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(AutoIt) SSH Set Allowed AlgorithmsSee more SSH ExamplesDemonstrates how to explicitly set the algorithms allowed in the SSH connection protocol. Note: This example requires Chilkat v9.5.0.99 or greater.
; This example requires the Chilkat API to have been previously unlocked. ; See Global Unlock Sample for sample code. Local $bSuccess $oSsh = ObjCreate("Chilkat.Ssh") $oJson = ObjCreate("Chilkat.JsonObject") ; Here are the algorithms supported by Chilkat at the time this example was written (14-June-2024) ; --------------------------- ; SSH Key-Exchange Algorithms ; --------------------------- ; curve25519-sha256 ; curve25519-sha256@libssh.org ; ecdh-sha2-nistp256 ; ecdh-sha2-nistp384 ; ecdh-sha2-nistp521 ; diffie-hellman-group14-sha256 ; diffie-hellman-group16-sha512 ; diffie-hellman-group18-sha512 ; diffie-hellman-group-exchange-sha256 ; diffie-hellman-group1-sha1 ; diffie-hellman-group14-sha1 ; diffie-hellman-group-exchange-sha1 ; --------------------------- ; SSH Host Key Algorithms ; --------------------------- ; ssh-ed25519 ; ecdsa-sha2-nistp256 ; ecdsa-sha2-nistp384 ; ecdsa-sha2-nistp521 ; rsa-sha2-256 ; rsa-sha2-512 ; ssh-rsa ; ssh-dss ; --------------------------- ; SSH Cipher Algorithms ; --------------------------- ; chacha20-poly1305@openssh.com ; aes128-ctr ; aes256-ctr ; aes192-ctr ; aes128-cbc ; aes256-cbc ; aes192-cbc ; aes128-gcm@openssh.com ; aes256-gcm@openssh.com ; twofish256-cbc ; twofish128-cbc ; blowfish-cbc ; --------------------------- ; SSH MAC Algorithms ; --------------------------- ; hmac-sha2-256 ; hmac-sha2-512 ; hmac-sha2-256-etm@openssh.com ; hmac-sha2-512-etm@openssh.com ; hmac-sha1-etm@openssh.com ; hmac-sha1 ; hmac-ripemd160 ; hmac-sha1-96 ; hmac-md5 ; Specify the allowed key-exchange, host-key, cipher (i.e. encryption), and mac (i.e. hash) algorithms allowed, in the order of preference. ; ------------------------------------------------------------------------------------------------------------------------------------------- ; Note: You typically should NOT explicitly set allowed algorithms. ; By default, Chilkat orders algorithms according to best practices, and pays attention to vulnerabilities such as the "Terrapin Attack". ; Hard-coding algorthims can make your application brittle and prone to breaking over a long period of time, ; if a server (at some point in the future) changes its allowed algorithms, or if you connect to a different server, ; such that the client (Chilkat) and server cannot find a set of mutually agreed-upon algorithms. ; ------------------------------------------------------------------------------------------------------------------------------------------- Local $sAllowed_kex = "curve25519-sha256@libssh.org,ecdh-sha2-nistp256" Local $sAllowed_hostKey = "ssh-ed25519,ecdsa-sha2-nistp256" Local $sAllowed_cipher = "chacha20-poly1305@openssh.com,aes256-ctr" Local $sAllowed_mac = "hmac-sha2-256,hmac-sha2-512" $oJson.UpdateString("kex",$sAllowed_kex) $oJson.UpdateString("hostKey",$sAllowed_hostKey) $oJson.UpdateString("cipher",$sAllowed_cipher) $oJson.UpdateString("mac",$sAllowed_mac) $oSsh.SetAllowedAlgorithms($oJson) Local $iPort = 22 $bSuccess = $oSsh.Connect("example.com",$iPort) If ($bSuccess <> True) Then ConsoleWrite($oSsh.LastErrorText & @CRLF) Exit EndIf ConsoleWrite("Connected." & @CRLF) ; .... ; .... |
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