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2 – Data Classification and RolesListing 2-3 creates the database users for our sample database. Please note thatin order to successfully execute this script your login account will need to haveALTER ANY USER permissions to the database.USE HomeLending;GO-- Creates Database Users Mapped to SQL Server LoginsCREATE USER SMITHJW FOR LOGIN SMITHJW;GOCREATE USER JONESBF FOR LOGIN JONESBF;GOCREATE USER JOHNSONTE FOR LOGIN JOHNSONTE;GOCREATE USER KELLEYWB FOR LOGIN KELLEYWB;GOCREATE USER REAGANCX FOR LOGIN REAGANCX;GOCREATE USER WOLFBA FOR LOGIN WOLFBA;GOListing 2-3: Creating the six database users, corresponding to our SQL Serverlogins.Assigning Members to RolesHaving created the roles, SQL Server logins and the database users for oursample database, we are now ready to assign membership of each databaserole. This is accomplished through the execution of the sp_addrolemembersystem stored procedure. The syntax of this system stored procedure is asfollows:sp_addrolemember [Role Name],[Member Name]This system stored procedure's arguments are:• Role Name: The textual reference to the database role in whichmembers are being added.• Member Name: The textual reference to the database user, databaserole, Windows login or Windows group that is being added to thedatabase role specified in the role name argument.45
2 – Data Classification and RolesTo begin the assignment of members to our roles we will first want to considerthe inheritance of our sensitivity classes. All users within theSensitive_high role are also able to access the items granted to theSensitive_medium and Sensitive_low roles. All users within theSensitive_medium role also have access to the items granted to theSensitive_low role.Rather than maintaining individual users in all of these roles, we can use thescript in Listing 2-4 to implement this inheritance hierarchy. Please note that inorder to successfully execute this script your login account will need to haveeither membership to the db_owner server role or ALTER permissions to therole.USE HomeLending;GO-- Sensitive_medium role is a member of Sensitive_lowEXEC sp_addrolemember 'Sensitive_low', 'Sensitive_medium';GO-- Sensitive_high role is a member of Sensitive_mediumEXEC sp_addrolemember 'Sensitive_medium', 'Sensitive_high';GOListing 2-4: Implementing the inheritance hierarchy in our sensitivity classes.With this inheritance established, we can now begin to assign the databaseusers to the roles that define their level of access to sensitive data. For oursample database we will assign two database users to each role, as shown inListing 2-5.USE HomeLending;GO-- These users have been determined to have access to lowsensitive dataEXEC sp_addrolemember 'Sensitive_low', 'SMITHJW';GOEXEC sp_addrolemember 'Sensitive_low', 'JONESBF';GO-- These users have been determined to have access to meduimsensitive dataEXEC sp_addrolemember 'Sensitive_medium', 'JOHNSONTE';GOEXEC sp_addrolemember 'Sensitive_medium', 'KELLEYWB';GO46
Page 1: High Performance SQL ServerProtecti
Page 4 and 5: Table of ContentsAbout the Author .
Page 6 and 7: Protection via Normalization ......
Page 8 and 9: Views and Stored Procedures .......
Page 10 and 11: Numeric Variance ..................
Page 12 and 13: Key_ID ............................
Page 14 and 15: ACKNOWLEDGEMENTSBooks are not writt
Page 16 and 17: IntroductionIn all cases, the conse
Page 18 and 19: Introduction"lost key" displaced by
Page 20 and 21: CHAPTER 1: UNDERSTANDINGSENSITIVE D
Page 22 and 23: 1 - Understanding Sensitive DataSen
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4 - Encryption Basics for SQL Serve
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5 - Cell-Level Encryptionthe encryp
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5 - Cell-Level EncryptionSearching
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5 - Cell-Level EncryptionPreparing
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5 - Cell-Level EncryptionUSE HomeLe
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5 - Cell-Level Encryptionself-signe
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5 - Cell-Level Encryptionwithin SQL
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5 - Cell-Level EncryptionTesting th
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5 - Cell-Level Encryptioncolumn. Cu
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5 - Cell-Level EncryptionFROMdbo.Bo
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5 - Cell-Level Encryptioncolumn con
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5 - Cell-Level Encryptionthat is a
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5 - Cell-Level EncryptionBEGIN TRY-
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5 - Cell-Level Encryption);)@Identi
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5 - Cell-Level Encryption• The sc
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6 - Transparent Data EncryptionHow
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6 - Transparent Data EncryptionCons
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6 - Transparent Data Encryptionand
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6 - Transparent Data EncryptionNoti
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6 - Transparent Data EncryptionUSE
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6 - Transparent Data EncryptionThe
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6 - Transparent Data EncryptionGONO
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6 - Transparent Data Encryptionand
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6 - Transparent Data EncryptionUSE
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CHAPTER 7: ONE-WAYENCRYPTIONAs a ch
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7 - One-Way EncryptionBenefits and
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7 - One-Way Encryption• A match i
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7 - One-Way EncryptionPlain TextEnd
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7 - One-Way EncryptionReducing Vuln
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7 - One-Way EncryptionUse HomeLendi
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7 - One-Way EncryptionEXEC sp_addex
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7 - One-Way EncryptionLater in this
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7 - One-Way EncryptionUSE HomeLendi
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7 - One-Way EncryptionWHEREBorrower
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7 - One-Way Encryption-- Return Sea
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7 - One-Way EncryptionEXECUTE AS US
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CHAPTER 8: OBFUSCATIONHalloween is
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8 - Obfuscation• Artificial Data
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8 - ObfuscationHowever, not all val
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8 - ObfuscationRepeating Character
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8 - ObfuscationASSELECTdbo.Characte
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8 - ObfuscationGO181
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8 - ObfuscationSET Identification_V
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8 - ObfuscationThe Purpose_Type_ID
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8 - ObfuscationArtificial Data Gene
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9 - Honeycombing a DatabaseUse Home
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9 - Honeycombing a DatabaseUSE Mast
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9 - Honeycombing a DatabaseLog Item
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9 - Honeycombing a Databaseto 127.
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9 - Honeycombing a Databaseavailabl
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9 - Honeycombing a DatabaseAvoid SQ
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10 - Layering SolutionsDesign for P
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10 - Layering SolutionsObfuscationU
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10 - Layering SolutionsThe completi
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APPENDIX A: VIEWS ANDFUNCTIONS REFE
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Appendix A - Views and Functions Re
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APPENDIX B: THE HOMELENDINGDATABASE
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Appendix B - The HomeLending databa
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About Red GateYou know those annoyi
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