sql生成6为随机数,然后加密实现

 

-------产生六位的随机数

declare @RandNumber uniqueidentifier

declare @Number nvarchar(10)

set @RandNumber = NewID()

--------MD5函数

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

----调用MD5

exec dbo.MD5(left(@randNumber,6)

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