Username: 
Password: 
Restrict session to IP 

30 different digrams?  Go to the Training: Crypto - Digraphs challenge

Global Rank: 8789
Totalscore: 381
Posts: 2
Thanks: 2
UpVotes: 2
Registered: 4y 291d
Last Seen: 4y 208d
The User is Offline
30 different digrams?
Google/translate1Thank You!1Good Post!0Bad Post! link
I don't get it - the description says there are 26 letters used. But I get 30 different digrams if I analyze the ciphertext. How can be 4 digrams mapped? Is it upper case? I assume yes, because the description also says the text is in "correct case". But then we have (26*2)^2 different possibilities, don't we?
Last edited by Smasher - Jan 03, 2016 - 04:41:53
Global Rank: 401
Totalscore: 55965
Posts: 3
Thanks: 4
UpVotes: 2
Registered: 5y 53d

Last Seen: 3y 333d
The User is Offline
RE: 30 different digrams?
Google/translate1Thank You!1Good Post!0Bad Post! link
The question says:
"The message [...] is written with correct case and punctuation."
so you can have 2*26 plus some special chars.
Redknee, tunelko, silenttrack, qdxy, n0tHappy, TheHiveMind, Z, Ge0, samuraiblanco, arraez, jcquinterov, hophuocthinh, alfamen2, burhanudinn123, Ben_Dover, stephanduran89, braddie0 have subscribed to this thread and receive emails on new posts.
1 people are watching the thread at the moment.
This thread has been viewed 15900 times.