(SQL Server) Find a Certificate by it's SHA-1 Thumbprint

Finds a certificate by it's SHA-1 hex thumbprint. Parts of this example are specific to Windows because it searches the Windows Current User certificate store.

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
    DECLARE @iTmp0 int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @certStore int
    -- Use "Chilkat_9_5_0.CertStore" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.CertStore', @certStore OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    DECLARE @thumbprint nvarchar(4000)
    SELECT @thumbprint = '12c1dd8015f3f03f7b1fa619dc24e2493ca8b4b2'

    -- This part of the example is specific to Windows because it is opening the Windows Current-User certificate store.
    DECLARE @bReadOnly int
    SELECT @bReadOnly = 1
    DECLARE @success int
    EXEC sp_OAMethod @certStore, 'OpenCurrentUserStore', @success OUT, @bReadOnly
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @certStore, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @certStore
        RETURN
      END

    -- Find the certificate with the desired thumbprint
    DECLARE @cert int
    EXEC sp_OAMethod @certStore, 'FindCertBySha1Thumbprint', @cert OUT, @thumbprint
    EXEC sp_OAGetProperty @certStore, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 <> 1
      BEGIN

        PRINT 'Failed to find the certificate.'
        EXEC @hr = sp_OADestroy @certStore
        RETURN
      END


    EXEC sp_OAGetProperty @cert, 'SubjectCN', @sTmp0 OUT
    PRINT 'Found: ' + @sTmp0
    EXEC @hr = sp_OADestroy @cert

    -- -------------------------------------------------------------------------------------
    -- Alternatively, one could load a certificate store object with certs from a PEM file,
    -- and do the same thing..
    DECLARE @certStorePem int
    -- Use "Chilkat_9_5_0.CertStore" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.CertStore', @certStorePem OUT

    EXEC sp_OAMethod @certStorePem, 'LoadPemFile', @success OUT, 'pemFiles/certificates.pem'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @certStorePem, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @certStore
        EXEC @hr = sp_OADestroy @certStorePem
        RETURN
      END

    EXEC sp_OAMethod @certStorePem, 'FindCertBySha1Thumbprint', @cert OUT, @thumbprint
    EXEC sp_OAGetProperty @certStorePem, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 <> 1
      BEGIN

        PRINT 'Failed to find the certificate.'
        EXEC @hr = sp_OADestroy @certStore
        EXEC @hr = sp_OADestroy @certStorePem
        RETURN
      END


    EXEC sp_OAGetProperty @cert, 'SubjectCN', @sTmp0 OUT
    PRINT 'Found: ' + @sTmp0
    EXEC @hr = sp_OADestroy @cert


    EXEC @hr = sp_OADestroy @certStore
    EXEC @hr = sp_OADestroy @certStorePem


END
GO