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The next step queried the varbinary(8000) value that was inserted, returning an unintelligble value: SELECT Secret FROM #SecretInfo The data was then decrypted using the DecryptByPassPhrase function, which took the password as the first parameter (the one originally used to encrypt the data in the first place), and a reference to the encrypted data in the Secret column of the #SecretInfo temporary table: SELECT CAST(DecryptByPassPhrase( 'My Password Used To Encrypt This String in 2005.', Secret) as varchar(50)) FROM #SecretInfo Passphrase encryption functions allow you to encrypt data without fear of even sysadmin server role members reading the data (sysadmin server role members, as you ll see in this chapter, have inherent permissions to read other forms of encrypted data). The encrypted data will be protected from database backup theft or even the infiltration of the database while on the SQL Server instance, assuming that you haven t stored the password in a table or used the password in any of your modules (stored procedures, triggers, and so on).

-gdwarf: This option causes GCC to produce debugging information in DWARF (version 1) format, used by the SDB debugger on most System V Release 4 systems -gdwarf+: This option causes GCC to produce debugging information in DWARF version 1 format using GNU extensions understood only by GDB Debugging applications compiled with this option using other debuggers, or compiling them with toolchains that are not strictly composed on GNU tools may cause unexpected behavior -gdwarf-2: This option causes GCC to produce debugging information in DWARF version 2 format, which is used by the DBX debugger on IRIX 6 -gen-decls: This Objective C option causes GCC to dump interface declarations for all classes seen in each source file to a file named sourcenamedecl -ggdb: This option causes GCC to produce debugging information that is targeted for use by GDB.

Encryption in SQL Server 2005 is handled in a hierarchical manner. SQL Server 2005 includes two key types that are used to encrypt SQL Server 2005 data. The Service Master Key is at the top of the hierarchy and is automatically created when SQL Server is installed. The Service Master Key is also used to encrypt Database Master Keys below it. Database Master Keys are then used to encrypt certificates, and both asymmetric and symmetric keys. This layering of keys and certificates provides stronger encryption. In this section, I ll discuss these two different types of keys: the Service Master Key and Database Master Key.

Using this option tells GCC to employ the debugging options that provide the greatest amount of detail for the target platform..

As stated before, the Service Master Key is at the top of the encryption hierarchy in SQL Server 2005 and is responsible for encrypting system data, linked server logins, and Database Master Keys. is the Service Master Key is automatically generated the first time it is used by SQL Server to encrypt a credential, Database Master Key, or linked server password, and it s generated using the Windows credentials of the SQL Server service account. If you have to change the SQL Server service account, Microsoft recommends that you use SQL Server Configuration Manager, because this tool will perform the appropriate decryptions and encryptions required to generate a new Service Master Key, while keeping the encryption hierarchy intact. The Database Master Key is an additional layer of SQL Server 2005 security in the encryption hierarchy, which allows you to encrypt database certificates and asymmetric keys. Each database can contain only a single database master key, which, when created, is encrypted by the Service Master Key. When you re creating an asymmetric key (reviewed later in the chapter), you can decide whether or not to include a password for encrypting the private key of the asymmetric key pair. If a password is not included, however, the database master key is then used to encrypt the private key instead. This is a good example of using the Database Master Key to encrypt other objects. In this next group of recipes, I ll demonstrate how to manage these two different key types.

-gstabs: This option forces GCC to produce debugging information in the STABS format without using the GDB extensions The STABS format is used by most debuggers on BSD and Linux systems GDB can still be used to debug these applications but will not be able to debug them as elegantly as if the -gstabs+ option had been specified -gstabs+: This option causes GCC to produce debugging information in STABS format, using the GDB extensions that are only meaningful to GDB Debugging applications compiled with this option, using other debuggers or compiling them with toolchains that are not strictly composed on GNU tools may cause unexpected behavior -gvms: This sad, lonely debugging option is only relevant to users who are writing applications intended to be executed and debugged by the DEBUG application on VMS systems.