AES Key finder solution

Sir, I have a good experience with networks security and cryptography. I can give it a try if provided with the file to decipher. Or I can suggest some solution based on a detailed description you provide. Either way I should be very useful if not having the optimal solution. You can contact me & check my profile for previous reviews. My best regards.

Dear Sir. I have read your description in carefully . I think your task means key of AES CFB Module. I have some experiences in this field. Please contact me. Best regards.