HP UX Security Products and Features Software Validation Sequence, Verifying a Certiﬁcate Chain

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Common Data Security Architecture (CDSA) White Paper

Validating the CSP Credentials

Certiﬁcate 2’s public key, and so on.

Figure 1-8	Verifying a Certiﬁcate Chain
Certiﬁcate 0
Issuer: Root Issuer		Certiﬁcate 1
Subject: Root Issuer		Issuer: Root Issuer
Root Public Key		Subject: Issuer A

DSA Signature

Public Key

	Certiﬁcate 2
	Issuer: Issuer A	Certiﬁcate 3
	Subject: Issuer B	Certiﬁcate 3
	DSA Signature	Issuer: Issuer B
	Public Key	Issuer: Issuer B
	Public Key	Subject: Signer
		Subject: Signer
		DSA Signature
		Public Key

The Validation Sequence

The validation process is comprised of three phases:

•Integrity check by the CSSM of the CSP shared library prior to loading

•Self-check of the CSP by itself

•Bilateral authentication check of the CSSM by the CSP

NOTE	The CSP add-in module is not used in the validation sequence. Instead,
	duplicate cryptographic functions for validating DSA signatures and
	calculating SHA-1 hashes are embedded in the integrity checking library
	of the HP CDSA Framework.

CSP shared libraries are validated in the order they are loaded by the CDSA application user.

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Chapter 1

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Contents Contents Sample Install Program Generating the Credential File Migrating to Cdsa ZIP format Private Key FileCommon Data Security Architecture Cdsa White Paper ChapterGlossary of Cdsa Terms and Acronyms Glossary of Cdsa Terms and AcronymsGlossary of Cdsa Terms and Acronyms RC2 Glossary of Cdsa Terms and Acronyms Glossary of Cdsa Terms and Acronyms Glossary of Cdsa Terms and Acronyms Glossary of Cdsa Terms and Acronyms HP’s Implementation of Cdsa What Is CDSA?What Is CDSA? HP-UX Cdsa Product OverviewWhat Is CDSA? Cdsa Components in HP-UX Cdsa Components on HP-UXWhat Is CDSA? Cdsa in the Context of Other Security Applications Example of Cdsa APIs Used for Applications vs. SharedLibraries CDSA, shown relative to higher-level protocols and user ApplicationsHP’s Paradigm Shift Common Security Services Manager Cssm Common Security Services Manager Cssm APICssm Module Information Files Cssmnotlongfilenamesys Public/Private Key Algorithms Cryptography Service Provider CSP APICryptography Service Provider CSP API Dual Asymmetric Key AlgorithmSymmetric Key Algorithm Authenticating a Digital Signature RC2 or RC4Cryptography Service Provider CSP API Hash Interaction between CSP and Applications CSP Operations Cryptography Service Provider CSP API Cryptography Service Provider CSP API Extensibility Functions Supported Functions and AlgorithmsCssmalgidcdmf Cssmalgiddsa Cssmalgiddh Purpose Pass-Through ID Certiﬁcate Library Services CL API Certiﬁcate Library Services CL APIWhat is a Certiﬁcate? Outline of a Generic CertiﬁcateCertiﬁcate Revocation List CRL and Operations Interaction between Certiﬁcate Library and Application Operations on Certiﬁcates Interaction between Cssm and Certiﬁcate Library InterfaceCertiﬁcate Library Interface Certiﬁcate Library Services CL API Certiﬁcate Library Services CL API Certiﬁcate Library Services CL API INTELX509V3PASSTHROUGHCREATEENCODEDNAME INTELX509V3PASSTHROUGHENCODENAME INTELX509V3PASSTHROUGHENCODEALGID INTELX509V3PASSTHROUGHREADCERTFROMFILE INTELX509V3PASSTHROUGHENCODEREVOKEDCERTLIST INTELX509V3PASSTHROUGHFINDSUPPORTINGCSP INTELX509V3PASSTHROUGHCSSMKEYTOSPKI Introduction to Add-in Modules Role of Add-In Modules in the Cdsa FrameworkIntroduction to Add-in Modules Design Criteria for Add-In Modules Global Unique Identiﬁer GuidInitializer Code to Register Services with Cssm Add-In Module Install ProgramTo Install an Add-In Library How to Create a Cdsa Add-In Module for How to Create a Cdsa Add-In Module for HP-UXLd -b -o libmylib.1 +I MyAddInInit Implementing Integrity Checking in Add-In Modules Programming Self-Check Functions into the Initializer How to Create a Cdsa Add-In Module for HP-UX How to Create a Cdsa Add-In Module for HP-UX How to Create a Cdsa Add-In Module for HP-UX How to Create a Cdsa Add-In Module for HP-UX Typeprocedure How to Create a Cdsa Add-In Module for HP-UX Or specify the following for CL/TP/DL add-ins With a Cssm capable of integrity checking Certiﬁcate Chain Validating the CSP CredentialsCredential File Validating the CSP CredentialsValidation Sequence Verifying a Certiﬁcate ChainIntegrity Check prior to Loading Verifying the signature on the .SF ﬁleSHA-1 Self Check 11 Verifying the validity of the CSP libraryBilateral Authentication In-Memory vs. Static CheckingConcluding Remarks Further ReferencesConcluding Remarks Concluding Remarks Sample Install Program Appendix aAppendix a Appendix a Cssmapimemoryfuncs Appendix a Else if argc != Destpath Sample Install Program Appendix a Sample Install Program Generating the Credential File Appendix BHP Signing Policy for CSP Add-In Vendors for Cdsa Version HP Signing Policy for CSP Add-In Vendors for Cdsa VersionSample Add-in Module Code Appendix CAppendix C Appendix C Sample Add-in Module Code Appendix C Cssmreturn = Null Sample Add-in Module Code == Cssmfail Cssmmodulefuncs Appendix C Sample Add-in Module Code Appendix C Sample Add-in Module Code Data 100 Appendix C 101 102 Appendix C 103 104 Functions Needed for Add-in Module Integrity Appendix D 105106 Trouble Shooting HP Cdsa Appendix E 107Cdsa API Errors Cdsa API Errors108 Appendix E 109 110 Appendix E 111 112 Appendix E 113 114 Appendix E 115 116 Appendix E 117 Cdsa Start Up Errors when calling CSSMModuleAttach Cdsa Start Up Errors when calling CSSMModuleAttach118 Appendix E 119 Using DDE to Debug Cdsa Applications Debugging Core Dumps120 Migrating to Cdsa Appendix F 121122 Appendix F 123 DL data structures 124ZIP format Appendix G 125126 Appendix G 127 128 Private Key File Appendix H 129Private Key File Contention 130

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