The DECODE Database Collection of Historical Ciphers and Keys.
Beáta Megyesi, Nils Blomqvist, Eva Pettersson · Uppsala University Publications (Uppsala University) · 2019
We present an on-line database DECODE consisting of encrypted historical manuscripts, aiming at the systematic collection of ciphers and keys to create infrastructural support for historical research in general, and historical cryptology in particular. The collected material is annotated with a metadata scheme developed specifically for historical ciphers. Information includes provenance and location of the manuscript, computer-readable transcription, possible decryption(s) of the ciphertext and translation(s) of the plaintext, images, and any additional materials of relevance to the particular manuscript. The database allows search in the existing collection and upload of new encrypted sources by users.