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From "ASF GitHub Bot (Jira)" <j...@apache.org>
Subject [jira] [Work logged] (SSHD-1017) Add support for chacha20-poly1305@openssh.com
Date Sat, 24 Oct 2020 23:01:00 GMT

     [ https://issues.apache.org/jira/browse/SSHD-1017?focusedWorklogId=504521&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-504521

ASF GitHub Bot logged work on SSHD-1017:

                Author: ASF GitHub Bot
            Created on: 24/Oct/20 23:00
            Start Date: 24/Oct/20 23:00
    Worklog Time Spent: 10m 
      Work Description: jvz opened a new pull request #176:
URL: https://github.com/apache/mina-sshd/pull/176

   This uses BouncyCastle due to OpenSSH using the non-RFC variant of ChaCha20 as well as
having a direct implementation of Poly1305 (Java 11 does not expose the Poly1305 mac engine).
   Some ideas on simplification adapted from https://github.com/mwiede/jsch/pull/17

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Issue Time Tracking

            Worklog Id:     (was: 504521)
    Remaining Estimate: 0h
            Time Spent: 10m

> Add support for chacha20-poly1305@openssh.com
> ---------------------------------------------
>                 Key: SSHD-1017
>                 URL: https://issues.apache.org/jira/browse/SSHD-1017
>             Project: MINA SSHD
>          Issue Type: New Feature
>            Reporter: Matt Sicker
>            Priority: Major
>          Time Spent: 10m
>  Remaining Estimate: 0h
> See [protocol details|https://github.com/openbsd/src/blob/master/usr.bin/ssh/PROTOCOL.chacha20poly1305].
> * [RFC 7539|https://tools.ietf.org/html/rfc7539] describes the ChaCha20-Poly1305 algorithm.
> * [Dropbear implementation|https://github.com/mkj/dropbear/blob/master/chachapoly.c]
> * [OpenSSH implementation|https://github.com/openbsd/src/blob/master/usr.bin/ssh/cipher-chachapoly-libcrypto.c]
> The cipher is provided by Bouncycastle.
> As a bonus, this could potentially be adapted to propose an equivalent AES/GCM cipher
encoding to how OpenSSH implements this ChaCha20-Poly1305 cipher.

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