commit af547b7855183447e1eb194961f8914c32e47d94 Author: George Kadianakis desnacked@riseup.net Date: Tue Apr 25 17:42:24 2017 +0300

prop224: Hash time period length wherever we use period_num.

See review point: https://gitlab.com/dgoulet/tor/merge_requests/27#note_27696937 --- proposals/224-rend-spec-ng.txt | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/proposals/224-rend-spec-ng.txt b/proposals/224-rend-spec-ng.txt index 8945239..2156f39 100644 --- a/proposals/224-rend-spec-ng.txt +++ b/proposals/224-rend-spec-ng.txt @@ -784,17 +784,20 @@ Table of contents: hs_index(replicanum) = H("store-at-idx" | blinded_public_key | INT_8(replicanum) | + INT_8(period_length) | INT_8(period_num) )

- where blinded_public_key is specified in section [KEYBLIND], and period_num - is calculated using the current consensus "valid-after" as specified in - section [TIME-PERIODS]. + where blinded_public_key is specified in section [KEYBLIND], period_length + is the length of the time period in minutes, and period_num is calculated + using the current consensus "valid-after" as specified in section + [TIME-PERIODS].

Then, for each node listed in the current consensus with the HSDirV3 flag, we compute a directory index for that node as:

hsdir_index(node) = H("node-idx" | node_identity | shared_random_value | + INT_8(period_length) | INT_8(period_num) )

where shared_random_value is the shared value generated by the authorities @@ -903,10 +906,11 @@ Table of contents:

To do so, Tor clients and services use:

- SRV = H("shared-random-disaster" | INT_8(period_num)) + SRV = H("shared-random-disaster" | INT_8(period_length) | INT_8(period_num))

- where period_num is calculated as specified in [TIME-PERIODS] for the - wanted shared random value that could not be found originally. + where period_length is the length of a time period in minutes, period_num is + calculated as specified in [TIME-PERIODS] for the wanted shared random value + that could not be found originally.

2.3.2. Hidden services and changing shared random values

@@ -2052,7 +2056,7 @@ Appendix A. Signature scheme with key blinding [KEYBLIND] proof of this scheme.

(To use this with Tor, set N = "key-blind" | INT_8(period-number) | - INT_8(Start of period in seconds since epoch).) + INT_8(period_length).)

Appendix B. Selecting nodes [PICKNODES]