首先是长度问题,为什么长度一大就解密失败,来看看@real_decrypt_01的定义并进行初始化@real_decrypt_01的语句: DECLARE @real_decrypt_01 nvarchar(max) SET @real_decrypt_01 = replicate(N'A', (datalength(@real_01) /2 )) 1. 2. 3. 乍一看没什么问题,但我们使用LEN(@real_decrypt_01)输出看看,最大...
This database decryptor program allows users to export the encrypted SQL Server database with or without encryption. It means, by selecting Without Encryption, you can decrypt the database before exporting. With encryption option will permit exporting the database to a new database be keeping the...
CREATEFUNCTIONDecryptData(@encryptedDataVARBINARY(MAX))RETURNSNVARCHAR(255)ASBEGINDECLARE@decryptedDataNVARCHAR(255);-- 打开对称密钥以进行解密OPENSYMMETRICKEYMySymmetricKey DECRYPTIONBYPASSWORD='YourStrongPassword123';-- 执行解密SET@decryptedData=CONVERT(NVARCHAR(255),DECRYPTBYKEY(@encryptedData));-- 关闭对称...
DECLARE @real_decrypt_01 nvarchar(max) SET @real_decrypt_01 = replicate(N'A', (datalength(@real_01) /2 )) 乍一看没什么问题,但我们使用LEN(@real_decrypt_01)输出看看,最大输出长度为4000,可能问题就出现NVARCHAR的长度上了,理论上NVARCHAR(MAX)支持2G的大小。为什么会出现这种情况没有研究过,但有人...
-- First, open the symmetric key with which to decrypt the data. OPEN SYMMETRIC KEY SSN_Key_01 DECRYPTION BY CERTIFICATE HumanResources037; GO -- Now list the original ID, the encrypted ID, and the -- decrypted ciphertext. If the decryption worked, the original -- and the decrypted...
DECRYPTBYPASSPHRASE( 'My password used to encrypt this string in 2008.', secret) as varchar(100) --解密后是二进制数据,必须要转化成文本 ) from #SecretInfo 2、主密钥 在SQL Server中把加密放到层次结构形式中,可以提供多级别的安全。SQL Server包含两个用于加密数据的密钥类型。
Decrypt selected SQL objects with a single click Object filter Filter objects by type and/or state SSMS and Visual Studio integration Decrypt SQL Server database directly from the Object Explorer and Server Explorer right-click context menus in SSMS and Visual Studio Visual themes Customize the vi...
Decrypt selected SQL objects with a single click Object filter Filter objects by type and/or state SSMS and Visual Studio integration Decrypt SQL Server database directly from the Object Explorer and Server Explorer right-click context menus in SSMS and Visual Studio Visual themes Customize the vi...
Key rotation is an online operation and should only take a few seconds to complete. The operation only decrypts and re-encrypts the database encryption key, not the entire database. Rotation of the TDE protector can either be done manually or by using the automated rotation ...
When a database is first attached or restored to a new instance of SQL Server, a copy of the database master key (encrypted by the service master key) is not yet stored in the server. You must use theOPEN MASTER KEYstatement to decrypt the database master key (DMK). Once the DMK ...