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From "ASF GitHub Bot (Jira)" <j...@apache.org>
Subject [jira] [Work logged] (SSHD-506) Add support for aes128/256-gcm ciphers
Date Mon, 15 Jun 2020 16:56:00 GMT

     [ https://issues.apache.org/jira/browse/SSHD-506?focusedWorklogId=445934&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-445934
]

ASF GitHub Bot logged work on SSHD-506:
---------------------------------------

                Author: ASF GitHub Bot
            Created on: 15/Jun/20 16:55
            Start Date: 15/Jun/20 16:55
    Worklog Time Spent: 10m 
      Work Description: lgoldstein commented on pull request #132:
URL: https://github.com/apache/mina-sshd/pull/132#issuecomment-644251850


   >> Yes, I think so. I'm a little iffy on the BaseGCMCipher name for the class as
I'm imagining a different use of AES/GCM along the lines of how OpenSSH implements ChaCha20-Poly1305
which would behave differently (the additional authenticated data would be encrypted but not
authenticated using another AES key using AES/CTR like how in the packet length is encrypted).
   
   We'll cross that bridge when we come to it - refactoring is not a dirty word in this project


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Issue Time Tracking
-------------------

    Worklog Id:     (was: 445934)
    Time Spent: 6h 20m  (was: 6h 10m)

> Add support for aes128/256-gcm ciphers
> --------------------------------------
>
>                 Key: SSHD-506
>                 URL: https://issues.apache.org/jira/browse/SSHD-506
>             Project: MINA SSHD
>          Issue Type: Improvement
>            Reporter: Lyor Goldstein
>            Priority: Major
>          Time Spent: 6h 20m
>  Remaining Estimate: 0h
>
> See:
> * [rfc5647|https://tools.ietf.org/html/rfc5647]
> * [draft-igoe-secsh-aes-gcm-01|https://tools.ietf.org/html/draft-igoe-secsh-aes-gcm-01]
> * [OpenSSH v6.2|http://www.openssh.com/txt/release-6.2]
> * [JAVA AES 256 GCM encrypt/decrypt example|https://javainterviewpoint.com/java-aes-256-gcm-encryption-and-decryption/]
- especially the usage of {{GCMParameterSpec}} to initialize the cipher
> * [OpenJDK 8 AESCipher.java source code|https://github.com/frohoff/jdk8u-dev-jdk/blob/master/src/share/classes/com/sun/crypto/provider/AESCipher.java]
> ** See also [CipherCore.java|https://github.com/frohoff/jdk8u-dev-jdk/blob/master/src/share/classes/com/sun/crypto/provider/CipherCore.java],
[FeedbackCipher.java|https://github.com/frohoff/jdk8u-dev-jdk/blob/master/src/share/classes/com/sun/crypto/provider/FeedbackCipher.java],
[GaloisCounterMode.java|https://github.com/frohoff/jdk8u-dev-jdk/blob/master/src/share/classes/com/sun/crypto/provider/GaloisCounterMode.java]



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