17 Dec
2003
17 Dec
'03
11:17 p.m.
paul@fatmans.demon.co.uk wrote:
* The two 'e's in the first word have different ciphertext equivalents, so it's not a single-alphabet substitution yes
Could be homophonic substitution or possibly (more probably, in my estimation, polygram substitution. There is also the possibility of a polyalphabetic cipher...
I also likes "follows": "vkbcjtp" note how ll gets translated to "bc". That suggest that after some encryption of each letter from the plaintext there is a consecutively increasing number added.
This tends to suggest polyalphabetic substitution.
what do you mean, polyalphabetic substitution? - Igor.