The internet is littered with methods to decrypt encrypted procs, etc. Also, depending on supposed encrypted procs is virtually no protection at all. There are too many people with the correct privs to unhide them. I'll also have to add that storing anything in a supposed hidden file or registry entry is a bit crazy. The purpose of this tip it to show a simple way of encryption that is very easy to implement. I agree that using using certificates is a more secure method. Please be aware that this script is susceptible to injection attacks, and an attacker could leverage bugs like this one for batch injection Additionally, in your comments, you added a script to an xp_cmdshell payload (as I understand, to execute a separate program that would perform the encryption). Another advantage for this option is that these objects can beĮncrypted using the WITH ENCRYPTION option and to further improve the sec SQL Server Encryption Stored procedureģ. The built-in SQL Server ENCRYPTBYPHRASE and DECRYPTBYPASSPHRASE functions in the applicationĬode. T-SQL Scalar UDF for the decryption process is good for generalizing all calls to This method of using a T-SQL stored procedure for the encryption process and a The customers table has a column name Encrypted_CredCard varbinary(256).The customers table has a key column named CustID varchar(20) NULL.There are two items that are important to note for the Customers table: The stored procedure will get a secret phrase that is not stored in the database These objects will use the built-in SQL Server ENCRYPTBYPHRASE and DECRYPTBYPASSPHRASE functions. For ourĪpplication, the method for solving this problem involves an encryption T-SQLĪnd a T-SQL decryption function.
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Store sensitive data prior to considering any solution. First and foremost, be sure you are well aware of the legal requirements to