The seventh official hint for Challenge 10B
The Empty Vault › Forums › Bureau of Security and Signals Intelligence Forum › The official Challenge 10 tips and hints thread › The seventh official hint for Challenge 10B
29th December 2022 at 9:00 am
#87589
Harry
Keymaster
The seventh official hint for Challenge 10B
Now we know it is a modified Cadenus cipher with block length 26, the standard method of attack should work. What block widths are possible, given the length of the cipher text? Which are likely?