As the sole author of the encryption algorithms that are integrated in the Priory Toolbox it is relatively difficult to provide an unbiased opinion regarding the strength and efficacy of those algorithms.
Any party who might have some capacity to offer an informed, independent assessment in this respect would be very welcome to make contact.
A search of the internet will, however, identify a number of sites that might assist in ciphertext decoding. These sites were visited and, using the ciphertext that was obtained by encryption of a single paragraph taken from the Magna Carta, the tools that they offered were tested in order to provide relevant information regarding the strength of our encryption algorithms.
Was unable to offer any meaningful commentary regarding the submitted ciphertext.
An analysis of the submitted ciphertext identified it as being highly ikely to be Base91 Encoding or ASCII85 Encoding.
Using tools on this site for decryption of the submitted ciphertext as Base91 Encoded (binary encoded ASCII using 91 characters) did NOT yield any positive result and a similar tool relating to ASCII85 Encoding (binary-to-text encoding developed by Paul E. Rutter) was unable to process the ciphertext.
This site identified 5 further potential lesser possibilities being Substitution Cipher, Shift Cipher, Homophonic Cipher, UUencode or Base45 Encoding.
A further facility to test Mono Alphabetic substitution was attempted and failed whilst additional tools relating to Shift Cipher, Homophonic Cipher, UUEncode and Base45 Encoding all failed to offer any prospect of decoding the ciphertext.