Re: phasing out SHA1 for digest creation

Wiktor Kwapisiewicz via Gnupg-devel <[email protected]>
Newsgroups gmane.comp.encryption.gpg.devel
Organization Metacode
Message-ID <[email protected]>
On 6.12.2024 01:54, Jacob Bachmeyer via Gnupg-devel wrote:
> This could be as simple as including a nonce in the signature.

Just for the record, due to the way of how OpenPGP hashes files, there's 
plenty of other metadata influencing the final hash e.g. signature 
creation time (I guess it's rather improbable that the attacker would 
control that up to a second precision; it's not a high entropy data 
though; also: some implementations embed nonce data in notations).

Kind regards,
Wiktor
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