数据库中怎样创建加密的存储过程

可以例用Oracle 自带的Wrap工具实现，此工具在$ORACLE_HOME/BIN目录下，具体如下

1、设置字符集环境变量

set NLS_LANG=CHINESE_CHINA.ZHS16GBK

2、创建一个存储过程文件

在E:\下创建test.sql文件，内容如下：

create or replace procedure test1(i in number) as

begin

dbms_output.put_line(' 输入参数是'||to_char(i))

end

3、加密

c:\>cd %ORACLE_HOME%\BIN

c:\>wrap iname=e:\test1.sql

PL/SQL Wrapper: Release 8.1.7.0.0 - Production on Tue Nov 27 22:26:48 2001

Copyright (c) Oracle Corporation 1993, 2000.All Rights Reserved.

Processing test1.sql to test1.plb

4、运行test1.plb

sqlplus /nolog

SQL>conn TEST/TEST@db01

SQL>@e:\a.plb

过程已创建。

5、运行存储过程

SQL>set serveroutput on

SQL>execute test1(1)

输入参数是1

PL/SQL 过程已成功完成。

6、查看存储过程的代码

SQL>select name,text from all_source where type='PROCEDURE' and name='TEST1'

结果：看不到其原码

分类: 电脑/网络 >>互联网

问题描述:

我以前用的时候好好的,可以添加存储过程,也可以查看,修改等等.

可是最近突然不能查看了,一查看就报

错误20585 ****** Encrypted object is not transferable, and script can not be generated. ******

网上说是加密了,我用了他们的解密函数也能解密和查看了,可是我想知道是为什么突然发生这种现象呢?

解析:

存储过程解密(破解函数,过程,触发器,视图.仅限于SQLSERVER2000)

--*/

/*--调用示例:

--解密指定存储过程

exec sp_decrypt '存储过程名'

--*/

create PROCEDURE sp_decrypt(@objectName varchar(50))

AS

begin

begin tran

declare @objectname1 varchar(100),@varbin varbinary(8000)

declare @sql1 nvarchar(4000),@sql2 nvarchar(4000),@sql3 nvarchar(4000),@sql4 nvarchar(4000),@sql5 nvarchar(4000),@sql6 nvarchar(4000),@sql7 nvarchar(4000),@sql8 nvarchar(4000),@sql9 nvarchar(4000),@sql10 nvarchar(4000)

DECLARE @OrigSpText1 nvarchar(4000), @OrigSpText2 nvarchar(4000) , @OrigSpText3 nvarchar(4000), @resultsp nvarchar(4000)

declare @i int,@status int,@type varchar(10),@parentid int

declare @colid int,@n int,@q int,@j int,@k int,@encrypted int,@number int

select @type=xtype,@parentid=parent_obj from sysobjects where id=object_id(@ObjectName)

create table #temp(number int,colid int,ctext varbinary(8000),encrypted int,status int)

insert #temp SELECT number,colid,ctext,encrypted,status FROM sy *** ents WHERE id = object_id(@objectName)

select @number=max(number) from #temp

set @k=0

while @k<=@number

begin

if exists(select 1 from sy *** ents where id=object_id(@objectname) and number=@k)

begin

if @type='P'

set @sql1=(case when @number>1 then 'ALTER PROCEDURE '+ @objectName +''+rtrim(@k)+' WITH ENCRYPTION AS '

else 'ALTER PROCEDURE '+ @objectName+' WITH ENCRYPTION AS '

end)

if @type='TR'

set @sql1='ALTER TRIGGER '+@objectname+' ON '+OBJECT_NAME(@parentid)+' WITH ENCRYPTION FOR INSERT AS PRINT 1 '

if @type='FN' or @type='TF' or @type='IF'

set @sql1=(case @type when 'TF' then

'ALTER FUNCTION '+ @objectName+'(@a char(1)) returns @b table(a varchar(10)) with encryption as begin insert @b select @a return end '

when 'FN' then

'ALTER FUNCTION '+ @objectName+'(@a char(1)) returns char(1) with encryption as begin return @a end'

when 'IF' then

'ALTER FUNCTION '+ @objectName+'(@a char(1)) returns table with encryption as return select @a as a'

end)

if @type='V'

set @sql1='ALTER VIEW '+@objectname+' WITH ENCRYPTION AS SELECT 1 '

set @q=len(@sql1)

set @sql1=@sql1+REPLICATE('-',4000-@q)

select @sql2=REPLICATE('-',4000),@sql3=REPLICATE('-',4000),@sql4=REPLICATE('-',4000),@sql5=REPLICATE('-',4000),@sql6=REPLICATE('-',4000),@sql7=REPLICATE('-',4000),@sql8=REPLICATE('-',4000),@sql9=REPLICATE('-',4000),@sql10=REPLICATE('-',4000)

exec(@sql1+@sql2+@sql3+@sql4+@sql5+@sql6+@sql7+@sql8+@sql9+@sql10)

end

set @k=@k+1

end

set @k=0

while @k<=@number

begin

if exists(select 1 from sy *** ents where id=object_id(@objectname) and number=@k)

begin

select @colid=max(colid) from #temp where number=@k

set @n=1

while @n<=@colid

begin

select @OrigSpText1=ctext,@encrypted=encrypted,@status=status FROM #temp WHERE colid=@n and number=@k

SET @OrigSpText3=(SELECT ctext FROM sy *** ents WHERE id=object_id(@objectName) and colid=@n and number=@k)

if @n=1

begin

if @type='P'

SET @OrigSpText2=(case when @number>1 then 'CREATE PROCEDURE '+ @objectName +''+rtrim(@k)+' WITH ENCRYPTION AS '

else 'CREATE PROCEDURE '+ @objectName +' WITH ENCRYPTION AS '

end)

if @type='FN' or @type='TF' or @type='IF'--刚才有错改一下

SET @OrigSpText2=(case @type when 'TF' then

'CREATE FUNCTION '+ @objectName+'(@a char(1)) returns @b table(a varchar(10)) with encryption as begin insert @b select @a return end '

when 'FN' then

'CREATE FUNCTION '+ @objectName+'(@a char(1)) returns char(1) with encryption as begin return @a end'

when 'IF' then

'CREATE FUNCTION '+ @objectName+'(@a char(1)) returns table with encryption as return select @a as a'

end)

if @type='TR'

set @OrigSpText2='CREATE TRIGGER '+@objectname+' ON '+OBJECT_NAME(@parentid)+' WITH ENCRYPTION FOR INSERT AS PRINT 1 '

if @type='V'

set @OrigSpText2='CREATE VIEW '+@objectname+' WITH ENCRYPTION AS SELECT 1 '

set @q=4000-len(@OrigSpText2)

set @OrigSpText2=@OrigSpText2+REPLICATE('-',@q)

end

else

begin

SET @OrigSpText2=REPLICATE('-', 4000)

end

--start counter

SET @i=1

--fill temporary variable

SET @resultsp = replicate(N'A', (datalength(@OrigSpText1) / 2))

--loop

WHILE @i<=datalength(@OrigSpText1)/2

BEGIN

SET @resultsp = stuff(@resultsp, @i, 1, NCHAR(UNICODE(substring(@OrigSpText1, @i, 1)) ^

(UNICODE(substring(@OrigSpText2, @i, 1)) ^

UNICODE(substring(@OrigSpText3, @i, 1)))))

SET @i=@i+1

END

set @varbin=cast(@OrigSpText1 as varbinary(8000))

set @resultsp=(case when @encrypted=1

then @resultsp

else convert(nvarchar(4000),case when @status&2=2 then unpress(@varbin) else @varbin end)

end)

print @resultsp

--execute( @resultsp)

set @n=@n+1

end

end

set @k=@k+1

end

drop table #temp

rollback tran

end

GO

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