Re: [Cfrg] How to handle block counter wrap in IETF's ChaCha algorithm?
James Cloos <cloos@jhcloos.com> Sat, 26 January 2019 16:03 UTC
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From: James Cloos <cloos@jhcloos.com>
To: Jeffrey Walton <noloader@gmail.com>
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Date: Sat, 26 Jan 2019 11:03:41 -0500
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Subject: Re: [Cfrg] How to handle block counter wrap in IETF's ChaCha algorithm?
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There was discussion on one of the ietf lists that the upper 32 bits should be incremented in such cases. Ie, treat it as 64/64 instead of 32/96 but with the upper 32 bits of the counter not always 0. I do not recall any objections to that at the time. (It just seemed obvious.) I'm surprised any implementations do otherwise. -JimC -- James Cloos <cloos@jhcloos.com> OpenPGP: 0x997A9F17ED7DAEA6
- [Cfrg] How to handle block counter wrap in IETF's… Jeffrey Walton
- Re: [Cfrg] How to handle block counter wrap in IE… Paterson, Kenny
- Re: [Cfrg] How to handle block counter wrap in IE… Stanislav V. Smyshlyaev
- Re: [Cfrg] How to handle block counter wrap in IE… James Cloos
- Re: [Cfrg] How to handle block counter wrap in IE… Taylor R Campbell
- Re: [Cfrg] How to handle block counter wrap in IE… Yoav Nir