T-SQL MD5算法实现

/*****************************************************************************
* Name: T-SQL MD5算法实现
* Author: Rambo Qian
* Create Date: 2003-04-10
* Last Modified by: Rambo Qian
* Last Update Date: 2003-04-16
* Version: V1.0.00
*****************************************************************************/
GO
 
IF EXISTS(SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[MD5_m_OnBits]') AND xtype IN(N'FN', N'IF', N'TF'))
  DROP FUNCTION [dbo].[MD5_m_OnBits]
GO
/*****************************************************************************
* Name: MD5_m_OnBits
* Description: 常数组
*****************************************************************************/
CREATE FUNCTION dbo.MD5_m_OnBits(
  @i  TINYINT
)
RETURNS INT
WITH ENCRYPTION
AS
BEGIN
  DECLARE @iRes  INT
  SELECT @iRes =
    CASE @i
      WHEN 0 THEN 1      -- 00000000000000000000000000000001
      WHEN 1 THEN 3      -- 00000000000000000000000000000011
      WHEN 2 THEN 7      -- 00000000000000000000000000000111
      WHEN 3 THEN 15      -- 00000000000000000000000000001111
      WHEN 4 THEN 31      -- 00000000000000000000000000011111
      WHEN 5 THEN 63      -- 00000000000000000000000000111111
      WHEN 6 THEN 127     -- 00000000000000000000000001111111
      WHEN 7 THEN 255     -- 00000000000000000000000011111111
      WHEN 8 THEN 511     -- 00000000000000000000000111111111
      WHEN 9 THEN 1023     -- 00000000000000000000001111111111
      WHEN 10 THEN 2047     -- 00000000000000000000011111111111
      WHEN 11 THEN 4095     -- 00000000000000000000111111111111
      WHEN 12 THEN 8191     -- 00000000000000000001111111111111
      WHEN 13 THEN 16383    -- 00000000000000000011111111111111
      WHEN 14 THEN 32767    -- 00000000000000000111111111111111
      WHEN 15 THEN 65535    -- 00000000000000001111111111111111
      WHEN 16 THEN 131071    -- 00000000000000011111111111111111
      WHEN 17 THEN 262143    -- 00000000000000111111111111111111
      WHEN 18 THEN 524287    -- 00000000000001111111111111111111
      WHEN 19 THEN 1048575   -- 00000000000011111111111111111111
      WHEN 20 THEN 2097151   -- 00000000000111111111111111111111
      WHEN 21 THEN 4194303   -- 00000000001111111111111111111111
      WHEN 22 THEN 8388607   -- 00000000011111111111111111111111
      WHEN 23 THEN 16777215   -- 00000000111111111111111111111111
      WHEN 24 THEN 33554431   -- 00000001111111111111111111111111
      WHEN 25 THEN 67108863   -- 00000011111111111111111111111111
      WHEN 26 THEN 134217727  -- 00000111111111111111111111111111
      WHEN 27 THEN 268435455  -- 00001111111111111111111111111111
      WHEN 28 THEN 536870911  -- 00011111111111111111111111111111
      WHEN 29 THEN 1073741823  -- 00111111111111111111111111111111
      WHEN 30 THEN 2147483647  -- 01111111111111111111111111111111
      ELSE 0
    END
  RETURN(@iRes)
END
GO
 
IF EXISTS(SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[MD5_m_2Power]') AND xtype IN(N'FN', N'IF', N'TF'))
  DROP FUNCTION [dbo].[MD5_m_2Power]
GO
/*****************************************************************************
* Name: MD5_m_2Power
* Description: 常数组
*****************************************************************************/
CREATE FUNCTION dbo.MD5_m_2Power(
  @i  TINYINT
)
RETURNS INT
WITH ENCRYPTION
AS
BEGIN
  DECLARE @iRes  INT
  SELECT @iRes =
    CASE @i
      WHEN 0 THEN 1      -- 00000000000000000000000000000001
      WHEN 1 THEN 2      -- 00000000000000000000000000000010
      WHEN 2 THEN 4      -- 00000000000000000000000000000100
      WHEN 3 THEN 8      -- 00000000000000000000000000001000
      WHEN 4 THEN 16      -- 00000000000000000000000000010000
      WHEN 5 THEN 32      -- 00000000000000000000000000100000
      WHEN 6 THEN 64      -- 00000000000000000000000001000000
      WHEN 7 THEN 128     -- 00000000000000000000000010000000
      WHEN 8 THEN 256     -- 00000000000000000000000100000000
      WHEN 9 THEN 512     -- 00000000000000000000001000000000
      WHEN 10 THEN 1024     -- 00000000000000000000010000000000
      WHEN 11 THEN 2048     -- 00000000000000000000100000000000
      WHEN 12 THEN 4096     -- 00000000000000000001000000000000
      WHEN 13 THEN 8192     -- 00000000000000000010000000000000
      WHEN 14 THEN 16384    -- 00000000000000000100000000000000
      WHEN 15 THEN 32768    -- 00000000000000001000000000000000
      WHEN 16 THEN 65536    -- 00000000000000010000000000000000
      WHEN 17 THEN 131072    -- 00000000000000100000000000000000
      WHEN 18 THEN 262144    -- 00000000000001000000000000000000
      WHEN 19 THEN 524288    -- 00000000000010000000000000000000
      WHEN 20 THEN 1048576   -- 00000000000100000000000000000000
      WHEN 21 THEN 2097152   -- 00000000001000000000000000000000
      WHEN 22 THEN 4194304   -- 00000000010000000000000000000000
      WHEN 23 THEN 8388608   -- 00000000100000000000000000000000
      WHEN 24 THEN 16777216   -- 00000001000000000000000000000000
      WHEN 25 THEN 33554432   -- 00000010000000000000000000000000
      WHEN 26 THEN 67108864   -- 00000100000000000000000000000000
      WHEN 27 THEN 134217728  -- 00001000000000000000000000000000
      WHEN 28 THEN 268435456  -- 00010000000000000000000000000000
      WHEN 29 THEN 536870912  -- 00100000000000000000000000000000
      WHEN 30 THEN 1073741824  -- 01000000000000000000000000000000
      ELSE 0
    END
  RETURN(@iRes)
END
GO
 
IF EXISTS(SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[MD5_LShift]') AND xtype IN(N'FN', N'IF', N'TF'))
  DROP FUNCTION [dbo].[MD5_LShift]
GO
/*****************************************************************************
* Name: MD5_LShift
* Description: MD5_LShift
*****************************************************************************/
CREATE FUNCTION dbo.MD5_LShift(
   @iValue    INT
  ,@iShiftBits  TINYINT
)
RETURNS INT
WITH ENCRYPTION
AS
BEGIN
  DECLARE @iRes  BIGINT
  SET @iRes = CAST(@iValue AS BINARY(8))
  SET @iRes = @iRes * dbo.MD5_m_2Power(@iShiftBits)
  RETURN(CAST(@iRes & 0x00000000FFFFFFFF AS BINARY(4)))
END
GO
 
IF EXISTS(SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[MD5_RShift]') AND xtype IN(N'FN', N'IF', N'TF'))
  DROP FUNCTION [dbo].[MD5_RShift]
GO
/*****************************************************************************
* Name: MD5_RShift
* Description: MD5_RShift
*****************************************************************************/
CREATE FUNCTION dbo.MD5_RShift(
   @iValue    INT
  ,@iShiftBits  TINYINT
)
RETURNS INT
WITH ENCRYPTION
AS
BEGIN
  DECLARE @iRes  BIGINT
  SET @iRes = CAST(@iValue AS BINARY(8))
  SET @iRes = @iRes / dbo.MD5_m_2Power(@iShiftBits)
  RETURN(CAST(@iRes & 0x00000000FFFFFFFF AS BINARY(4)))
END
GO
 
IF EXISTS(SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[MD5_RotateLeft]') AND xtype IN(N'FN', N'IF', N'TF'))
  DROP FUNCTION [dbo].[MD5_RotateLeft]
GO
/*****************************************************************************
* Name: MD5_RotateLeft
* Description: MD5_RotateLeft
*****************************************************************************/
CREATE FUNCTION dbo.MD5_RotateLeft(
   @iValue    INT
  ,@iShiftBits  TINYINT
)
RETURNS INT
WITH ENCRYPTION
AS
BEGIN
  RETURN(dbo.MD5_LShift(@iValue, @iShiftBits) | dbo.MD5_RShift(@iValue, (32 - @iShiftBits)))
END
GO
 
IF EXISTS(SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[MD5_AddUnsigned]') AND xtype IN(N'FN', N'IF', N'TF'))
  DROP FUNCTION [dbo].[MD5_AddUnsigned]
GO
/*****************************************************************************
* Name: MD5_AddUnsigned
* Description: MD5_AddUnsigned
*****************************************************************************/
CREATE FUNCTION dbo.MD5_AddUnsigned(
   @iX    INT
  ,@iY    INT
)
RETURNS INT
WITH ENCRYPTION
AS
BEGIN
  DECLARE @iRes  BIGINT
  SET @iRes = CAST(CAST(@iX AS BINARY(8)) AS BIGINT) + CAST(CAST(@iY AS BINARY(8)) AS BIGINT)
  RETURN(CAST(@iRes & 0x00000000FFFFFFFF AS BINARY(4)))
END
GO
 
IF EXISTS(SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[MD5_F]') AND xtype IN(N'FN', N'IF', N'TF'))
  DROP FUNCTION [dbo].[MD5_F]
GO
/*****************************************************************************
* Name: MD5_F
* Description: MD5_F
*****************************************************************************/
CREATE FUNCTION dbo.MD5_F(
   @x    INT
  ,@y    INT
  ,@z    INT
)
RETURNS INT
WITH ENCRYPTION
AS
BEGIN
  RETURN((@x & @y) | ((~@x) & @z))
END
GO
 
IF EXISTS(SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[MD5_G]') AND xtype IN(N'FN', N'IF', N'TF'))
  DROP FUNCTION [dbo].[MD5_G]
GO
/*****************************************************************************
* Name: MD5_G
* Description: MD5_G
*****************************************************************************/
CREATE FUNCTION dbo.MD5_G(
   @x    INT
  ,@y    INT
  ,@z    INT
)
RETURNS INT
WITH ENCRYPTION
AS
BEGIN
  RETURN((@x & @z) | (@y & (~@z)))
END
GO
 
IF EXISTS(SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[MD5_H]') AND xtype IN(N'FN', N'IF', N'TF'))
  DROP FUNCTION [dbo].[MD5_H]
GO
/*****************************************************************************
* Name: MD5_H
* Description: MD5_H
*****************************************************************************/
CREATE FUNCTION dbo.MD5_H(
   @x    INT
  ,@y    INT
  ,@z    INT
)
RETURNS INT
WITH ENCRYPTION
AS
BEGIN
  RETURN(@x ^ @y ^ @z)
END
GO
 
IF EXISTS(SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[MD5_I]') AND xtype IN(N'FN', N'IF', N'TF'))
  DROP FUNCTION [dbo].[MD5_I]
GO
/*****************************************************************************
* Name: MD5_I
* Description: MD5_I
*****************************************************************************/
CREATE FUNCTION dbo.MD5_I(
   @x    INT
  ,@y    INT
  ,@z    INT
)
RETURNS INT
WITH ENCRYPTION
AS
BEGIN
  RETURN(@y ^ (@x | (~@z)))
END
GO
 
IF EXISTS(SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[MD5_FF]') AND xtype IN(N'FN', N'IF', N'TF'))
  DROP FUNCTION [dbo].[MD5_FF]
GO
/*****************************************************************************
* Name: MD5_FF
* Description: MD5_FF
*****************************************************************************/
CREATE FUNCTION dbo.MD5_FF(
   @a    INT
  ,@b    INT
  ,@c    INT
  ,@d    INT
  ,@x    INT
  ,@s   INT
  ,@ac  INT
)
RETURNS INT
WITH ENCRYPTION
AS
BEGIN
  SET @a = dbo.MD5_AddUnsigned(@a, dbo.MD5_AddUnsigned(dbo.MD5_AddUnsigned(dbo.MD5_F(@b, @c, @d), @x), @ac))
  SET @a = dbo.MD5_RotateLeft(@a, @s)
  SET @a = dbo.MD5_AddUnsigned(@a, @b)
  RETURN(@a)
END
GO
 
IF EXISTS(SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[MD5_GG]') AND xtype IN(N'FN', N'IF', N'TF'))
  DROP FUNCTION [dbo].[MD5_GG]
GO
/*****************************************************************************
* Name: MD5_GG
* Description: MD5_GG
*****************************************************************************/
CREATE FUNCTION dbo.MD5_GG(
   @a    INT
  ,@b    INT
  ,@c    INT
  ,@d    INT
  ,@x    INT
  ,@s   INT
  ,@ac  INT
)
RETURNS INT
WITH ENCRYPTION
AS
BEGIN
  SET @a = dbo.MD5_AddUnsigned(@a, dbo.MD5_AddUnsigned(dbo.MD5_AddUnsigned(dbo.MD5_G(@b, @c, @d), @x), @ac))
  SET @a = dbo.MD5_RotateLeft(@a, @s)
  SET @a = dbo.MD5_AddUnsigned(@a, @b)
  RETURN(@a)
END
GO
 
IF EXISTS(SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[MD5_HH]') AND xtype IN(N'FN', N'IF', N'TF'))
  DROP FUNCTION [dbo].[MD5_HH]
GO
/*****************************************************************************
* Name: MD5_HH
* Description: MD5_HH
*****************************************************************************/
CREATE FUNCTION dbo.MD5_HH(
   @a    INT
  ,@b    INT
  ,@c    INT
  ,@d    INT
  ,@x    INT
  ,@s   INT
  ,@ac  INT
)
RETURNS INT
WITH ENCRYPTION
AS
BEGIN
  SET @a = dbo.MD5_AddUnsigned(@a, dbo.MD5_AddUnsigned(dbo.MD5_AddUnsigned(dbo.MD5_H(@b, @c, @d), @x), @ac))
  SET @a = dbo.MD5_RotateLeft(@a, @s)
  SET @a = dbo.MD5_AddUnsigned(@a, @b)
  RETURN(@a)
END
GO
 
IF EXISTS(SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[MD5_II]') AND xtype IN(N'FN', N'IF', N'TF'))
  DROP FUNCTION [dbo].[MD5_II]
GO
/*****************************************************************************
* Name: MD5_II
* Description: MD5_II
*****************************************************************************/
CREATE FUNCTION dbo.MD5_II(
   @a    INT
  ,@b    INT
  ,@c    INT
  ,@d    INT
  ,@x    INT
  ,@s   INT
  ,@ac  INT
)
RETURNS INT
WITH ENCRYPTION
AS
BEGIN
  SET @a = dbo.MD5_AddUnsigned(@a, dbo.MD5_AddUnsigned(dbo.MD5_AddUnsigned(dbo.MD5_I(@b, @c, @d), @x), @ac))
  SET @a = dbo.MD5_RotateLeft(@a, @s)
  SET @a = dbo.MD5_AddUnsigned(@a, @b)
  RETURN(@a)
END
GO
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'