commit 9949f649b0ce88d8acf6735b07d8840ff3690d78 Author: George Kadianakis desnacked@riseup.net Date: Fri Feb 26 12:58:17 2016 +0100

Add shared randomness (prop250) info to dir-spec.txt . --- dir-spec.txt | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+)

diff --git a/dir-spec.txt b/dir-spec.txt index 8a8b583..2db035c 100644 --- a/dir-spec.txt +++ b/dir-spec.txt @@ -1664,6 +1664,51 @@ enough votes were counted for the consensus for an authoritative opinion to have been formed about their status.

+ "shared-rand-participate" NL + + [At most once for votes; does not occur in consensuses.] + + Denotes that the directory authority supports and can participate in the + shared random protocol. + + "shared-rand-commit" SP AlgName SP Identity SP Commit [SP Reveal] NL + + [Any number for votes; does not occur in consensuses.] + + AlgName ::= 1*(ALPHA / DIGIT / "_" / "-") + Identity ::= 40 * HEXDIG + Commit ::= Base64-encoded-data + Reveal ::= Base64-encoded-data + + A commit of a directory authority for the shared randomness protocol, + containing the commitment value and potentially also the reveal + value. AlgName is the hash algorithm that is used and Identity is the + authority's SHA1 identity fingerprint. Commit is the encoded commitment + value in base64. Reveal is optional and if it's set, it contains the + reveal value in base64. + + "shared-rand-previous-value" SP NumReveals SP Value NL + + [At most once.] + + NumReveals ::= An integer greater or equal to 0. + Value ::= Base64-encoded-data + + The previous shared random value. Value is the actual shared random + value encoded in base64. NumReveals is the number of commits used to + generate this SRV. + + "shared-rand-current-value" SP NumReveals SP Value NL + + [At most once.] + + NumReveals ::= An integer greater or equal to 0. + Value ::= Base64-encoded-data + + The current shared random value. Value is the actual shared random value + encoded in base64. NumReveals is the number of commits used to generate + this SRV. + "params" SP [Parameters] NL

[At most once] @@ -1795,6 +1840,12 @@ Min: 0. Max: 1. Default: 0. First-appeared: 0.2.3.11-alpha

+ "AuthDirNumSRVAgreements" -- Minimum number of agreeing directory + authority votes required for a fresh shared random value to be written + in the consensus (this rule only applies on the first commit round of + the shared randomness protocol). + Min: 1. Max: INT32_MAX. Default: 2/3 of the total number of dirauth. + The authority section of a vote contains the following items, followed in turn by the authority's current key certificate:

@@ -2406,6 +2457,9 @@ the "s" line for every relay whose listed Ed key does not reflect consensus.

+ * If consensus method 23 or later is used, authorities include + shared randomness protocol data on their votes and consensus. + The signatures at the end of a consensus document are sorted in ascending order by identity digest.