[tor-dev] [RFC] Proposal for the encoding of prop224 onion addresses

Taylor R Campbell campbell+tor-dev at mumble.net
Tue Jan 24 17:02:41 UTC 2017

   Date: Tue, 24 Jan 2017 12:40:00 +0000
   From: segfault <segfault at riseup.net>

   But maybe it would help to separate them into groups of 4 characters,
   separated maybe by a dash, which would make them look like this:


This exceeds the maximum length of a DNS label, 63 octets[1].  One
could use larger groups to avoid that, of course -- e.g., with eight
octets per group you get down to 62:


[1] P. Mockapetris, `Domain Names - Concepts and Facilities',
RFC 1034, IETF, 1987, Sec. 3.1 `Name space specifications and
terminology', p. 7.

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