SQL Server

SSH Key Fingerprint

See more SSH Key Examples

Generates a fingerprint for an SSH key. SQL Server

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 0

    DECLARE @key int
    EXEC @hr = sp_OACreate 'Chilkat.SshKey', @key OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- Load an SSH key from an encrypted OpenSSH-formatted private key:
    EXEC sp_OASetProperty @key, 'Password', 'secret'

    DECLARE @keyStr nvarchar(4000)

    -- First load the PEM into a string:
    EXEC sp_OAMethod @key, 'LoadText', @keyStr OUT, 'privkey_openssh_encrypted.pem'

    -- Import into the SSH key object:
    EXEC sp_OAMethod @key, 'FromOpenSshPrivateKey', @success OUT, @keyStr
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @key, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @key
        RETURN
      END

    -- Generate the fingerprint:
    DECLARE @fingerprint nvarchar(4000)

    EXEC sp_OAMethod @key, 'GenFingerprint', @fingerprint OUT


    PRINT @fingerprint

    -- A sample fingerpring looks like this:
    -- ssh-dss 2048 d0:5f:f7:d6:49:60:7b:50:19:f4:41:59:d4:1f:61:7

    EXEC @hr = sp_OADestroy @key


END
GO