Question

我需要使用DES编码一些字符串（不是三重DES - 我知道有很多文章描述了如何使用NCRYPTBYPASSPHRASE命令）。我有钥匙和IV。我怎么用T-SQL做到这一点？有没有现成的程序或功能？

Answer 1

从here翻录。我没有对此进行测试，但this页面列出了所有加密类型，DES似乎是其中之一。

--If there is no master key, create one now. 
IF NOT EXISTS 
    (SELECT * FROM sys.symmetric_keys WHERE symmetric_key_id = 101)
    CREATE MASTER KEY ENCRYPTION BY 
    PASSWORD = '23987hxJKL969#ghf0%94467GRkjg5k3fd117r$$#1946kcj$n44nhdlj'
GO

CREATE CERTIFICATE HumanResources037
   WITH SUBJECT = 'Employee Social Security Numbers';
GO

CREATE SYMMETRIC KEY SSN_Key_01
    WITH ALGORITHM = DES
    ENCRYPTION BY CERTIFICATE HumanResources037;
GO

-- Open the symmetric key with which to encrypt the data.
OPEN SYMMETRIC KEY SSN_Key_01
   DECRYPTION BY CERTIFICATE HumanResources037;

-- Encrypt the value 
SET @encrypted = EncryptByKey(Key_GUID('SSN_Key_01'), '555-77-4444');

使用DES（非三重）算法在T-SQL中加密数据

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