Uknown decrypt failure after handshake

[bglasgo]

After working to add the ciphers and algos i needed to complete the handshake process, I run into a decryption error with seemingly no explanation. I can use the sshd command line on the same machine to make this connection without issues. Unfortunately the device doesnt offer any other options for ciphers than 3des-cbc. Anything else I can provide for info please let me know.

Local ident: 'SSH-2.0-ssh2js1.3.0'
Socket connected
Remote ident: 'SSH-2.0-RomSShell_4.31'
Outbound: Sending KEXINIT
Inbound: Handshake in progress
Handshake: (local) KEX method: diffie-hellman-group1-sha1
Handshake: (remote) KEX method: diffie-hellman-group1-sha1
Handshake: KEX algorithm: diffie-hellman-group1-sha1
Handshake: (local) Host key format: ssh-dss
Handshake: (remote) Host key format: ssh-dss
Handshake: Host key format: ssh-dss
Handshake: (local) C->S cipher: 3des-cbc
Handshake: (remote) C->S cipher: 3des-cbc
Handshake: C->S Cipher: 3des-cbc
Handshake: (local) S->C cipher: 3des-cbc
Handshake: (remote) S->C cipher: 3des-cbc
Handshake: S->C cipher: 3des-cbc
Handshake: (local) C->S MAC: hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
Handshake: (remote) C->S MAC: hmac-sha1
Handshake: C->S MAC: hmac-sha1
Handshake: (local) S->C MAC: hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
Handshake: (remote) S->C MAC: hmac-sha1
Handshake: S->C MAC: hmac-sha1
Handshake: (local) C->S compression: none,zlib@openssh.com,zlib
Handshake: (remote) C->S compression: none
Handshake: C->S compression: none
Handshake: (local) S->C compression: none,zlib@openssh.com,zlib
Handshake: (remote) S->C compression: none
Handshake: S->C compression: none
Outbound: Sending KEXDH_INIT
Received DH Reply
Host accepted by default (no verification)
Host accepted (verified)
Outbound: Sending NEWKEYS
Inbound: NEWKEYS
Verifying signature ...
Verified signature
Handshake completed
Outbound: Sending SERVICE_REQUEST (ssh-userauth)
events.js:377
throw er; // Unhandled 'error' event
^

Error: Unknown decrypt failure
at GenericDecipherBinding.decrypt

Here is my code which is mostly just a copy paste of the example except for the algorithms i provided.

const conn = new Client(); return new Promise((resolve, reject) => { conn.on('ready', () => { conn.exec(cmd, (err, stream) => { if (err) { reject(err) } stream.on('close', (code, signal) => { if (code !== 0) { reject(code) } conn.end() resolve(code) }).stderr.on('data', (data) => { reject(data) }) }) }).connect({ host: '0.0.0.0', port: 22, username: 'xxxxxxxx', password: 'xxxxxxxxxxx', algorithms: { kex: [ "diffie-hellman-group1-sha1" ], serverHostKey: ["ssh-dss"], cipher: ["3des-cbc"] }, debug: (s) => {console.log(s)} }) })

[mscdex]

I was able to duplicate the issue and it should be fixed now in the master branch. Please let me know if it works for you as well.

[bglasgo]

Awesome, that cleared up the blockage and I got past user authentication. I wish I could code as fast as you! That looked like a lot of stuff!