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aurquiel

Well the script that i was able to implement in cipher long 1 taked aorund 689 seconds to decrypt the string, so i added another for cicle for the x variable but imagine something like 689 seconds * 0xFFFFFFFF i was running the new sript for two days, it was impossible to get a fast answer. I am usi...

aurquiel

if i try brute force my program takes to long to guess the 8 bytes 4 from k and another for x, am i doing with the correct point of view?

aurquiel

This c program will filter the results with the more commons English words /*Challenge 'Didactic XOR Cipher 2' [Crypto] Here is a string of bytes encoded in hex: 948881859781c4979186898d90c4c68c85878f85808b8b808881c6c4828b96c4908c8d97c4878c858888818a8381 This sequence has been encrypted with the sam...

aurquiel

I have a i5 processor and just guessing the four bytes key with a c program of 50 lines is taking a couple of minutes
By brute force it takes around 3 min of program running.

aurquiel

In this code

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k = {unknown byte}
for (i = 0; i < len(txt); i++)
  c = txt[i] ^ k
  print c
  k = c

This

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k = c

should be this

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k = txt[i]

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