)（二）。 IF EXISTS(SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[MD5_ConvertToWordArray]') AND xtype IN(N'FN', N'IF', N'TF'))
DROP FUNCTION [dbo].[MD5_ConvertToWordArray]
GO
/*****************************************************************************
* Name: MD5_ConvertToWordArray
* Description: MD5_ConvertToWordArray
*****************************************************************************/
CREATE FUNCTION dbo.MD5_ConvertToWordArray(
@sOrigMess VARCHAR(8000) = ''
)
RETURNS @tWordArray TABLE([ID] INT IDENTITY(0,1),[Word] INT)
WITH ENCRYPTION
AS
BEGIN
IF @sOrigMess IS NULL
SET @sOrigMess = ''
DECLARE @iLenOfMess INT
DECLARE @iWordArrayLen INT
DECLARE @iPosOfWord INT
DECLARE @iPosOfMess INT
DECLARE @iCountOfWord INT
SET @iLenOfMess = LEN(@sOrigMess)
SET @iWordArrayLen = ((@iLenOfMess + 8)/64 + 1) * 16
SET @iCountOfWord = 0
WHILE(@iCountOfWord<@iWordArrayLen)
BEGIN
INSERT INTO @tWordArray([Word]) VALUES(0)
SET @iCountOfWord = @iCountOfWord + 1
END
SELECT @iPosOfMess = 0, @iPosOfWord = 0, @iCountOfWord = 0
WHILE(@iPosOfMess < @iLenOfMess)
BEGIN
SELECT @iCountOfWord = @iPosOfMess / 4, @iPosOfWord = @iPosOfMess % 4
UPDATE @tWordArray
SET [Word] = [Word] | dbo.MD5_LShift(UNICODE(SUBSTRING(@sOrigMess,@iPosOfMess+1,1)),@iPosOfWord*8)
WHERE [ID] = @iCountOfWord
SET @iPosOfMess = @iPosOfMess + 1
END
SELECT @iCountOfWord = @iPosOfMess / 4, @iPosOfWord = @iPosOfMess % 4
UPDATE @tWordArray
SET [Word] = [Word] | dbo.MD5_LShift(0x80,@iPosOfWord*8)
WHERE [ID] = @iCountOfWord
UPDATE @tWordArray
SET [Word] = [Word] | dbo.MD5_LShift(@iLenOfMess,3)
WHERE [ID] = @iWordArrayLen - 2
UPDATE @tWordArray
SET [Word] = [Word] | dbo.MD5_RShift(@iLenOfMess,29)
WHERE [ID] = @iWordArrayLen - 1
RETURN
END
GO
IF EXISTS(SEL
