MSSQL SQL2005中自带DES加密算法

 1 CREATE SYMMETRIC KEY key1 WITH ALGORITHM=DES
 2     ENCRYPTION BY PASSWORD='abc$123'
 3 GO
 4 
 5 OPEN SYMMETRIC KEY key1    
 6     DECRYPTION BY PASSWORD='abc$123'
 7 
 8 DECLARE @str NVARCHAR(100),@Encrypted VARBINARY(MAX)
 9 SET @str=N'要加密的字串'    
10 SELECT @Encrypted=ENCRYPTBYKEY(KEY_GUID('key1'),@str)
11 SELEcT '加密'=@Encrypted ,'解密'=CAST(DECRYPTBYKEY(@Encrypted) AS NVARCHAR(100))
12 CLOSE SYMMETRIC KEY key1
13 GO
14 DROP SYMMETRIC KEY key1
15 GO

--SQL2005中自带DES加密算法