[tor-dev] IMPT -- Re: Future Onion Addresses and Human Factors

2015-08-12 Thread Alec Muffett
Aside: in pursuit of helping Jake register “.onion” as a special name” in an 
RFC, I am currently being beaten-up on the IETF discussion mail-list regards 
the potential future length of onion addresses, and that they may possibly 
exceed the bounds of DNS’ maximum label length of 63 characters:

https://www.ietf.org/mail-archive/web/ietf/current/msg94332.html 
https://www.ietf.org/mail-archive/web/ietf/current/msg94332.html

The examples in Proposal 224 are a mere 53 characters long leaving 10 to play 
with for padding-hyphens and possibly checksum characters.

Nick: Is this likely to need to change? Or might there be a need to encode  
315 bits / 63 chars total?

-a

—
Alec Muffett
Security Infrastructure
Facebook Engineering
London



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Re: [tor-dev] IMPT -- Re: Future Onion Addresses and Human Factors

2015-08-12 Thread Nick Mathewson
On Wed, Aug 12, 2015 at 11:59 AM, Alec Muffett al...@fb.com wrote:
 Aside: in pursuit of helping Jake register “.onion” as a special name” in
 an RFC, I am currently being beaten-up on the IETF discussion mail-list
 regards the potential future length of onion addresses, and that they may
 possibly exceed the bounds of DNS’ maximum label length of 63 characters:

 https://www.ietf.org/mail-archive/web/ietf/current/msg94332.html

 The examples in Proposal 224 are a mere 53 characters long leaving 10 to
 play with for padding-hyphens and possibly checksum characters.

 Nick: Is this likely to need to change? Or might there be a need to encode 
 315 bits / 63 chars total?

I don't anticipate this changing.

If there were ever a need to encode more than that number of bits,
we'd add an extra label.
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