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end
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sleep(0.1)
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# ROTR(22, x)
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(22+1).times do |i|
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system "clear"
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puts "x: #{bits(x)}"
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puts " #{'-'*32}"
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puts "ROTR 2: #{bits(rotr(2, x))}"
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puts "ROTR 13: #{bits(rotr(13, x))}"
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puts "ROTR 22: #{bits(rotr(i, x))}"
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puts " #{'-'*32}"
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puts "Σ0(x):"
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sleep(0.1)
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end
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sleep(0.1)
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# ROTR(2, x) ^ ROTR(13, x) ^ ROTR(22, x)
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32.downto(1) do |i|
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system "clear"
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puts "x: #{bits(x)}"
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puts " #{'-'*32}"
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puts "ROTR 2: #{bits(rotr(2, x))}"
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puts "ROTR 13: #{bits(rotr(13, x))} XOR"
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puts "ROTR 22: #{bits(rotr(22, x))} XOR"
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puts " #{'-'*32}"
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puts "Σ0(x): #{bits(rotr(2, x) ^ rotr(13, x) ^ rotr(22, x))[i-1..-1].rjust(32, " ")}"
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sleep(0.1)
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end
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sleep(1)
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