SQL Server Requires Chilkat v11.7.0+

Remove the Password and Encryption from a PDF

See more PDF Protection Examples

Demonstrates the removeEncryption operation, which saves the PDF with no encryption at all: no password, no restrictions. It needs owner rights, so the PDF is loaded with its owner password. As with every Protection operation, the change is applied when the file is written. SQL Server

--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @iTmp0 int
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 0

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

    --  The PDF used in this example is available at encrypted_user_password.pdf

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

    --  Removing the encryption needs owner rights: load with the owner password.
    EXEC sp_OASetProperty @pdf, 'OwnerPassword', 'owner-secret'
    EXEC sp_OAMethod @pdf, 'LoadFile', @success OUT, 'qa_data/pdf/encrypted_user_password.pdf'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @pdf, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @pdf
        RETURN
      END

    DECLARE @json int
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @json OUT

    DECLARE @jsonOut int
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @jsonOut OUT

    EXEC sp_OAMethod @pdf, 'Protection', @success OUT, 'getInfo', @json, @jsonOut
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @pdf, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @pdf
        EXEC @hr = sp_OADestroy @json
        EXEC @hr = sp_OADestroy @jsonOut
        RETURN
      END

    EXEC sp_OAMethod @jsonOut, 'BoolOf', @iTmp0 OUT, 'loaded.encrypted'
    PRINT 'encrypted, as loaded: ' + @iTmp0

    EXEC sp_OAMethod @jsonOut, 'StringOf', @sTmp0 OUT, 'loaded.algorithm'
    PRINT 'algorithm: ' + @sTmp0

    EXEC sp_OAMethod @pdf, 'Protection', @success OUT, 'removeEncryption', @json, @jsonOut
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @pdf, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @pdf
        EXEC @hr = sp_OADestroy @json
        EXEC @hr = sp_OADestroy @jsonOut
        RETURN
      END

    EXEC sp_OAMethod @jsonOut, 'BoolOf', @iTmp0 OUT, 'pending.encrypted'
    PRINT 'will be saved encrypted: ' + @iTmp0

    EXEC sp_OAMethod @pdf, 'WriteFile', @success OUT, 'qa_output/minutes_unprotected.pdf'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @pdf, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @pdf
        EXEC @hr = sp_OADestroy @json
        EXEC @hr = sp_OADestroy @jsonOut
        RETURN
      END

    --  The result is an ordinary PDF that opens without a password.
    DECLARE @reader int
    EXEC @hr = sp_OACreate 'Chilkat.Pdf', @reader OUT

    DECLARE @info int
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @info OUT

    EXEC sp_OAMethod @reader, 'PreLoadCheck', @success OUT, 'qa_output/minutes_unprotected.pdf', @info
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @reader, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @pdf
        EXEC @hr = sp_OADestroy @json
        EXEC @hr = sp_OADestroy @jsonOut
        EXEC @hr = sp_OADestroy @reader
        EXEC @hr = sp_OADestroy @info
        RETURN
      END

    EXEC sp_OAMethod @info, 'BoolOf', @iTmp0 OUT, 'encrypted'
    PRINT 'encrypted: ' + @iTmp0
    EXEC sp_OAMethod @reader, 'LoadFile', @success OUT, 'qa_output/minutes_unprotected.pdf'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @reader, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @pdf
        EXEC @hr = sp_OADestroy @json
        EXEC @hr = sp_OADestroy @jsonOut
        EXEC @hr = sp_OADestroy @reader
        EXEC @hr = sp_OADestroy @info
        RETURN
      END

    EXEC sp_OAGetProperty @reader, 'NumPages', @iTmp0 OUT
    PRINT 'pages: ' + @iTmp0

    --  Sample output:

    --  encrypted, as loaded: True
    --  algorithm: rc4-128
    --  will be saved encrypted: False
    --  encrypted: False
    --  pages: 1

    EXEC @hr = sp_OADestroy @pdf
    EXEC @hr = sp_OADestroy @json
    EXEC @hr = sp_OADestroy @jsonOut
    EXEC @hr = sp_OADestroy @reader
    EXEC @hr = sp_OADestroy @info


END
GO