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From "Jeremy Norris (Jira)" <j...@apache.org>
Subject [jira] [Commented] (SSHD-1017) Add support for chacha20-poly1305@openssh.com
Date Mon, 19 Oct 2020 15:06:00 GMT

    [ https://issues.apache.org/jira/browse/SSHD-1017?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17216798#comment-17216798
] 

Jeremy Norris commented on SSHD-1017:
-------------------------------------

FYI, I forgot to note that the OpenJAX implementation does not use any BigInteger math: it
purely uses regular integer math.

> 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
>
> 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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