(PowerShell) SFTP Host Key Fingerprint

See more SFTP Examples

Demonstrates how to get the SSH server's host key fingerprint after connecting.

Chilkat .NET Downloads Chilkat .NET Assemblies

Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

# This example assumes the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

$sftp = New-Object Chilkat.SFtp

$hostname = "sftp.example.com"
$port = 22
$success = $sftp.Connect($hostname,$port)
if ($success -ne $true) {
    $($sftp.LastErrorText)
    exit
}

# Get the classic MD5 fingeprint
$md5_fingerprint = $sftp.HostKeyFingerprint
$($md5_fingerprint)

# Sample output:
# ssh-rsa 3072 21:b0:d8:41:4e:ef:78:10:20:af:01:b7:71:5d:eb:94

# Starting in Chilkat v9.5.0.92, we can also get the SHA256 fingerprint.
# (it is also possible to get fingerprints using other hash algorithms such as SHA384, SHA512, etc.)

$includeKeyType = $true
$includeHashName = $true
$sha256_fingerprint = $sftp.GetHostKeyFP("SHA256",$includeKeyType,$includeHashName)
$($sha256_fingerprint)

# Sample output:
# ssh-rsa SHA256:Ufgj480OsdsCZRjj9sSNM6fpgIcSJ61RsIG8usndUIY=

# The key type and hash name can be optionally included or not.
$includeKeyType = $false
$includeHashName = $true
$sha256_fingerprint = $sftp.GetHostKeyFP("SHA256",$includeKeyType,$includeHashName)
$($sha256_fingerprint)

# SHA256:Ufgj480OsdsCZRjj9sSNM6fpgIcSJ61RsIG8usndUIY=

$includeKeyType = $true
$includeHashName = $false
$sha256_fingerprint = $sftp.GetHostKeyFP("SHA256",$includeKeyType,$includeHashName)
$($sha256_fingerprint)

# ssh-rsa Ufgj480OsdsCZRjj9sSNM6fpgIcSJ61RsIG8usndUIY=

$includeKeyType = $false
$includeHashName = $false
$sha256_fingerprint = $sftp.GetHostKeyFP("SHA256",$includeKeyType,$includeHashName)
$($sha256_fingerprint)

# Ufgj480OsdsCZRjj9sSNM6fpgIcSJ61RsIG8usndUIY=