Otobo might be a good other option. It’s a refreshed and expanded version of the classic OTRS. Yes perl, but in this space has an extensive track record.
I had a college professor suggest this and I 100% agree. I think of it as loading the problem in your brain. Then sleep on it and you will make a lot more progress in the morning than if you had just spent the same total time in one sitting.
Sell the data to hedge funds. I saw a company selling this data at an alternative data conference a few months ago. I can't remember of the name of the company but if you message me I'll find it.
You can run the decryption locally. The code is on git. The bigger concern is that the League of Entropy will disband and delete their keys permanently.