DataFlex

SFTP Host Key Fingerprint

See more SFTP Examples

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

Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Handle hoSftp
    String sHostname
    Integer iPort
    String sMd5_fingerprint
    Boolean iIncludeKeyType
    Boolean iIncludeHashName
    String sSha256_fingerprint
    String sTemp1

    Move False To iSuccess

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

    Get Create (RefClass(cComChilkatSFtp)) To hoSftp
    If (Not(IsComObjectCreated(hoSftp))) Begin
        Send CreateComObject of hoSftp
    End

    Move "sftp.example.com" To sHostname
    Move 22 To iPort
    Get ComConnect Of hoSftp sHostname iPort To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoSftp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Get the classic MD5 fingeprint
    Get ComHostKeyFingerprint Of hoSftp To sMd5_fingerprint
    Showln sMd5_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.)

    Move True To iIncludeKeyType
    Move True To iIncludeHashName
    Get ComGetHostKeyFP Of hoSftp "SHA256" iIncludeKeyType iIncludeHashName To sSha256_fingerprint
    Showln sSha256_fingerprint

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

    // The key type and hash name can be optionally included or not.
    Move False To iIncludeKeyType
    Move True To iIncludeHashName
    Get ComGetHostKeyFP Of hoSftp "SHA256" iIncludeKeyType iIncludeHashName To sSha256_fingerprint
    Showln sSha256_fingerprint

    // SHA256:Ufgj480OsdsCZRjj9sSNM6fpgIcSJ61RsIG8usndUIY=

    Move True To iIncludeKeyType
    Move False To iIncludeHashName
    Get ComGetHostKeyFP Of hoSftp "SHA256" iIncludeKeyType iIncludeHashName To sSha256_fingerprint
    Showln sSha256_fingerprint

    // ssh-rsa Ufgj480OsdsCZRjj9sSNM6fpgIcSJ61RsIG8usndUIY=

    Move False To iIncludeKeyType
    Move False To iIncludeHashName
    Get ComGetHostKeyFP Of hoSftp "SHA256" iIncludeKeyType iIncludeHashName To sSha256_fingerprint
    Showln sSha256_fingerprint

    // Ufgj480OsdsCZRjj9sSNM6fpgIcSJ61RsIG8usndUIY=


End_Procedure