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https://issues.apache.org/jira/browse/SSHD-1017?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17216843#comment-17216843
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Jeremy Norris commented on SSHD-1017:
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Yes, I too spent a lot of time staring at the OpenSSH code to figure out how to
make this work as well in JSch. :)
FYI, I'm not sure if you have followed the work over at the JSch fork on
Github, but I've spent a bit of time the past few months updating it to add
support many of the newer crypto primitives (rsa-sha2-256, rsa-sha2-512,
curve25519-sha256, curve448-sha512, ssh-ed25519, ssh-ed448, and all the ETM
Macs). I also built an integration test suite using Testcontainers to attempt
to validate these implementations against other live implementations (OpenSSH,
Dropbear & AsyncSSH).
> Add support for [email protected]
> ---------------------------------------------
>
> 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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