cracking encrypted xls file.

Trying to crack an xls file in 97-03 format. Trying to open the worksheet xml from zip is worthless as its all encrypted gibberish in text. No luck using the msoffice-crypt tool it returns successful but does nothing. I don't want to brute force it I know there must be a way to bypass or extract the key any suggestions?

submitted by /u/CyberMassiah
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from hacking: security in practice https://ift.tt/mEV2AUp

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