Technical Article

Encrypt All Stored procedures at once

,

This code is designed particulary to encrypt all or most stored procs in your database

please remember to backup your procs first before encrypting them. this is intended to be used before you release your code to your client.

 

Should you have syntax error, in my experience this is caused by the browsers markup in the sql script code box. try copying and pasting this code into sql query, for some reason if you copy the code from directly below things are ok.

 

IIF OBJECT_ID('tempdb..#backup', 'U') IS NOT NULL
BEGIN

DROP TABLE #backup

END

CREATE TABLE #backup
(
id BIGINT IDENTITY(1, 1),
sptext NVARCHAR(MAX) NOT NULL,
spname NVARCHAR(100) NOT NULL,
encrypttext NVARCHAR(MAX) NULL,
encryptstatus BIT NOT NULL
DEFAULT ( 0 )
)

DECLARE @sptexttable TABLE
(
id BIGINT IDENTITY(1, 1),
sptext NVARCHAR(MAX),
spname NVARCHAR(100)
)

INSERT INTO @sptexttable ( sptext, spname )
SELECT [text],
[name]
FROM syscomments
JOIN sysobjects ON syscomments.id = sysobjects.id
AND sysobjects.xtype = 'p'

DECLARE @sptext NVARCHAR(MAX)

DECLARE @spname NVARCHAR(100)

DECLARE @counter INT

SET @counter = 1

WHILE @counter <= ( SELECT MAX(id)
FROM @sptexttable
)

BEGIN

BEGIN TRY

 

INSERT INTO #backup ( sptext, spname )
SELECT sptext,
spname
FROM @sptexttable
WHERE id = @counter

END TRY

BEGIN CATCH

END CATCH

IF NOT EXISTS ( SELECT [name]
FROM sysobjects
WHERE [name] = 'ce_LastIndexOf'
AND xtype = 'FN' )
BEGIN

 

 

EXEC
( 'CREATE FUNCTION ce_LastIndexOf
(
@strValue VARCHAR(4000),
@strChar VARCHAR(50)
)
RETURNS INT
AS BEGIN

DECLARE @index INT

 

 

SET @index = 0

 

 

WHILE CHARINDEX(@strChar, @strValue) > 0

BEGIN

SET @index = @index
+ CASE WHEN CHARINDEX(@strChar, @strValue) > 1
THEN ( LEN(@strValue) - LEN(SUBSTRING(@strValue,
CHARINDEX(@strChar, @strValue)
+ LEN(@strChar),
LEN(@strValue))) )
ELSE 1
END

SET @strValue = SUBSTRING(@strValue,
CHARINDEX(@strChar, @strValue)
+ LEN(@strChar), LEN(@strValue))
END

RETURN @index

END'
)

 

 

END

DECLARE @tempproc NVARCHAR(MAX)

DECLARE @procindex INT

DECLARE @beginindex INT

DECLARE @header NVARCHAR(MAX)

DECLARE @asindex INT

DECLARE @replacetext NVARCHAR(MAX)

 

SET @tempproc = ( SELECT sptext
FROM @sptexttable
WHERE id = @counter
)

 

IF ( SELECT CHARINDEX('CREATE PROC', UPPER(@tempproc))
) > 0
BEGIN

BEGIN TRY

SELECT @procindex = CHARINDEX('PROC', UPPER(@tempproc))

PRINT @procindex

SELECT @beginindex = CHARINDEX('BEGIN', UPPER(@tempproc))

PRINT @beginindex

SELECT @header = SUBSTRING(@tempproc, @procindex,
@beginindex - @procindex)

SELECT @asindex = ( SELECT dbo.ce_lastindexof(@header, 'AS')
- 2
)

SELECT @replacetext = STUFF(@header, @asindex, 10,
CHAR(13) + 'WITH ENCRYPTION'
+ CHAR(13) + 'AS' + CHAR(13))

SET @tempproc = REPLACE(@tempproc, @header, @replacetext)

 

END TRY

BEGIN CATCH

END CATCH

END

 

UPDATE @sptexttable
SET sptext = @tempproc
WHERE id = @counter

 

 

--PLAY HERE TO MAKE SURE ALL PROCS ARE ALTERED

UPDATE @sptexttable
SET sptext = ( SELECT REPLACE(sptext, 'CREATE PROC',
'ALTER PROC')
FROM @sptexttable
WHERE id = @counter
)
WHERE id = @counter

SELECT @sptext = sptext,
@spname = spname
FROM @sptexttable
WHERE id = @counter

BEGIN TRY

EXEC ( @sptext
)

UPDATE #backup
SET encrypttext = @sptext,
encryptstatus = 1
WHERE id = @counter

END TRY

BEGIN CATCH

PRINT 'the stored procedure ' + @spname
+ ' cannot be encrypted automatically'

END CATCH

SET @counter = @counter + 1

END

SELECT *
FROM #backup

 

i imagine my low ratings on this code is specifically due to the syntax errors got from the markup, if not please comment.

 

chris

/*this code will encrypt most stored procedures 

contact cbmorton@gmail.com for help.

credit: Prasad Bhogadi, 2004/03/25 for the lastindex of function

please note that once a store procedure is encrypted it cannot be unencrypted. 

for that purpose this code produces a TEMP table that contains all the stored 

proc syntax BEFORE it is encrypted. this is so you at least have a backup.

*/
IF OBJECT_ID('tempdb..#backup', 'U') IS NOT NULL 

 BEGIN

 DROP TABLE #backup

 END

CREATE TABLE #backup

 (

 id BIGINT IDENTITY(1, 1),

 sptext NVARCHAR(MAX) NOT NULL,

 spname NVARCHAR(100) NOT NULL,

 encrypttext NVARCHAR(MAX) NULL,

 encryptstatus BIT NOT NULL

 DEFAULT ( 0 )

 )

DECLARE @sptexttable TABLE

 (

 id BIGINT IDENTITY(1, 1),

 sptext NVARCHAR(MAX),

 spname NVARCHAR(100)

 )

INSERT INTO @sptexttable ( sptext, spname )

 SELECT [text],

 [name]

 FROM syscomments

 JOIN sysobjects ON syscomments.id = sysobjects.id

 AND sysobjects.xtype = 'p'

DECLARE @sptext NVARCHAR(MAX)

DECLARE @spname NVARCHAR(100)

DECLARE @counter INT

SET @counter = 1

WHILE @counter <= ( SELECT MAX(id)

 FROM @sptexttable

 )

 BEGIN





 BEGIN TRY





 INSERT INTO #backup ( sptext, spname )

 SELECT sptext,

 spname

 FROM @sptexttable

 WHERE id = @counter

 END TRY

 BEGIN CATCH

 END CATCH

 

 



 IF NOT EXISTS ( SELECT [name]

 FROM sysobjects

 WHERE [name] = 'ce_LastIndexOf'

 AND xtype = 'FN' ) 

 BEGIN

    

 EXEC

 ( 'CREATE FUNCTION ce_LastIndexOf 

    (@strValue VARCHAR(4000),

    @strChar VARCHAR(50)) 

RETURNS INT

AS

BEGIN

DECLARE @index INT

    

SET @index = 0



WHILE CHARINDEX(@strChar, @strValue) > 0

    BEGIN

        SET @index = @index + CASE WHEN CHARINDEX(@strChar, @strValue) > 1 

                     THEN 

                        (LEN(@strValue) - LEN(SUBSTRING(@strValue,CHARINDEX(@strChar, @strValue) + LEN(@strChar),LEN(@strValue)))) 

                     ELSE 

                        1 

                     END

        SET @strValue = SUBSTRING(@strValue,CHARINDEX(@strChar, @strValue) + len(@strChar),LEN(@strValue))    

    END



    RETURN @index 

END'

 )



 END 

 DECLARE @tempproc NVARCHAR(MAX) 

 DECLARE @procindex INT

 DECLARE @beginindex INT

 DECLARE @header NVARCHAR(MAX)

 DECLARE @asindex INT

 DECLARE @replacetext NVARCHAR(MAX)

 

 SET @tempproc = ( SELECT sptext

 FROM @sptexttable

 WHERE id = @counter

 )

 

 IF ( SELECT CHARINDEX('CREATE PROC', UPPER(@tempproc))

 ) > 0 

 BEGIN

 BEGIN TRY

 SELECT @procindex = CHARINDEX('PROC', UPPER(@tempproc))

 PRINT @procindex

 SELECT @beginindex = CHARINDEX('BEGIN', UPPER(@tempproc))

 PRINT @beginindex

 SELECT @header = SUBSTRING(@tempproc, @procindex,

 @beginindex - @procindex)

 SELECT @asindex = ( SELECT dbo.ce_lastindexof(@header, 'AS')

 - 2

 )

 SELECT @replacetext = STUFF(@header, @asindex, 10,

 CHAR(13) + 'WITH ENCRYPTION'

 + CHAR(13) + 'AS' + CHAR(13))

 SET @tempproc = REPLACE(@tempproc, @header, @replacetext)



                    



 END TRY

 BEGIN CATCH

 END CATCH



    

 END



 UPDATE @sptexttable

 SET sptext = @tempproc

 WHERE id = @counter 



--PLAY HERE TO MAKE SURE ALL PROCS ARE ALTERED

 UPDATE @sptexttable

 SET sptext = ( SELECT REPLACE(sptext, 'CREATE PROC',

 'ALTER PROC')

 FROM @sptexttable

 WHERE id = @counter

 )

 WHERE id = @counter 



 SELECT @sptext = sptext,

 @spname = spname

 FROM @sptexttable

 WHERE id = @counter







 BEGIN TRY

 EXEC ( @sptext

 )

 UPDATE #backup

 SET encrypttext = @sptext,

 encryptstatus = 1

 WHERE id = @counter

 END TRY

 BEGIN CATCH

 PRINT 'the stored procedure ' + @spname

 + ' cannot be encrypted automatically'

 END CATCH





 SET @counter = @counter + 1

 END

SELECT *

FROM #backup

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