Trithemius Ave Maria Decoder
Trithemius Ave Maria Encoder
Answers to Questions
How to encrypt a litany according to Trithemius?
Encryption uses a correlation table between letters and portions of psalms. Trithemius wrote a book (Polygraphiae - Ioannes Trithemius) which contains a hundred pages with Latin words associated with a letter of the alphabet.
The first page contains the following associations:
The Latin alphabet does not have all the letters, there is no V or W replaced by U, there is no J, replaced by I, and so on.
Encryption consists in encoding each letter of the message with a word in the list, the result will resemble a prayer/litany in Latin.
Example: To encrypt DCODE, use a word for D: opifex or piissimus, same with C, O etc. and get the following poem: Opifex pius
It is possible to fill in the text with other words to better link each component.
How to decrypt an Ave Maria Trithemius cipher?
Decryption requires to find the correspondence of each word in the book Polygraphia from Trithemius.
Example: For the poem
Search opifex which corresponds to D then pius for C etc.
The plain message is DCODE.
How to recognize an Ave Maria from Trithemius?
The cipher is composed of Latin words generally related to God.
The encrypted message is much longer than the plain text (since it replaces letters with words).
When Ave Maria ciphers have been invented ?
Trithemius (born in 1462) would have written Steganographia in 1499 but it would have only been published in the early 17th century.