I am trying to backup some files that have been encrypted by a 3rd party solution we use in work. I would like to back them up in their unencrypted state as our backup solution has robust encryption option. It's also worth noting that the files do not need the 3rd party software to be of use to us.
The 3rd party solution has very little documentation on their encryption process but I have the key which is stored in the database that indexes the encrypted files. I also have access to the files which the databases references.
The only problem is that I don't know what encryption algorithm the 3rd party company used to encrypt the data.
Is there any technique I can use to determining the type of encryption used or is there a software tool that would allow me to easily try a number of different decryption routines and a set password?