Thanks for your interest in helping me. I’ve spent the better part of the past few days trying to solve this issue.
First, I am on an 2017 iMac and using Boxcryptor 3x
I am happy to report that I solved the problem, but not without incredible efforts.
Perhaps this will help others, so I’m providing the steps I took to retrieve and decrypt my files.
First and most important, I downgraded to Boxcryptor Version 2.x.
To do this, I had to remove all traces of Boxcryptor 3. So I used a free utility called FindFile and searched my entire hard disk for the phrase “Boxcryptor”. I then used FindFile to delete all program and system files with that phrase.
Then, I downloaded and reinstalled Boxcryptor 2. I logged into Boxcryptor re-established my account. I then reconnected DropBox to Boxcryptor 2.
Using a Time Machine backup from 2022, (before I upgraded to Boxcryptor 3), I restored all files in the folder I needed to an external SSD drive. All the files from this TimeMachine backup were still encrypted with .bc .
Following the TimeMachine restore of the folder to the external Hard drive, I copied the folder from the external drive to the new install of Boxcryptor 2 to Boxcryptor/Dropbox on my internal drive. It asked me if I wanted to encrypt them (they already were) and I chose “no”. So the files (7.7 gigs!) all slowly copied to DropBox inside Boxcryptor. It was such a slow process that I gathered it was decrypting them as they were copied. And indeed they were all decrypted!!
Following the transfer and decryption into DropBox, I copied the files out of Boxcryptor/DropBox folder to my Documents folder (all now unencrypted).
These 7.7 gigs of files are/were essential for my business records. In retrospect, I think the transition to Boxcryptor 3.x months ago was a mistake. I don’t think the first version of 3.x released was ready for prime time. I’m not so sure that the current 3.x version is without flaws. I hope DropBox knows what they’re really buying. I’ll have to find a new way to securely store my files.
