I'm currently dealing with multiple blowfish-encrypted files that share the same key. All are encrypted using ECB mode judging from their appearance. I don't know what the key is but I know 64 byte (or 6 blocks) of consecutive plaintext. The key length used is most certainly 448 bit.
Now, I just recently started to read up on this topic and I haven't been involved into cryptography before either. However I stumbled across this post on this site and it talks about precomputed tables to bruteforce the used key. I understand that the post is talking about a 40bit key so it eventually means that there is no way to use this in my situation.
But if it is, are there any tools to use for this scenario? I'm sadly lacking the skills to write them. I just want to be able to decrypt and re-encrypt the files.
Thank you very much for any reply.