SQL Server

Find a Certificate by it's SHA-1 Thumbprint

See more Cert Store Examples

Finds a certificate by it's SHA-1 hex thumbprint.

Note: This example requires Chilkat v10.1.2 or later.

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 @certStore int
    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 opens the Current User certificate store on Windows,
    -- On MacOS and iOS it opens the default Keychain.
    DECLARE @bReadOnly int
    SELECT @bReadOnly = 1
    EXEC sp_OAMethod @certStore, 'OpenCurrentUserStore', @success OUT, @bReadOnly
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @certStore, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @certStore
        RETURN
      END

    -- Find the certificate having a specific SHA1 thumbprint.
    DECLARE @json int
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @json OUT

    EXEC sp_OAMethod @json, 'UpdateString', @success OUT, 'thumbprint', @thumbprint

    DECLARE @cert int
    EXEC @hr = sp_OACreate 'Chilkat.Cert', @cert OUT

    EXEC sp_OAMethod @certStore, 'FindCert', @success OUT, @json, @cert
    IF @success = 0
      BEGIN

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


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

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

    EXEC sp_OAMethod @certStorePem, 'LoadPemFile', @success OUT, 'pemFiles/certificates.pem'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @certStorePem, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @certStore
        EXEC @hr = sp_OADestroy @json
        EXEC @hr = sp_OADestroy @cert
        EXEC @hr = sp_OADestroy @certStorePem
        RETURN
      END

    EXEC sp_OAMethod @certStore, 'FindCert', @success OUT, @json, @cert
    IF @success = 0
      BEGIN

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


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

    EXEC @hr = sp_OADestroy @certStore
    EXEC @hr = sp_OADestroy @json
    EXEC @hr = sp_OADestroy @cert
    EXEC @hr = sp_OADestroy @certStorePem


END
GO