ExternalVendorCode/tahoe-lafs
1
0
Fork 0
mirror of https://github.com/tahoe-lafs/tahoe-lafs.git synced 2025-01-18 18:56:28 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Make this more accurate given changes in spec.

Browse Source
This commit is contained in:
Itamar Turner-Trauring 2022-10-03 11:00:34 -04:00
parent 8179ea7738
commit b86f99f0eb
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
docs/specifications/url.rst
View File

@ -87,11 +87,13 @@ These differences are separated into distinct versions.
Version 0
---------
A Foolscap fURL is considered the canonical definition of a version 0 NURL.
In theory, a Foolscap fURL with a single netloc is considered the canonical definition of a version 0 NURL.
Notably,
the hash component is defined as the base32-encoded SHA1 hash of the DER form of an x509v3 certificate.
A version 0 NURL is identified by the absence of the ``v=1`` fragment.
In practice, real world fURLs may have more than one netloc, so lack of version fragment will likely just involve dispatching the fURL to a different parser.
Examples
~~~~~~~~
@ -119,7 +121,7 @@ The hash component of a version 1 NURL differs in three ways from the prior vers
*all* certificate fields should be considered within the context of the relationship identified by the SPKI hash.
3. The hash is encoded using urlsafe-base64 (without padding) instead of base32.
This provides a more compact representation and minimizes the usability impacts of switching from a 160 bit hash to a 224 bit hash.
This provides a more compact representation and minimizes the usability impacts of switching from a 160 bit hash to a 256 bit hash.
A version 1 NURL is identified by the presence of the ``v=1`` fragment.
Though the length of the hash string (38 bytes) could also be used to differentiate it from a version 0 NURL,