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Public Key Infrastructure in EBusiness

Public Key Infrastructure in EBusiness. By Umair Ali. Introduction. PKI - a security architecture – over the internet. Provides an increased level of confidence for exchanging information. architecture addresses confidentiality, integrity, non-repudiation and authorization of data.

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Public Key Infrastructure in EBusiness

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  1. Public Key Infrastructurein EBusiness By Umair Ali

  2. Introduction • PKI - a security architecture – over the internet. • Provides an increased level of confidence for exchanging information. • architecture addresses confidentiality, integrity, non-repudiation and authorization of data. • Supports the distribution, management, expiration, rollover, backup, revoking of public and private keys

  3. Components of PKI • The End-Entities (EE) – end user or an application. • The Certificate Authority (CA) – third party assigns certificates • The Certificate Repository (CR) - stores certificates that are issued and also revoked certificates • The Registration Authority (RA) – optional component • Digital Certificates (X.509 V3) -

  4. Implementation steps • Gather information • Make decision • Choose PKI vendors • Prepare infrastructure • Implement PKI

  5. PKI interoperability • also known as multi vendor interoperability – where different technologies from different vendors are used by different clients including different applications. • Interoperability helps to support transactions between different parties that use different technology supplied by the different vendors

  6. PKI interoperability - Issues • Different policies for issued certificates • Different features in PKI applications • Different certificate storage and retrieval standards • Different X.509 extensions • Different obligations on certificate subjects • Different PKI knowledge among organizational staff

  7. Interoperability Model • Hierarchical model • Peer to Peer model also known as Mesh Model • Bridge Model

  8. Hierarchical Model http://www.galexia.com/public/research/assets/pki_interoperability_models_2005/pki_interoperability_models_2005-4_1_.html

  9. Cross-Certification (Mesh) Model http://www.galexia.com/public/research/assets/pki_interoperability_models_2005/pki_interoperability_models_2005-4_1_.html

  10. Bridge Model http://www.galexia.com/public/research/assets/pki_interoperability_models_2005/pki_interoperability_models_2005-4_1_.html

  11. Current important PKI Designs • Europe - ISA • OASIS PKI Forum • The Asia PKI Forum • APEC

  12. Thank you for your attention You question My Answer 

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