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Fri, 10 Feb 2023 20:07:38 -0800 (PST) MIME-Version: 1.0 Received: by 2002:adf:aac8:0:0:0:0:0 with HTTP; Fri, 10 Feb 2023 20:07:37 -0800 (PST) From: Lucio De Re Date: Sat, 11 Feb 2023 06:07:37 +0200 Message-ID: To: 9fans <9fans@9fans.net> Content-Type: text/plain; charset=UTF-8 Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: a3bb0000-a9c1-11ed-bf74-89079e86900c Archived-At: =?UTF-8?B?PGh0dHBzOi8vOWZhbnMudG9waWNib3guY29tL2dyb3Vwcy85?= =?UTF-8?B?ZmFucy9UYWIwYjA2MGVmNmY3NDgzMi1NM2FmOGRmZWZmZDllNDMyMGM3NGFi?= =?UTF-8?B?OTRhPg==?= List-Help: List-Id: "9fans" <9fans.9fans.net> List-Post: List-Software: Topicbox v0 List-Subscribe: Precedence: list Reply-To: 9fans <9fans@9fans.net> Subject: [9fans] Signature algorithms for P9P ssh-agent Content-Transfer-Encoding: quoted-printable List-Unsubscribe: , Topicbox-Delivery-ID: 2:9fans:437d30aa-c441-11e9-8a57-d036212d11b0:522be890-2105-11eb-b15e-8d699134e1fa:M3af8dfeffd9e4320c74ab94a:1:i0d50yzGCuSLeY7tqd9WGHUP8o60MT51PKI3XY_C98s Briefly: I hacked P9P's ssh-agent to handle my 4096-bit RSA key, but it still interacts poorly with conventional Linux/Debian installations of OpenSSH. The error message: agent key RSA SHA256:XXX...XXX returned incorrect signature type is explained as follows on stackoverflow: This message means that the SSH connection negotiated a connection using an RSA key with a different signature algorithm, either SHA-256 or SHA-512. However, the SSH agent, when asked to make the signature for that connection, provided an SHA-1 signature, which isn't in compliance with the agent protocol. Before I tackle the complexities of RSA encryption and decryption, is there a quick description of where I may be able to add the missing signature algorithm so I can upgrade the agent and/or factotum (Plan 9 rsaencrypt and rsaencrypt functions are the likely culprits, I just need some directions to avoid poorly re-inventing the wheel). Lucio. ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/Tab0b060ef6f74832-M3af8d= feffd9e4320c74ab94a Delivery options: https://9fans.topicbox.com/groups/9fans/subscription