They asked me for an old friend to help, decrypt one file. Decided to try.
I ran through the search for the reason for the extension - there is nothing like that. I ran through Google by the first characters, also nothing interesting and at least somewhat similar to the things I needed. I sat down to analyze the file, a bunch of manuals and megabytes of traffic did not bring me closer to solving the problem. Then I began to analyze the file. After composing the repeated combinations, I became thoughtful, there were about 8 of them. The condition was that it was a notebook, that is, a little more was to be used. Then again, all possible forums and manuals. Again, nothing even remotely similar. It seemed that the encrypting person tried very hard and created some kind of new cryptoalgorithm, however, the customer insisted that the person should not be at the level of the average user and such knowledge.
In general, this continued until late at night, quite a lot of encryption algorithms were scanned, but not one did not fit. Once again, it is useful to look at the file extensions (although how many times have I looked before). And here one line attracts me - Logo-world. Well, in order of delirium, the program was downloaded and the file was fed to it. And then the little turtle drew the phones. ')
Ps: and i'm the way i use pgp fool