Generate DSA SSH Key

Generates a DSA SSH key and saves to various public and private key file formats (OpenSSH and PuTTY).

Download Chilkat SSH / SFTP ActiveX

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

    DECLARE @success int

    DECLARE @numBits int

    --  numBits should be a minimum of 1024 and
    --  a multiple of 64.  Typical values are
    --  1024 or 2048.
    SELECT @numBits = 2048
    EXEC sp_OAMethod @key, 'GenerateDsaKey', @success OUT, @numBits
    IF @success <> 1
      BEGIN

        PRINT 'Invalid numBits passed to DSA key generation method.'
        RETURN
      END

    --  Note: Generating a public/private key pair is CPU intensive
    --  and may take a short amount of time (more than few seconds,
    --  but less than a minute).

    DECLARE @exportedKey nvarchar(4000)

    DECLARE @exportEncrypted int

    --  Export the DSA private key to OpenSSH, PuTTY, and XML and save.
    SELECT @exportEncrypted = 0
    EXEC sp_OAMethod @key, 'ToOpenSshPrivateKey', @exportedKey OUT, @exportEncrypted
    --  Chilkat provides a SaveText method for convenience...
    EXEC sp_OAMethod @key, 'SaveText', @success OUT, @exportedKey, 'privkey_openssh_unencrypted.pem'

    --  Export with encryption to OpenSSH private key format:
    EXEC sp_OASetProperty @key, 'Password', 'secret'
    SELECT @exportEncrypted = 1
    EXEC sp_OAMethod @key, 'ToOpenSshPrivateKey', @exportedKey OUT, @exportEncrypted
    EXEC sp_OAMethod @key, 'SaveText', @success OUT, @exportedKey, 'privkey_openssh_encrypted.pem'

    --  Export the DSA private key to unencrypted PuTTY format:
    SELECT @exportEncrypted = 0
    EXEC sp_OAMethod @key, 'ToPuttyPrivateKey', @exportedKey OUT, @exportEncrypted
    EXEC sp_OAMethod @key, 'SaveText', @success OUT, @exportedKey, 'privkey_putty_unencrypted.ppk'

    --  Export the DSA private key to encrypted PuTTY format:
    EXEC sp_OASetProperty @key, 'Password', 'secret'
    SELECT @exportEncrypted = 1
    EXEC sp_OAMethod @key, 'ToPuttyPrivateKey', @exportedKey OUT, @exportEncrypted
    EXEC sp_OAMethod @key, 'SaveText', @success OUT, @exportedKey, 'privkey_putty_encrypted.ppk'

    --  Export private key to XML:
    EXEC sp_OAMethod @key, 'ToXml', @exportedKey OUT
    EXEC sp_OAMethod @key, 'SaveText', @success OUT, @exportedKey, 'privkey.xml'

    --  ----------------------------------------------------
    --  Now for the public key....
    --  ----------------------------------------------------

    --  The Secure Shell (SSH) Public Key File Format
    --  is documented in RFC 4716.
    EXEC sp_OAMethod @key, 'ToRfc4716PublicKey', @exportedKey OUT
    EXEC sp_OAMethod @key, 'SaveText', @success OUT, @exportedKey, 'pubkey_rfc4716.pub'

    --  OpenSSH has a separate public-key file format, which
    --  is also supported by Chilkat SshKey:
    EXEC sp_OAMethod @key, 'ToOpenSshPublicKey', @exportedKey OUT
    EXEC sp_OAMethod @key, 'SaveText', @success OUT, @exportedKey, 'pubkey_openSsh.pub'
END
GO