Encyclopedia Americana, Volume 8Americana Corporation, 1965 - Encyclopedias and dictionaries |
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Page 270
... letter with that two places later . A commoner method is to write out the alpha- bet with another in irregular order below it : - Clear letters ABCDEFGHIJKLM Cipher letters CHINRES TAB DFG Clear letters NOPQRSTUVW X Y Z Cipher letters ...
... letter with that two places later . A commoner method is to write out the alpha- bet with another in irregular order below it : - Clear letters ABCDEFGHIJKLM Cipher letters CHINRES TAB DFG Clear letters NOPQRSTUVW X Y Z Cipher letters ...
Page 272
... letters , the message is written in three lines , each of which will have been ciphered with the same key letter . Each of these lines is then a simple substitution cipher and may be solved by means of letter frequencies , when enough ...
... letters , the message is written in three lines , each of which will have been ciphered with the same key letter . Each of these lines is then a simple substitution cipher and may be solved by means of letter frequencies , when enough ...
Page 273
... letters , inserting X or Z between doubled letters , and ciphered as follows . ( 1 ) If the two letters of a pair fall in the same line , each letter is replaced by that to the right of it in the line : NO is ciphered OQ , BD is ...
... letters , inserting X or Z between doubled letters , and ciphered as follows . ( 1 ) If the two letters of a pair fall in the same line , each letter is replaced by that to the right of it in the line : NO is ciphered OQ , BD is ...
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