sql server存储过程解密

解密存储过程：

USE [RYTreasureDB]
GO

/****** Object:  StoredProcedure [dbo].[sp__windbi$decrypt]    Script Date: 2019/8/8 10:26:20 ******/
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO



CREATE PROCEDURE [dbo].[sp__windbi$decrypt]
(
  @procedure SYSNAME = NULL ,
  @revfl INT = 1
)
AS /**//*
王成辉翻译整理，转贴请注明出自微软BI开拓者www.windbi.com
调用形式为：
exec dbo.sp__windbi$decrypt @procedure,0
如果第二个参数使用1的话，会给出该存储过程的一些提示。
--版本4.0  修正存储过程过长解密出来是空白的问题
*/
SET NOCOUNT ON
IF @revfl = 1 
    BEGIN
        PRINT '警告：该存储过程会删除并重建原始的存储过程。'
        PRINT ' 在运行该存储过程之前确保你的数据库有一个备份。'
        PRINT ' 该存储过程通常应该运行在产品环境的一个备份的非产品环境下。'
        PRINT ' 为了运行这个存储过程，将参数@refl的值更改为0。'
        RETURN 0
    END
DECLARE @intProcSpace BIGINT ,
    @t BIGINT ,
    @maxColID SMALLINT ,
    @procNameLength INT
SELECT  @maxColID = MAX(subobjid)
FROM    sys.sysobjvalues
WHERE   objid = OBJECT_ID(@procedure)
--select @maxColID as 'Rows in sys.sysobjvalues'
SELECT  @procNameLength = DATALENGTH(@procedure) + 29
DECLARE @real_01 NVARCHAR(MAX)
DECLARE @fake_01 NVARCHAR(MAX)
DECLARE @fake_encrypt_01 NVARCHAR(MAX)
DECLARE @real_decrypt_01 NVARCHAR(MAX) ,
    @real_decrypt_01a NVARCHAR(MAX)
DECLARE @objtype VARCHAR(2) ,
    @ParentName NVARCHAR(MAX)
SELECT  @real_decrypt_01a = ''
--提取对象的类型如是存储过程还是函数，如果是触发器，还要得到其父对象的名称
SELECT  @objtype = type, @parentname = OBJECT_NAME(parent_object_id)
FROM    sys.objects
WHERE   [object_id] = OBJECT_ID(@procedure)
-- 从sys.sysobjvalues里提出加密的imageval记录
SET @real_01 = ( SELECT TOP 1
                        imageval
                 FROM   sys.sysobjvalues
                 WHERE  objid = OBJECT_ID(@procedure) AND valclass = 1
                 ORDER BY subobjid
               )
--创建一个临时表
CREATE TABLE #output
(
  [ident] [int] IDENTITY(1, 1)
                NOT NULL ,
  [real_decrypt] NVARCHAR(MAX)
)
------------------------------------------------------------

--开始一个事务，稍后回滚
BEGIN TRAN

--更改原始的存储过程，用短横线替换
IF @objtype = 'P' 
    SET @fake_01 = 'ALTER PROCEDURE ' + @procedure + ' WITH ENCRYPTION AS select 1
  /**//*' + REPLICATE(CAST('*' AS NVARCHAR(MAX)),
                      DATALENGTH(@real_01) / 2 - @procNameLength) + '*/'
ELSE 
    IF @objtype = 'FN' 
        SET @fake_01 = 'ALTER FUNCTION ' + @procedure + '() RETURNS INT WITH ENCRYPTION AS BEGIN RETURN 1
  /**//*' + REPLICATE(CAST('*' AS NVARCHAR(MAX)),
                      DATALENGTH(@real_01) / 2 - @procNameLength) + '*/ END'
    ELSE 
        IF @objtype = 'V' 
            SET @fake_01 = 'ALTER view ' + @procedure + ' WITH ENCRYPTION AS select 1 as col
  /**//*' + REPLICATE(CAST('*' AS NVARCHAR(MAX)),
                      DATALENGTH(@real_01) / 2 - @procNameLength) + '*/'
        ELSE 
            IF @objtype = 'TR' 
                SET @fake_01 = 'ALTER trigger ' + @procedure + ' ON ' + @parentname + 'WITH ENCRYPTION AFTER INSERT AS RAISERROR (''N'',16,10)
  /**//*' + REPLICATE(CAST('*' AS NVARCHAR(MAX)),
                      DATALENGTH(@real_01) / 2 - @procNameLength) + '*/'
EXECUTE (@fake_01)
--从sys.sysobjvalues里提出加密的假的
SET @fake_encrypt_01 = ( SELECT TOP 1
                                imageval
                         FROM   sys.sysobjvalues
                         WHERE  objid = OBJECT_ID(@procedure) AND valclass = 1
                         ORDER BY subobjid
                       )
IF @objtype = 'P' 
    SET @fake_01 = 'Create PROCEDURE ' + @procedure + ' WITH ENCRYPTION AS select 1
  /**//*' + REPLICATE(CAST('*' AS NVARCHAR(MAX)),
                      DATALENGTH(@real_01) / 2 - @procNameLength) + '*/'
ELSE 
    IF @objtype = 'FN' 
        SET @fake_01 = 'CREATE FUNCTION ' + @procedure + '() RETURNS INT WITH ENCRYPTION AS BEGIN RETURN 1
  /**//*' + REPLICATE(CAST('*' AS NVARCHAR(MAX)),
                      DATALENGTH(@real_01) / 2 - @procNameLength) + '*/ END'
    ELSE 
        IF @objtype = 'V' 
            SET @fake_01 = 'Create view ' + @procedure + ' WITH ENCRYPTION AS select 1 as col
  /**//*' + REPLICATE(CAST('*' AS NVARCHAR(MAX)),
                      DATALENGTH(@real_01) / 2 - @procNameLength) + '*/'
        ELSE 
            IF @objtype = 'TR' 
                SET @fake_01 = 'Create trigger ' + @procedure + ' ON ' + @parentname + 'WITH ENCRYPTION AFTER INSERT AS RAISERROR (''N'',16,10)
  /**//*' + REPLICATE(CAST('*' AS NVARCHAR(MAX)),
                      DATALENGTH(@real_01) / 2 - @procNameLength) + '*/'
--开始计数
SET @intProcSpace = 1
--使用字符填充临时变量
SET @real_decrypt_01 = REPLICATE(CAST('A' AS NVARCHAR(MAX)),
                                 ( DATALENGTH(@real_01) / 2 ))
--循环设置每一个变量，创建真正的变量
--每次一个字节
SET @intProcSpace = 1
--如有必要，遍历每个@real_xx变量并解密
WHILE @intProcSpace <= ( DATALENGTH(@real_01) / 2 ) 
    BEGIN
--真的和假的和加密的假的进行异或处理
        SET @real_decrypt_01 = STUFF(@real_decrypt_01, @intProcSpace, 1,
                                     NCHAR(UNICODE(SUBSTRING(@real_01,
                                                             @intProcSpace, 1)) ^ ( UNICODE(SUBSTRING(@fake_01,
                                                              @intProcSpace, 1)) ^ UNICODE(SUBSTRING(@fake_encrypt_01,
                                                              @intProcSpace, 1)) )))
        SET @intProcSpace = @intProcSpace + 1
    END
--通过sp_helptext逻辑向表#output里插入变量
INSERT  #output ( real_decrypt )
        SELECT  @real_decrypt_01
--select real_decrypt AS '#output chek' from #output --测试
-- -------------------------------------
--开始从sp_helptext提取
-- -------------------------------------
DECLARE @dbname SYSNAME ,
    @BlankSpaceAdded INT ,
    @BasePos INT ,
    @CurrentPos INT ,
    @TextLength INT ,
    @LineId INT ,
    @AddOnLen INT ,
    @LFCR INT --回车换行的长度
    ,
    @DefinedLength INT ,
    @SyscomText NVARCHAR(MAX) ,
    @Line NVARCHAR(255)
SELECT  @DefinedLength = 255
SELECT  @BlankSpaceAdded = 0 --跟踪行结束的空格。注意Len函数忽略了多余的空格
CREATE TABLE #CommentText
(
  LineId INT ,
  Text NVARCHAR(255) COLLATE database_default
)
--使用#output代替sys.sysobjvalues
DECLARE ms_crs_syscom CURSOR LOCAL
FOR
SELECT  real_decrypt
FROM    #output
ORDER BY ident FOR READ ONLY
--获取文本
SELECT  @LFCR = 2
SELECT  @LineId = 1
OPEN ms_crs_syscom
FETCH NEXT FROM ms_crs_syscom INTO @SyscomText

WHILE @@fetch_status >= 0 
    BEGIN
        SELECT  @BasePos = 1
        SELECT  @CurrentPos = 1
        SELECT  @TextLength = LEN(@SyscomText)
        WHILE @CurrentPos != 0 
            BEGIN
        --通过回车查找行的结束
                SELECT  @CurrentPos = CHARINDEX(CHAR(13) + CHAR(10),
                                                @SyscomText, @BasePos)
        --如果找到回车
                IF @CurrentPos != 0 
                    BEGIN
                --如果@Lines的长度的新值比设置的大就插入@Lines目前的内容并继续
                        WHILE ( ISNULL(LEN(@Line), 0) + @BlankSpaceAdded + @CurrentPos - @BasePos + @LFCR ) > @DefinedLength 
                            BEGIN
                                SELECT  @AddOnLen = @DefinedLength - ( ISNULL(LEN(@Line),
                                                              0) + @BlankSpaceAdded )
                                INSERT  #CommentText
                                VALUES  ( @LineId,
                                          ISNULL(@Line, N'') + ISNULL(SUBSTRING(@SyscomText,
                                                              @BasePos,
                                                              @AddOnLen), N'') )
                                SELECT  @Line = NULL, @LineId = @LineId + 1,
                                        @BasePos = @BasePos + @AddOnLen,
                                        @BlankSpaceAdded = 0
                            END
                        SELECT  @Line = ISNULL(@Line, N'') + ISNULL(SUBSTRING(@SyscomText,
                                                              @BasePos,
                                                              @CurrentPos - @BasePos + @LFCR),
                                                              N'')
                        SELECT  @BasePos = @CurrentPos + 2
                        INSERT  #CommentText
                        VALUES  ( @LineId, @Line )
                        SELECT  @LineId = @LineId + 1
                        SELECT  @Line = NULL
                    END
                ELSE
--如果回车没找到
                    BEGIN
                        IF @BasePos <= @TextLength 
                            BEGIN
                        --如果@Lines长度的新值大于定义的长度
                                WHILE ( ISNULL(LEN(@Line), 0) + @BlankSpaceAdded + @TextLength - @BasePos + 1 ) > @DefinedLength 
                                    BEGIN
                                        SELECT  @AddOnLen = @DefinedLength - ( ISNULL(LEN(@Line),
                                                              0) + @BlankSpaceAdded )
                                        INSERT  #CommentText
                                        VALUES  ( @LineId,
                                                  ISNULL(@Line, N'') + ISNULL(SUBSTRING(@SyscomText,
                                                              @BasePos,
                                                              @AddOnLen), N'') )
                                        SELECT  @Line = NULL,
                                                @LineId = @LineId + 1,
                                                @BasePos = @BasePos + @AddOnLen,
                                                @BlankSpaceAdded = 0
                                    END
                                SELECT  @Line = ISNULL(@Line, N'') + ISNULL(SUBSTRING(@SyscomText,
                                                              @BasePos,
                                                              @TextLength - @BasePos + 1),
                                                              N'')
                                IF LEN(@Line) < @DefinedLength AND CHARINDEX(' ',
                                                              @SyscomText,
                                                              @TextLength + 1) > 0 
                                    BEGIN
                                        SELECT  @Line = @Line + ' ',
                                                @BlankSpaceAdded = 1
                                    END
                            END
                    END
            END
        FETCH NEXT FROM ms_crs_syscom INTO @SyscomText
    END
    
    
IF @Line IS NOT NULL 
    INSERT  #CommentText
    VALUES  ( @LineId, @Line )
SELECT  Text
FROM    #CommentText
ORDER BY LineId
CLOSE ms_crs_syscom
DEALLOCATE ms_crs_syscom
DROP TABLE #CommentText

-- -------------------------------------
--结束从sp_helptext提取
-- -------------------------------------
--删除用短横线创建的存储过程并重建原始的存储过程
ROLLBACK TRAN
DROP TABLE #output


GO

使用方法：exec dbo.sp__windbi$decrypt '存储过程名称',0

执行之后会报错：

解密过程，必须在DAC连接SQL Server，操作如下：

服务器名称格式：admin:+服务器名（可能会遇到各种问题，网上有解答）

登录成功之后就没错误了。直接执行解密的存储过程即可。