Hi Folks, I've come to face the difficult (or impossible) task of decrypting a file encrypted using AES-256. Was wondering if any of you would have some helpful suggestions to impart.
It's a windows-based software (SafeGuard Portable from Sophos). It asks for a password for file decryption. Unfortunately, the owner of the files has misplaced the password and has contacted me for help. I've informed him of the sheer difficulty in computing the possibilities (32 char passphrase) and my lack of expertise in the same. Also, I do not have access to any specialised hardware for super fast computing. So the only sane option for me is to brute force it using an intelligent dictionary- created from permutations and combinations of all strings that the person considers as valid candidates for the password. Now, the question is whether there are tools that allow me to generate the intelligent dictionary (created as mentioned above), submit entries in it to the windows software one by one (no command line options or APIs available for this software as per my research) and can recognise it if a successful decryption happens. Please suggest any practical solution and correct me if my approach is wrong. Thanks & Regards, Reuben Kurien
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