By: admin on Sept. 24, 2015, 7:30 a.m.
The challenges for the simplified GRANIT cipher, a method that can be done manually, serve as an exercise and use an intentionally simplified version of GRANIT.
Part 1 is a ciphertext-only challenge for which both permutation keys are known.
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By: Theofanidis on Sept. 25, 2015, 4:37 p.m.
Hello MTC3 team (Scatha) ,
I am certain that 3 minor errors occur at each starting email of each forum concerning the Weakened Granit - Part 1/2/3
While it is stated that
Post subject: Challenge "Weakened Granit — Part 1
The challenges for the simplified GRANIT cipher, a method that can be done manually, serve as an exercise and contain an intentionally weakened version of GRANIT. Part 1 is a ciphertext-only challenge for which the second permutation key is known.
Post subject: Challenge "Weakened Granit — Part 2"
The challenges for the simplified GRANIT cipher, a method that can be done manually, serve as an exercise and contain an intentionally weakened version of GRANIT. Part 2 is a ciphertext-only challenge for which both permutation keys are known.
Post subject: Challenge "Weakened Granit — Part 3"
The challenges for the simplified GRANIT cipher, a method that can be done manually, serve as an exercise and contain an intentionally weakened version of GRANIT. Part 3 is a ciphertext-only challenge for which the first permutation key is known.
, the correct texts should be
Post subject: Challenge "Weakened Granit — Part 1
The challenges for the simplified GRANIT cipher, a method that can be done manually, serve as an exercise and contain an intentionally weakened version of GRANIT. Part 1 is a ciphertext-only challenge for which both permutation keys are known.
Post subject: Challenge "Weakened Granit — Part 2"
The challenges for the simplified GRANIT cipher, a method that can be done manually, serve as an exercise and contain an intentionally weakened version of GRANIT. Part 2 is a ciphertext-only challenge for which the first permutation key is known.
Post subject: Challenge "Weakened Granit — Part 3"
The challenges for the simplified GRANIT cipher, a method that can be done manually, serve as an exercise and contain an intentionally weakened version of GRANIT. Part 3 is a ciphertext-only challenge for which the second permutation key is known.
This conclusion is obvious if you compare the 3 pdf files. There R1 and R2, R1 and R2 are known in each part
The rest data seems OK
Best Regards
George Theofanidis
P.S. Keep up the great work you are doing.
By: Scatha on Sept. 26, 2015, 6:13 p.m.
Hello George,
thank you for your help, you are totally right regarding the starting descriptions. The order of the challenges has changed through the process of making them, but it seems I forgot to change the order of these texts as well. I'm sorry for that.
I will correct the texts right now.
Best regards,
Scatha