HP UX Security Products and Features Software 7

Common Data Security Architecture (CDSA) White Paper

Glossary of CDSA Terms and Acronyms

Secure Electronic Transactions (SET)

A standard to enable online credit card transactions, using public-key encryption and digital signature validation.

Secure Multipurpose Internet Mail Extensions (S/MIME)

A secure protocol for sending e-mail using RSA encryption and following the syntax provided in the PKCS format #7.

Secure Sockets Layer (SSL)

A protocol created by Netscape Communications, Inc. for managing the security of message transmissions in a network, using RSA’s public and private key encryption.

Transmission Control Protocol/Internet Protocol (TCP/IP)

The basic communications language (protocol) of the Internet, including intranets and extranets. The TCP portion assembles a message or ﬁle into smaller packets for transmission and reassembles at reception; the IP layer handles the address portion of the packet to ensure that it reaches its destination. TCP/IP is used by other Internet protocols, such as HTTP, FTP, telnet, and SMTP.

Trust Policy Library (TP)

A set of rules used to determine if a requester is trusted or authorized to perform an action on a data object. Typical actions requiring trust veriﬁcation include signing or verifying of certiﬁcates and CRLs, revoking certiﬁcates, and other application-speciﬁc actions or operations.

X.509 certiﬁcate

A certiﬁcate is a digital document containing a public key and a name and allowing authentication of the source of the data accompanying the certiﬁcate. X.509 is the most accepted format for certiﬁcates and is deﬁned by the ITU-T X.509 international standard.

authentication

The assurance that persons “are who they say they are” in a communication or transaction.

bilateral authentication

Checks performed between software modules to ensure that software modules using services from each other are valid and uncompromised. The CSSM checks the integrity of add-in modules to ensure that no malicious or corrupted module is added to the system.

Chapter 1

7

Contents

Contents 1. Common Data Security Architecture (CDSA) White Paper A.Sample Install Program B.Generating the Credential File C.Sample Add-inModule Code D.Functions Needed for Add-inModule Integrity E.Trouble Shooting HP CDSA Common Data Security Architecture (CDSA) White Paper Glossary of CDSA Terms and Acronyms Glossary of CDSA Terms and Acronyms Page Page Page Page Page Page HP’s Implementation of CDSA Page CDSA Components in HP-UX Page Use CSSM_CL* APIs for developing applications using the CL shared library Use CL_* APIs for developing CL add-inmodules CDSA in the Context of Other Security Applications CDSA, shown relative to higher-levelprotocols and user applications End User Applications Higher-LevelSecurity Protocols (PKCS, SSL, S/MIME, IPSEC, SET, et al.) Common Security Services Manager (CSSM) APIs Crypotgraphy Certificate HP’s Paradigm Shift Common Security Services Manager (CSSM) API Common Security Services Manager (CSSM) API CSSM Module Information Files Page Public/Private Key Algorithms Symmetric Key Algorithm Figure 1-6Symmetric Key Algorithm [1] RC2 or RC4 [2] [3] Page Cryptography Service Provider (CSP) API [1] hash [2] [3] Interaction between CSP and Applications CSP Operations Page Page Extensibility Functions Supported Functions and Algorithms Algorithm IDs, shown with keysize speciﬁcation in bits: —CSSM_ALGID_CDMF; The effective key size of a 64-bitCDMF key is 40 bits —CSSM_ALGID_RC2; <=40, in any multiple of 8, between 8 and —CSSM_ALGID_RC4; <=40, in any multiple of 8, between 8 and •Digital Signature and Validation Algorithm ID: —CSSM_ALGID_MD5WithRSA —CSSM_ALGID_SHA1WithRSA —CSSM_ALGID_SHA1WithDSA •Parameter Generation Algorithm ID: Page What is a Certiﬁcate Certiﬁcate Revocation List (CRL) and Operations Interaction between Certiﬁcate Library and Application Operations on Certiﬁcates Certiﬁcate Operations Certiﬁcate Revocation List Operations Page output = CSSM_CL_PassThrough(CLHandle, PassThroughID, Input); INTEL_X509V3_PASSTHROUGH_ENCODE_CERTIFICATE INTEL_X509V3_PASSTHROUGH_DECODE_CERTIFICATE INTEL_X509V3_PASSTHROUGH_FREE_CERTIFICATE INTEL_X509V3_PASSTHROUGH_CREATE_ENCODED_NAME INTEL_X509V3_PASSTHROUGH_ENCODE_NAME INTEL_X509V3_PASSTHROUGH_DECODE_NAME INTEL_X509V3_PASSTHROUGH_FREE_NAME INTEL_X509V3_PASSTHROUGH_TRANSLATE_DERNAME_TO_STRING INTEL_X509V3_PASSTHROUGH_ENCODE_EXTENSION INTEL_X509V3_PASSTHROUGH_ENCODE_EXTENSIONS INTEL_X509V3_PASSTHROUGH_DECODE_EXTENSIONS INTEL_X509V3_PASSTHROUGH_FREE_EXTENSIONS INTEL_X509V3_PASSTHROUGH_ALGID_TO_ALGOID INTEL_X509V3_PASSTHROUGH_ALGOID_TO_ALGID INTEL_X509V3_PASSTHROUGH_DECODE_ALGID INTEL_X509V3_PASSTHROUGH_FREE_ALGID INTEL_X509V3_PASSTHROUGH_OPEN_FILE INTEL_X509V3_PASSTHROUGH_CLOSE_FILE INTEL_X509V3_PASSTHROUGH_WRITE_CERT_TO_FILE INTEL_X509V3_PASSTHROUGH_ENCODE_SIGNED_CRL INTEL_X509V3_PASSTHROUGH_DECODE_SIGNED_CRL INTEL_X509V3_PASSTHROUGH_FREE_SIGNED_CRL INTEL_X509V3_PASSTHROUGH_ENCODE_TBS_CERTLIST INTEL_X509V3_PASSTHROUGH_DECODE_TBS_CERTLIST INTEL_X509V3_PASSTHROUGH_DECODE_REVOKED_CERTLIST INTEL_X509V3_PASSTHROUGH_FREE_REVOKED_CERTLIST INTEL_X509V3_PASSTHROUGH_ENCODE_REVOKED_CERT_ENTRY INTEL_X509V3_PASSTHROUGH_DECODE_REVOKED_CERT_ENTRY INTEL_X509V3_PASSTHROUGH_FREE_REVOKED_CERT_ENTRY INTEL_X509V3_PASSTHROUGH_CSSMKEY_TO_SPKI INTEL_X509V3_PASSTHROUGH_SPKI_TO_CSSMKEY The Role of Add-InModules in the CDSA Framework Design Criteria for Add-InModules Global Unique Identiﬁer (GUID) Initializer Code to Register Services with CSSM Add-InModule Install Program To Install an Add-InLibrary How to Create a CDSA Add-InModule for HP-UX How to Create a CDSA Add-InModule for HP-UX Example: Page Implementing Integrity Checking in Add-InModules Programming Self-CheckFunctions into the Initializer ISL_SelfCheck ISL_SelfCheck does the following: ISL_SelfCheck •Retrieves self-checkcredentials from /usr/lib/cdsa/meta-inf •Veriﬁes the add-inmodule ISL_RetrieveSelfCheckCredentials GetModulePath The credential name has the form /usr/lib/cdsa/meta-inf/some-add-in.dsa ISL_RetrieveSelfCheckKey To make this function, the add-inprovider needs to ask HP to: •create a DSA public/private key pair for the add-inprovider •embed the public key in the function whose prototype is shown below The private key will be used in the signing process to create a credential ﬁle Programming AddInAuthenticate() to Perform Bilateral Authentication Please contact HP when you have need for these functions Sample Code Showing Bilateral Authentication in AddInAuthenticate() Page Completing the Development of a CSP that Performs Integrity Checking Page The Credential File X.509 Certiﬁcate Chain The Validation Sequence Integrity Check prior to Loading .DSA file, containing signer's DSA signature DSA Did the Signer's .SF file, containing hash of data in .MF file Are .MF or .SF file SHA-1 has been The Self Check Bilateral Authentication In-Memoryvs. Static Checking Further References Page Sample Install Program Appendix A Page Page Page Page Page Page Page Page Generating the Credential File HP Signing Policy for CSP Add-InVendors for CDSA Version HP Signing Policy for CSP Add-InVendors for CDSA Version C Sample Add-inModule Code Appendix C Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page D Functions Needed for Add-inModule Integrity IMPORTANT E Trouble Shooting HP CDSA CDSA API Errors CDSA API Errors Appendix E Page Page Page Page Page Page Page Page Page CDSA Start Up Errors when calling CSSM_ModuleAttach CDSA Start Up Errors when calling CSSM_ModuleAttach Page Debugging Core Dumps Using DDE to Debug CDSA Applications Migrating to CDSA Appendix F The following CDSA 1.2 data structures may be changed or obsoleted in CDSA 2.0: CSSM core data structures: CL data structures: DL data structures: CSP data structures: TP data structures: G ZIP format Appendix G Page Page H The Private Key File