Comment on OfficerBreaker – pptx/docx/xlsx password removerparentComments−martinko4yI feel like a hash of the contents + some secret bytes could be a convincing signature that only the owners of the secret bytes could author.How would you validate the signature?−noodlesUK4yParent is describing a keyed HMAC scheme. JWTs sometimes use them, but key management is a massive PITA.
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How would you validate the signature?
Parent is describing a keyed HMAC scheme. JWTs sometimes use them, but key management is a massive PITA.