Generate new DSA Key from OpenSSL Parameters File

Generates a new DSA key from an OpenSSL-created parameters file (DER and PEM formats supported). Examples of using OpenSSL to create parameter files are shown here:

openssl dsaparam -outform DER 1024 <  seedData.txt >dsaparam.der

openssl dsaparam 1024 < seedData.txt >dsaparam.pem

Download Chilkat DSA ActiveX

CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int

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

    EXEC sp_OAMethod @dsa, 'UnlockComponent', @success OUT, 'Anything for 30-day trial'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @dsa, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        RETURN
      END

    EXEC sp_OAMethod @dsa, 'GenKeyFromParamsDerFile', @success OUT, 'dsaparam.der'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @dsa, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        RETURN
      END

    --  To generate a key from PEM, call GenKeyFromParamsPem
    --  (for an in-memory PEM string) or GenKeyFromParamsFilePem
    --  for a PEM file.

    --  The public and private keys may now be exported to PEM, DER,
    --  and XML formatted files.

    DECLARE @pemStr nvarchar(4000)

    DECLARE @xmlStr nvarchar(4000)

    --  First for the public key...
    --  The public key never needs to be encrypted.

    --  Save the public key in PEM format:
    EXEC sp_OAMethod @dsa, 'ToPublicPem', @pemStr OUT
    --  This example will not check the return value of SaveText...
    EXEC sp_OAMethod @dsa, 'SaveText', @success OUT, @pemStr, 'dsa_pub.pem'

    --  Save the public key in DER format:
    EXEC sp_OAMethod @dsa, 'ToPublicDerFile', @success OUT, 'dsa_pub.der'

    DECLARE @bPublicOnly int

    SELECT @bPublicOnly = 1
    --  Save to XML
    EXEC sp_OAMethod @dsa, 'ToXml', @xmlStr OUT, @bPublicOnly
    EXEC sp_OAMethod @dsa, 'SaveText', @success OUT, @pemStr, 'dsa_pub.xml'

    --  ------------------------------------
    --  Now for the private key....
    --  ------------------------------------

    --  Unencrypted PEM:
    EXEC sp_OAMethod @dsa, 'ToPem', @pemStr OUT
    EXEC sp_OAMethod @dsa, 'SaveText', @success OUT, @pemStr, 'dsa_priv.pem'

    --  Encrypted PEM:
    EXEC sp_OAMethod @dsa, 'ToEncryptedPem', @pemStr OUT, 'myPassword'
    EXEC sp_OAMethod @dsa, 'SaveText', @success OUT, @pemStr, 'dsa_privEncrypted.pem'

    --  DER:
    EXEC sp_OAMethod @dsa, 'ToDerFile', @success OUT, 'dsa_priv.der'

    --  XML:
    SELECT @bPublicOnly = 0
    EXEC sp_OAMethod @dsa, 'ToXml', @xmlStr OUT, @bPublicOnly
    EXEC sp_OAMethod @dsa, 'SaveText', @success OUT, @pemStr, 'dsa_priv.xml'

    PRINT 'Finished!'
END
GO