日期：2011-05-02 15:21:00 来源：本站整理
MD5算法的T-SQL实现(FORSQL2000)（二）[MSSQL防范]
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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(SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[MD5_WordToHex]') AND xtype IN(N'FN', N'IF', N'TF'))
DROP FUNCTION [dbo].[MD5_WordToHex]
GO
/*****************************************************************************
* Name: MD5_WordToHex
* Description: MD5_WordToHex
*****************************************************************************/
CREATE FUNCTION dbo.MD5_WordToHex(
@iValue INT
)
RETURNS CHAR(8)
WITH ENCRYPTION
AS
BEGIN
DECLARE @sRes VARCHAR(8)
DECLARE @iTmp INT
DECLARE @iCount TINYINT
SELECT @sRes = ', @iCount = 0
WHILE(@iCount<4)
BEGIN
SET @iTmp = dbo.MD5_RShift(@iValue,@iCount*8) & 0x000000FF
SET @sRes = @sRes + CASE @iTmp / 16 WHEN 0 THEN '0'
WHEN 1 THEN '1'
WHEN 2 THEN '2'
WHEN 3 THEN '3'
WHEN 4 THEN '4'
WHEN 5 THEN '5'
WHEN 6 THEN '6'
WHEN 7 THEN '7'
WHEN 8 THEN '8'
WHEN 9 THEN '9'
WHEN 10 THEN 'A'
WHEN 11 THEN 'B'
WHEN 12 THEN 'C'
WHEN 13 THEN 'D'
WHEN 14 THEN 'E'
WHEN 15 THEN 'F'
ELSE ' END
+ CASE @iTmp % 16 WHEN 0 THEN '0'
WHEN 1 THEN '1'
WHEN 2 THEN '2'
WHEN 3 THEN '3'
WHEN 4 THEN '4'
WHEN 5 THEN '5'
WHEN 6 THEN '6'
WHEN 7 THEN '7'
WHEN 8 THEN '8'
WHEN 9 THEN '9'
WHEN 10 THEN 'A'
WHEN 11 THEN 'B'
WHEN 12 THEN 'C'
WHEN 13 THEN 'D'
WHEN 14 THEN 'E'
WHEN 15 THEN 'F'
ELSE ' END
SET @iCount = @iCount + 1
END
RETURN(@sRes)
END
GO
IF EXISTS(SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[MD5]') AND xtype IN(N'FN', N'IF', N'TF'))
DROP FUNCTION [dbo].[MD5]
GO
/*****************************************************************************
* Name: MD5
* Description: MD5
*****************************************************************************/
CREATE FUNCTION dbo.MD5(
@sOrigMess NVARCHAR(4000)
)
RETURNS CHAR(32)
WITH ENCRYPTION
AS
BEGIN
--====================================
DECLARE @S11 TINYINT
DECLARE @S12 TINYINT
DECLARE @S13 TINYINT
DECLARE @S14 TINYINT
DECLARE @S21 TINYINT
DECLARE @S22 TINYINT
DECLARE @S23 TINYINT
DECLARE @S24 TINYINT
DECLARE @S31 TINYINT
DECLARE @S32 TINYINT
DECLARE @S33 TINYINT
DECLARE @S34 TINYINT
DECLARE @S41 TINYINT
DECLARE @S42 TINYINT
DECLARE @S43 TINYINT
DECLARE @S44 TINYINT
SELECT @S11 = 7, @S12 = 12, @S13 = 17, @S14 = 22
SELECT @S21 = 5, @S22 = 9, @S23 = 14, @S24 = 20
SELECT @S31 = 4, @S32 = 11, @S33 = 16, @S34 = 23
SELECT @S41 = 6, @S42 = 10, @S43 = 15, @S44 = 21
--====================================
DECLARE @a INT
DECLARE @b INT
DECLARE @c INT
DECLARE @d INT
DECLARE @AA INT
DECLARE @BB INT
DECLARE @CC INT
DECLARE @DD INT
SELECT @a = 0x67452301
,@b = 0xEFCDAB89
,@c = 0x98BADCFE
,@d = 0x10325476
--====================================
DECLARE @sRes VARCHAR(32)
SET @sRes = '
DECLARE @iWordArrayLen INT
DECLARE @iWordArrayCount INT
DECLARE @tTmp TABLE([ID] INT, [Word] INT)
INSERT INTO @tTmp SELECT * FROM dbo.MD5_ConvertToWordArray(@sOrigMess)
SELECT @iWordArrayCount=0, @iWordArrayLen = COUNT(*) FROM @tTmp
WHILE(@iWordArrayCount < @iWordArrayLen)
BEGIN
SELECT @AA = @a, @BB = @b, @CC = @c, @DD = @d
SELECT @a = dbo.MD5_FF(@a, @b, @c, @d, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 0), @S11, 0xD76AA478)
SELECT @d = dbo.MD5_FF(@d, @a, @b, @c, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 1), @S12, 0xE8C7B756)
SELECT @c = dbo.MD5_FF(@c, @d, @a, @b, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 2), @S13, 0x242070DB)
SELECT @b = dbo.MD5_FF(@b, @c, @d, @a, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 3), @S14, 0xC1BDCEEE)
SELECT @a = dbo.MD5_FF(@a, @b, @c, @d, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 4), @S11, 0xF57C0FAF)
SELECT @d = dbo.MD5_FF(@d, @a, @b, @c, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 5), @S12, 0x4787C62A)
SELECT @c = dbo.MD5_FF(@c, @d, @a, @b, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 6), @S13, 0xA8304613)
SELECT @b = dbo.MD5_FF(@b, @c, @d, @a, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 7), @S14, 0xFD469501)
SELECT @a = dbo.MD5_FF(@a, @b, @c, @d, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 8), @S11, 0x698098D8)
SELECT @d = dbo.MD5_FF(@d, @a, @b, @c, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 9), @S12, 0x8B44F7AF)
SELECT @c = dbo.MD5_FF(@c, @d, @a, @b, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 10), @S13, 0xFFFF5BB1)
SELECT @b = dbo.MD5_FF(@b, @c, @d, @a, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 11), @S14, 0x895CD7BE)
SELECT @a = dbo.MD5_FF(@a, @b, @c, @d, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 12), @S11, 0x6B901122)
SELECT @d = dbo.MD5_FF(@d, @a, @b, @c, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 13), @S12, 0xFD987193)
SELECT @c = dbo.MD5_FF(@c, @d, @a, @b, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 14), @S13, 0xA679438E)
SELECT @b = dbo.MD5_FF(@b, @c, @d, @a, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 15), @S14, 0x49B40821)
SELECT @a = dbo.MD5_GG(@a, @b, @c, @d, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 1), @S21, 0xF61E2562)
SELECT @d = dbo.MD5_GG(@d, @a, @b, @c, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 6), @S22, 0xC040B340)
SELECT @c = dbo.MD5_GG(@c, @d, @a, @b, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 11), @S23, 0x265E5A51)
SELECT @b = dbo.MD5_GG(@b, @c, @d, @a, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 0), @S24, 0xE9B6C7AA)
SELECT @a = dbo.MD5_GG(@a, @b, @c, @d, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 5), @S21, 0xD62F105D)
SELECT @d = dbo.MD5_GG(@d, @a, @b, @c, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 10), @S22, 0x2441453)
SELECT @c = dbo.MD5_GG(@c, @d, @a, @b, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 15), @S23, 0xD8A1E681)
SELECT @b = dbo.MD5_GG(@b, @c, @d, @a, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 4), @S24, 0xE7D3FBC8)
SELECT @a = dbo.MD5_GG(@a, @b, @c, @d, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 9), @S21, 0x21E1CDE6)
SELECT @d = dbo.MD5_GG(@d, @a, @b, @c, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 14), @S22, 0xC33707D6)
SELECT @c = dbo.MD5_GG(@c, @d, @a, @b, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 3), @S23, 0xF4D50D87)
SELECT @b = dbo.MD5_GG(@b, @c, @d, @a, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 8), @S24, 0x455A14ED)
SELECT @a = dbo.MD5_GG(@a, @b, @c, @d, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 13), @S21, 0xA9E3E905)
SELECT @d = dbo.MD5_GG(@d, @a, @b, @c, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 2), @S22, 0xFCEFA3F8)
SELECT @c = dbo.MD5_GG(@c, @d, @a, @b, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 7), @S23, 0x676F02D9)
SELECT @b = dbo.MD5_GG(@b, @c, @d, @a, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 12), @S24, 0x8D2A4C8A)
SELECT @a = dbo.MD5_HH(@a, @b, @c, @d, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 5), @S31, 0xFFFA3942)
SELECT @d = dbo.MD5_HH(@d, @a, @b, @c, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 8), @S32, 0x8771F681)
SELECT @c = dbo.MD5_HH(@c, @d, @a, @b, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 11), @S33, 0x6D9D6122)
SELECT @b = dbo.MD5_HH(@b, @c, @d, @a, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 14), @S34, 0xFDE5380C)
SELECT @a = dbo.MD5_HH(@a, @b, @c, @d, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 1), @S31, 0xA4BEEA44)
SELECT @d = dbo.MD5_HH(@d, @a, @b, @c, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 4), @S32, 0x4BDECFA9)
SELECT @c = dbo.MD5_HH(@c, @d, @a, @b, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 7), @S33, 0xF6BB4B60)
SELECT @b = dbo.MD5_HH(@b, @c, @d, @a, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 10), @S34, 0xBEBFBC70)
SELECT @a = dbo.MD5_HH(@a, @b, @c, @d, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 13), @S31, 0x289B7EC6)
SELECT @d = dbo.MD5_HH(@d, @a, @b, @c, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 0), @S32, 0xEAA127FA)
SELECT @c = dbo.MD5_HH(@c, @d, @a, @b, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 3), @S33, 0xD4EF3085)
SELECT @b = dbo.MD5_HH(@b, @c, @d, @a, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 6), @S34, 0x4881D05)
SELECT @a = dbo.MD5_HH(@a, @b, @c, @d, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 9), @S31, 0xD9D4D039)
SELECT @d = dbo.MD5_HH(@d, @a, @b, @c, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 12), @S32, 0xE6DB99E5)
SELECT @c = dbo.MD5_HH(@c, @d, @a, @b, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 15), @S33, 0x1FA27CF8)
SELECT @b = dbo.MD5_HH(@b, @c, @d, @a, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 2), @S34, 0xC4AC5665)
SELECT @a = dbo.MD5_II(@a, @b, @c, @d, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 0), @S41, 0xF4292244)
SELECT @d = dbo.MD5_II(@d, @a, @b, @c, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 7), @S42, 0x432AFF97)
SELECT @c = dbo.MD5_II(@c, @d, @a, @b, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 14), @S43, 0xAB9423A7)
SELECT @b = dbo.MD5_II(@b, @c, @d, @a, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 5), @S44, 0xFC93A039)
SELECT @a = dbo.MD5_II(@a, @b, @c, @d, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 12), @S41, 0x655B59C3)
SELECT @d = dbo.MD5_II(@d, @a, @b, @c, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 3), @S42, 0x8F0CCC92)
SELECT @c = dbo.MD5_II(@c, @d, @a, @b, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 10), @S43, 0xFFEFF47D)
SELECT @b = dbo.MD5_II(@b, @c, @d, @a, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 1), @S44, 0x85845DD1)
SELECT @a = dbo.MD5_II(@a, @b, @c, @d, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 8), @S41, 0x6FA87E4F)
SELECT @d = dbo.MD5_II(@d, @a, @b, @c, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 15), @S42, 0xFE2CE6E0)
SELECT @c = dbo.MD5_II(@c, @d, @a, @b, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 6), @S43, 0xA3014314)
SELECT @b = dbo.MD5_II(@b, @c, @d, @a, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 13), @S44, 0x4E0811A1)
SELECT @a = dbo.MD5_II(@a, @b, @c, @d, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 4), @S41, 0xF7537E82)
SELECT @d = dbo.MD5_II(@d, @a, @b, @c, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 11), @S42, 0xBD3AF235)
SELECT @c = dbo.MD5_II(@c, @d, @a, @b, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 2), @S43, 0x2AD7D2BB)
SELECT @b = dbo.MD5_II(@b, @c, @d, @a, (SELECT [Word] FROM @tTmp WHERE [ID] = @iWordArrayCount + 9), @S44, 0xEB86D391)
SET @a = dbo.MD5_AddUnsigned(@a, @AA)
SET @b = dbo.MD5_AddUnsigned(@b, @BB)
SET @c = dbo.MD5_AddUnsigned(@c, @CC)
SET @d = dbo.MD5_AddUnsigned(@d, @DD)
SET @iWordArrayCount = @iWordArrayCount + 16
END
SET @sRes = dbo.MD5_WordToHex(@a) + dbo.MD5_WordToHex(@b) + dbo.MD5_WordToHex(@c) + dbo.MD5_WordToHex(@d)
SET @sRes = LOWER(@sRes)
RETURN(@sRes)
END
GO
--Test
set nocount on
select dbo.MD5(') as 'MD5('')'
union
select 'd41d8cd98f00b204e9800998ecf8427e'
select dbo.MD5('a') as 'MD5('a')'
union
select '0cc175b9c0f1b6a831c399e269772661'
select dbo.MD5('abc') as 'MD5('abc')'
union
select '900150983cd24fb0d6963f7d28e17f72'
select dbo.MD5('message digest') as 'MD5('message digest')'
union
select 'f96b697d7cb7938d525a2f31aaf161d0'
select dbo.MD5('abcdefghijklmnopqrstuvwxyz') as 'MD5('abcdefghijklmnopqrstuvwxyz')'
union
select 'c3fcd3d76192e4007dfb496cca67e13b'
select dbo.MD5('ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789') as 'MD5('ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789')'
union
select 'd174ab98d277d9f5a5611c2c9f419d9f'
select dbo.MD5('12345678901234567890123456789012345678901234567890123456789012345678901234567890') as 'MD5('12345678901234567890123456789012345678901234567890123456789012345678901234567890')'
union
select '57edf4a22be3c955ac49da2e2107b67a'
select dbo.MD5('我') as 'MD5('我')'
union
select 'a31d0f25367ebe046897f8a939ca4a9f'
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