(SQL Server) Load PEM Public/Private Key into RSA Object

Demonstrates how to load a PEM key into the Chilkat RSA object.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

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

    DECLARE @rsa int
    -- Use "Chilkat_9_5_0.Rsa" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Rsa', @rsa OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- First demonstrate importing a PEM public key:
    DECLARE @publicKeyPem nvarchar(4000)
    SELECT @publicKeyPem = 'PEM public-key data goes here'
    DECLARE @pubkey int
    -- Use "Chilkat_9_5_0.PublicKey" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.PublicKey', @pubkey OUT

    DECLARE @success int
    EXEC sp_OAMethod @pubkey, 'LoadFromString', @success OUT, @publicKeyPem
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @pubkey, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @rsa
        EXEC @hr = sp_OADestroy @pubkey
        RETURN
      END

    DECLARE @publicKeyXml nvarchar(4000)
    EXEC sp_OAMethod @pubkey, 'GetXml', @publicKeyXml OUT

    EXEC sp_OAMethod @rsa, 'ImportPublicKey', @success OUT, @publicKeyXml
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @rsa, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @rsa
        EXEC @hr = sp_OADestroy @pubkey
        RETURN
      END

    -- Demonstrate importing a PEM private key:
    DECLARE @privateKeyPem nvarchar(4000)
    SELECT @privateKeyPem = 'PEM private-key data goes here'
    DECLARE @privkey int
    -- Use "Chilkat_9_5_0.PrivateKey" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.PrivateKey', @privkey OUT

    -- If the private key PEM is protected with a password, then 
    -- call LoadEncryptedPem.  Otherwise call LoadPem.
    EXEC sp_OAMethod @privkey, 'LoadPem', @success OUT, @privateKeyPem
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @privkey, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @rsa
        EXEC @hr = sp_OADestroy @pubkey
        EXEC @hr = sp_OADestroy @privkey
        RETURN
      END

    DECLARE @privateKeyXml nvarchar(4000)
    EXEC sp_OAMethod @privkey, 'GetXml', @privateKeyXml OUT
    EXEC sp_OAMethod @rsa, 'ImportPrivateKey', @success OUT, @privateKeyXml
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @rsa, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @rsa
        EXEC @hr = sp_OADestroy @pubkey
        EXEC @hr = sp_OADestroy @privkey
        RETURN
      END


    PRINT 'OK!'

    EXEC @hr = sp_OADestroy @rsa
    EXEC @hr = sp_OADestroy @pubkey
    EXEC @hr = sp_OADestroy @privkey


END
GO