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I asked this question on stackoverflow, but thought it may be more appropriate here.

I have a key from a RC4 encrypted excel sheet (xls), along with the salt, and hash, etc. and I have decrypted the file using this program.

Is there a way to recover the password that was used from this information?

  • Are you asking if the password you used to decrypt the file was the one used by the person who encrypted the file? – Steffen Ullrich Dec 2 '15 at 4:54
  • @SteffenUllrich If that is the case, it would be nice. I am trying to find a way to calculate the password used to encrypt the file if I have a key along with the password salt, etc. I thought that the key would be different than the password, but perhaps I am wrong? If the key is the password, then I would just have to convert the bits into characters right? I just didn't think it would be that easy, since there is a password salt. I apologize if my knowledge of encryption is very lacking. – chase Dec 2 '15 at 20:12
  • According to auntitled.blogspot.de/2010/12/… MD5 is used to derive they key from the password. So there is no easy way to derive the original password and brute-forcing might be the easiest way. – Steffen Ullrich Dec 2 '15 at 20:47

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