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fermilabs mystery letter: full cryptanalysis?

FIRST SECTION:

    1) remove the linebreaks from the first block

    2) interpret # of lines as digits 0-2

    3) results:

    212 122 220 001 021 222 120 211 012 201

    000 220 021 201 122 222 101 012 102 002
                                                                      
    200 222 202 220 002 002 222 121 211 022

    120 222 001 012 022 120 201


    4) Convert 000 == 'a' 001 == 'b', ... , '221' == 'z':

    5) Substition cipher:

        abcdefghijklmnopqrstuvwxyz

        nl   o ki wu   strdec hfa

    6) Results:
        xrybh pwftayhtr kflcs uycc qwip bfipt

        frank shoemaker would call this noise
                                                                                                    
THIRD SECTION:

1) break on '||'

2) Interpreted results & substitution cipher

    tadcfmtt blaztr zyppt pioqttb 
    employee number basse sixteen
MIDDLE SECTION:

1) 26-252




Nicely done!

Your own work? I'm impressed.




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