Bulgarian medieval cryptography
Bulgarian medieval cryptography is hidden, encrypted writing of certain texts in the Middle Ages. It dates from the 11th century. [1]
Bulgarian medieval writers usually write their name and place of writing in secret. Initially, the Glagolitic script was used in Cyrillic monuments as a secret letter. [1]
Some of the most common medieval Bulgarian cryptographic systems are known, which are of Byzantine origin. The most well-known is the interchange of letters whose numeric value is supplemented to 10, 100 and 1000. Only those Cyrillic letters that have Greek correspondences are included in this system, and the letters
Other mysterious systems are the interchange of consonant letters, arranged in two lines; the microscopic letter; the mirror letter and the monogram. [1]
There are no specialized studies in the field of Bulgarian medieval cryptography with a view to distribution in time and territorial scope. [1]
References
- „Старобългарска литература“. Енциклопедичен речник (съст. Д. Петканова). 2003, с. 503.