From c5315649bdae1d4ab7d5218a48aa129f9626daf2 Mon Sep 17 00:00:00 2001
From: zzz <zzz@mail.i2p>
Date: Mon, 27 Apr 2020 19:48:40 +0000
Subject: [PATCH] prop. 144 updates after review
---
.../144-ecies-x25519-aead-ratchet.rst | 23 +++++++++----------
1 file changed, 11 insertions(+), 12 deletions(-)
diff --git a/i2p2www/spec/proposals/144-ecies-x25519-aead-ratchet.rst b/i2p2www/spec/proposals/144-ecies-x25519-aead-ratchet.rst
index 38a36bd40..adaae8963 100644
--- a/i2p2www/spec/proposals/144-ecies-x25519-aead-ratchet.rst
+++ b/i2p2www/spec/proposals/144-ecies-x25519-aead-ratchet.rst
@@ -2282,7 +2282,7 @@ There are zero or more blocks in the encrypted frame.
Each block contains a one-byte identifier, a two-byte length,
and zero or more bytes of data.
-For extensibility, receivers must ignore blocks with unknown identifiers,
+For extensibility, receivers MUST ignore blocks with unknown type nunmbers,
and treat them as padding.
Encrypted data is 65535 bytes max, including a 16-byte authentication header,
@@ -2473,9 +2473,10 @@ Justification:
Termination
```````````
-UNIMPLEMENTED, for further study.
+Implementation is optional.
Drop the session.
This must be the last non-padding block in the frame.
+No more messages will be sent in this session.
Not allowed in NS or NSR. Only included in Existing Session messages.
@@ -2484,22 +2485,17 @@ Not allowed in NS or NSR. Only included in Existing Session messages.
{% highlight lang='dataspec' %}
+----+----+----+----+----+----+----+----+
- | 4 | size | valid data frames
- +----+----+----+----+----+----+----+----+
- received | rsn| addl data |
+ | 4 | size | rsn| addl data |
+----+----+----+----+ +
~ . . . ~
+----+----+----+----+----+----+----+----+
blk :: 4
- size :: 2 bytes, big endian, value = 9 or more
- valid data frames received :: The number of valid AEAD data phase frames received
- (current receive nonce value)
- 0 if error occurs in handshake phase
- 8 bytes, big endian
+ size :: 2 bytes, big endian, value = 1 or more
rsn :: reason, 1 byte:
0: normal close or unspecified
1: termination received
+ others: optional, impementation-specific
addl data :: optional, 0 or more bytes, for future expansion, debugging,
or reason text.
Format unspecified and may vary based on reason code.
@@ -2560,8 +2556,11 @@ Issues:
Message Numbers
```````````````
-UNIMPLEMENTED, for further study.
+Implementation is optional.
The length (number of messages sent) in the previous tag set (PN).
+Receiver may immediately delete tags higher than PN from the previous tag set.
+Receiver may expire tags less than or equal to PN from the previous tag set
+after a short time (e.g. 2 minutes).
.. raw:: html
@@ -3141,7 +3140,7 @@ Recommended parameters and timeouts:
- ES tagset 0 size: tsmin 24, tsmax 160
- ES tagset (1+) size: 160 tsmin and tsmax
- NSR tagset timeout: 3 minutes for receiver
-- ES tagset timeout: 12 minutes for sender, 15 minutes for receiver
+- ES tagset timeout: 8 minutes for sender, 10 minutes for receiver
- Remove previous ES tagset after: 3 minutes
- Tagset look ahead of tag N: min(tsmax, tsmin + N/4)
- Tagset trim behind tag N: min(tsmax, tsmin + N/4) / 2
--
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