S/MIME Signed Message

Create an S/MIME signed (PKCS7) message.

CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @mime int
    EXEC @hr = sp_OACreate 'Chilkat.Mime', @mime OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    DECLARE @success int

    EXEC sp_OAMethod @mime, 'UnlockComponent', @success OUT, 'Anything for 30-day trial.'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @mime, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        RETURN
      END

    EXEC sp_OAMethod @mime, 'AddHeaderField', NULL, 'Subject', 'This is a test'
    EXEC sp_OAMethod @mime, 'AddHeaderField', NULL, 'Abc', '123'

    EXEC sp_OAMethod @mime, 'SetBodyFromPlainText', NULL, 'This is the body'

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

    --  Load a certificate that has already been installed (from a .pfx)
    --  on the computer:
    EXEC sp_OAMethod @cert, 'LoadByEmailAddress', @success OUT, 'thawte@chilkatsoft.com'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @cert, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        RETURN
      END

    --  Convert to a signed message.
    EXEC sp_OAMethod @mime, 'ConvertToSigned', @success OUT, @cert
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @mime, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        RETURN
      END

    --  Display the signed MIME:
    EXEC sp_OAMethod @mime, 'GetMime', @sTmp0 OUT
    PRINT @sTmp0


    PRINT '----'

    --  Unwrap to restore the original MIME.
    EXEC sp_OAMethod @mime, 'UnwrapSecurity', @success OUT
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @mime, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        RETURN
      END

    --  Display the restored (unsigned) MIME:
    EXEC sp_OAMethod @mime, 'GetMime', @sTmp0 OUT
    PRINT @sTmp0

END
GO