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- Just watched an hour of recorded #superbowl Fifteen minutes of play... crikey. I'm beginning to understand it, but it's no #sixnations 14 hrs ago
- looks like Wasps are out of the LV= cup, with Cardiff beating Llanelli 1 day ago
- 3-9 to @wasps .... 39 mins in 2nd half 1 day ago
- More updates...
Posting tweet...
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Tag Archives: Classical Cryptography
Numbers Stations
The most secure form of cryptography, indeed, the only provably secure form is the One Time Pad.
Pedantically the one time pad is not a single algorithm, but in general it is applying pre-agreed randomness to each letter.
The fundamental problem with the One Time Pad is the Key Distribution Problem, how do two people on [...]
Numbers Stations is part of a series
Paper based Enigma Machine
A nice little paper project for people who want a visual representation of Enigma.
Paper based Enigma Machine is part of a series
Posted in Classical Cryptography, Crypto Links Also tagged Cryptography, Cryptography Links, Enigma, World War 2 1 Comment
Poker By Phone
Is it possible to play poker by post or email?
Yes, if we assume that there is a trusted ‘know all’ dealer who tells each player their cards. However, is it popssible without such a trusted person.
Let’s summarise the problem. First we must shuffle the cards. Then the cards must be dealt, and no player must [...]
Poker By Phone is part of a series
The solution to the worked example
Over the past few days we have been looking at how we might solve:
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LIOZB AGEKQ UHRDH IKHWE OBNSQ RVIES LISYK
BIOVF IEWEO BQXIE UUIXK EKTUH NSZIB SWJIZ
BSKFK YWSXS EIDSQ INTBD RKOZD QELUM AAAEV
MIDMD GKJXR UKTUH TSBGI EQRVF XBAYG UBTCS
XTBDR SLYKW AFHMM TYCKU JHBWV TUHRQ XYHWM
IJBXS LSXUB BAYDI OFLPO XBULU OZAHE [...]
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Happy Birthday, Edgar Allen Poe
Happy Birthday, Edgar Allen Poe is part of a series