Module: Matasano::Sets::Set1

Included in:
Matasano::Solver
Defined in:
lib/crypto-toolbox/matasano/sets/set1.rb

Instance Method Summary collapse

Instance Method Details

#solve1(input) ⇒ Object 



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# File 'lib/crypto-toolbox/matasano/sets/set1.rb', line 5

def solve1(input)
  CryptBuffer.from_hex(input).base64
end

#solve2(c1, c2) ⇒ Object 



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# File 'lib/crypto-toolbox/matasano/sets/set1.rb', line 9

def solve2(c1,c2)
  (CryptBuffer.from_hex(c1) ^ CryptBuffer.from_hex(c2)).hex.downcase
end

#solve3(input) ⇒ Object 



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# File 'lib/crypto-toolbox/matasano/sets/set1.rb', line 13

def solve3(input)
  candidates = (1..256).map{ |guess| CryptBuffer.from_hex(input).xor_all_with(guess) }
  detector = Analyzers::Utils::HumanLanguageDetector.new
  
  detector.human_language_entries(candidates).first.to_s
end

#solve4(hexstrings) ⇒ Object

challange: One of the 60-character strings in this file has been encrypted by single-character XOR.



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# File 'lib/crypto-toolbox/matasano/sets/set1.rb', line 22

def solve4(hexstrings)
  detector = Analyzers::Utils::HumanLanguageDetector.new
  result = hexstrings.map{|h| CryptBuffer.from_hex(h)}.map.with_index do |c,i|
    candidates = (1..256).map{ |guess| c.xor_all_with(guess) }
    matches = detector.human_language_entries(candidates)

    matches.empty? ? nil : matches
  end
  result.flatten.compact.map(&:str).first
end

#solve5(input, key) ⇒ Object 



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# File 'lib/crypto-toolbox/matasano/sets/set1.rb', line 33

def solve5(input,key)
  CryptBuffer(input).xor(key,expand_input: true).hex
end

#solve6(input) ⇒ Object 



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# File 'lib/crypto-toolbox/matasano/sets/set1.rb', line 37

def solve6(input)
  buffer = CryptBuffer.from_base64(input)
  Analyzers::VigenereXor.new.analyze(buffer.hex,Analyzers::VigenereXor::HammingDistanceKeyLengthFinder.new)
end

#solve7(input, key) ⇒ Object 



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# File 'lib/crypto-toolbox/matasano/sets/set1.rb', line 42

def solve7(input,key)
  data = CryptBuffer.from_base64(input).str
  Ciphers::Aes.new.decipher_ecb(key,data)
end

#solve8(ciphers) ⇒ Object 



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# File 'lib/crypto-toolbox/matasano/sets/set1.rb', line 47

def solve8(ciphers)
  Utils::EcbDetector.new.detect(ciphers).first
end