+==============================================================================+
|  DECRYPTION STATION — PUZZLE #13387                                |
+==============================================================================+

  CIPHER TYPE:     IRIS
  SECURITY LEVEL:  6/7

  STATUS:          [ACTIVE — AWAITING DECRYPTION]


  MISSION BRIEFING
  ----------------
Two 256-bit IrisCode vectors are provided. Compute the Hamming distance between them (fraction of differing bits). Answer is the distance as a float.

  INTERCEPTED DATA
  ----------------





> difficulty:
  6



> code1:
  0010111011101010111100100011100100010101100110010100000101011110000001000010000111000110000010110101110010001101001011100010000100111101101001001011110110000110111111111101000111100000101000101111100000011101110100111110000100111001101000011110101000011010



> code2:
  1001111000011111110000000011000011110001110100011100001010010010100001100010000011011110010000001110011001100000011001001000011100000110001101110110001111001101100101101101001101000011000001111011000101111011011101101011100011010001010111100101100100011100



> hint:
  IrisCode Hamming distance = count_differing_bits / 256. XOR the two bit vectors and count set bits. Answer = differing_bits/256 as exact decimal (trailing zeros OK, rounding not)



> answer format:
  exact decimal Hamming distance (0-1) — compute as differing_bits/256 for full precision. trailing zeros optional, rounding rejected





  [INTEL] Pool fill: iris diff 6


  DECRYPTION INPUT
  ----------------


    
    > ENTER PLAINTEXT: 
    > OPERATOR ID (optional): 
    


    [ SUBMIT SOLUTION ]





  NAVIGATION
  ----------
  [LEARN] Study this cipher type
  [BROWSE] Return to database