In the manuscript of the Leningrad Public Library O. XVI. 2 (Tolst. III, 27) p. 94 about. there is a key to the "flopyatsevsky alphabet" [1] (see. Fig.).
In this alphabet, the “darkened” alphabet consists of:
- ten Greek letters - "delta" for the letter E , "omega" for the letters I , U and O, "ipsilon" for the letters A , B and I, "ro" for the letter P , "sigma" for the letter C , "fi" for the letter F , “chi” for the Russian letter “xi” and “psi” for the Russian letter “psi”.
- six verbs - for letters B , D, D, L, M and P.
- nine Cyrillic substitutions - the letter L replaces the letter K in the letter , the letter I - F, the letter Ch changes the letter L and the letter b , the letter Z changes the letter O, M - W, the variants of the letter E - L and L, the letter K changes Yu.
- and thirteen specially designed characters .
In addition, for ten letters - B, D, D, I, L, M, O, P, P and H - the alphabet gives several styles, which may well be an advanced technique for that time of difficulty in decrypting cryptography . Of these ten letters, five - B, I, L, O and P - from the first ten of the most frequent letters of the modern Russian language . If we accept that in the Old Russian language the frequency characteristics of the use of letters did not differ much, then the choice of a dozen "complicated" letters does not seem random.
Another possible technique for complicating the decryption of cryptography is the use of slightly different versions of letter signs for different letters:
- So for one of the letters And, for the letter U and for the letter O , the sign "omega" is used. In the alphabetical table, these "omega" are clearly different, but in a letter they can be taken as one letter.
- For letters A and B, ipsilon variants are used.
- Similar coined characters for the letters M and W.
- Similar signs of H are used for the letters L and b.
According to the sign system, this cryptography in affinity with the cryptography:
- The key to cryptography from the 17th century chronograph .
- The key to the cryptography from the manuscript of the library of the Synod printing house No. 1028 .
- The key to Koptsev’s alphabet .
The number of common characters is shown in fig. 2.
See also
Comparison of four alphabet
Note
- ↑ Speransky (see lit.) Gives this alphabet as “Lopyatsevskaya” and indicates that the reading of its name begins with “fita”. (see. Fig.) But why he does not read “fita”, he does not say anything.
Literature
M. N. Speransky "Cryptography in the South Slavic and Russian monuments of writing", L., 1929