| PKI: SSL, S/MIME, Certificates, & Signatures |  
      
  
    - 1st Annual PKI Workshop
 
    - http://www.cs.dartmouth.edu/~pki02/ 
 
    -   
 
    - Ankit Fadia
 
    - 
    
- Kerberos Torn Apart
 
    http://www.ankitfadia.com/kerberos.htm  
    - SSL Torn Apart
 
    http://www.ankitfadia.com/ssl.htm  
     
    -   
 
    - ASN.1 Homepage
 
    - http://www-sop.inria.fr/rodeo/personnel/hoschka/asn1.html    
  
    -   
 
    - ASN.1 Information Site
 
    - http://asn1.elibel.tm.fr/ 
 
    -   
 
    - A Brief Comparison of Email Encryption Protocols
 
    - http://www.arraydev.com/commerce/JIBC/9603-2.htm 
 
    -   
 
    - Carl Ellison
 
    - 
    
- Certification Infrastructure Needs For Electronic Commerce & Personal Use
 
    http://world.std.com/~cme/nist-7-24/  
    - Home Page
 
    http://world.std.com/~cme/  
    - Misuse of the Word Trust 
 
    http://world.std.com/~cme/html/trust.html  
    - SPKI/SDSI & the Web of Trust (PGP vs. X.509 Certificates)
 
    http://world.std.com/~cme/html/web.html  
    - SPKI/SDSI Certificates
 
    http://world.std.com/~cme/html/spki.html  
     
    -   
 
    - Certificate Management & Installation with OpenSSL
 
    - http://tirian.magd.ox.ac.uk/~nick/openssl-certs/index.html 
 
    -   
 
    - CERT - Using PGP to Verify Digital Signatures
 
    - http://www.cert.org/archive/pdf/PGPsigs_paper2.pdf (PDF document) 
 
    -   
 
    - CESG: Secure Messaging & PKI Interoperability
 
    - http://www.cesg.gov.uk/technology/... (PDF document)
 
    -   
 
    - Cisco - Kerberos White Paper
 
    - http://www.cisco.com/warp/public/106/1.html 
 
    -   
 
    - Counterpane
 
    - 
    
- Risks of PKI: Electronic Commerce
 
    http://www.schneier.com/essay-insiderisks5.html   
     Risks of PKI: Secure E-mail 
    http://www.schneier.com/essay-insiderisks4.html 
    Ten Risks of PKI 
    http://www.schneier.com/paper-pki.html  
    or http://www.schneier.com/paper-pki-ft.txt 
    
      
    CREN - Certificate Authority Services
    http://www.cren.net/crenca/ 
      
    Comodo Group
    http://www.comodogroup.com/ 
      
    CyberWatch-911 - How to Check Your Browser's Cipher Strength
    http://www.cyberwatch911.org/reporting/ciphercheck.html 
      
    Dartmouth
    
    PKI Lab 
    http://www.dartmouth.edu/~pkilab/  
    Learning About PKI 
    http://www.dartmouth.edu/~pkilab/pages/Learning_About_PKI.html  
    Using Public Key Certificates 
    http://www.dartmouth.edu/~pkilab/pages/Using_PKI.html  
    Using S/MIME E-mail 
    http://www.dartmouth.edu/~pkilab/pages/Using_SMIME_e-mail.html  
    Using Web Resources with Public Key CErtificates 
    http://www.dartmouth.edu/~pkilab/pages/Using_Web_Resources.html  
    What is PKI 
    http://www.dartmouth.edu/~pkilab/pages/PKI_Background.html  
    
      
    Defective Sign & Encrypt in S/MIME, PKCS#7, MOSS, PEM, PGP, & XML
    http://world.std.com/~dtd/sign_encrypt/sign_encrypt7.html 
      
    Digital Certificates (Jerilyn Waters)
    http://oden.csom.umn.edu/idsc6452/Papers/JWaters/Paper.htm 
      
    Digital Certificates & Encryption
    http://www.enteract.com/~lspitz/digcerts.html 
      
    Digital Certificates: Frequently Asked Questions
    http://www.cyfi.com/cyfi/dcfaq.htm 
      
    Digital Signature Guidelines: A Tutorial
    http://www.abanet.org/scitech/ec/isc/dsg-tutorial.html 
      
    Digital Signature Law Survey
    http://rechten.kub.nl/simone/ds-lawsu.htm 
      
    Digital Trust - Windows Mail with X.509
    http://www.geocities.com/tnotary/stx509.html 
      
    Dr S N Henson's Home Page
    http://www.drh-consultancy.demon.co.uk/ 
      
    Electronic Signatures & Internet Security: An Explanation & Practical How-To Notes
    http://www.tim-richardson.net/misc/security.html 
      
    Encrypting with Stunnel: How to Encrypt Arbitrary TCP connections Inside SSL 
    http://www-106.ibm.com/developerworks/security/library/s-stun.html 
      
    Encryption, Authentication & Public Key Infrastructure
    http://www2.rowan.edu/business/... 
      
    Entrust
    
    Home Page 
    http://www.entrust.com/ 
    Documentation 
    http://www.entrust.com/resources/whitepapers.htm 
    Internet Security 101 
    http://www.entrust.com/security101/index.htm 
    An Introduction to Cryptography & Digital Signatures 
    http://www.entrust.com/resources/descriptions/1.htm 
    Resources 
    http://www.entrust.com/resources/ 
    Trust Management in the Public-Key Infrastructure 
    http://www.entrust.com/resources/descriptions/63.htm 
    Understanding Digital Certificates & Secure Sockets Layer (SSL) 
    http://www.entrust.com/resources/descriptions/189.htm 
    
      
    Fabian Rodriquez - Thawte X.509 Certificates/OpenPGP Encryption
    http://www.fabianrodriguez.com/encryption/ 
      
    Federal PKI Policy Authority
    http://www.cio.gov/fpkipa/ (PDF document)
      
    Finance Outlook - Digital Signatures, Digital Certificates, & PKI
    http://www.financeoutlook.com/pki.htm 
      
    Fortify.net
    
    Fortify for Netscape ReadMe 
    http://www.fortify.net/README_main.html 
    SSL Check 
    https://www.fortify.net/sslcheck.html 
    
      
    Fraudulent Versign Certificate
    http://www.microsoft.com/technet/security/... 
    & http://securityresponse.symantec.com/... 
    & http://securityresponse.symantec.com/... 
    & http://www.sans.org/rr/paper.php?id=679 (PDF document) 
    & http://www.verisign.com/developer/... 
      
    The Free Cert Project
    http://www.freecert.org/     
      
    GeoTrust
    http://www.geotrust.com/index_default.htm 
      
    GlobalSign
    
    About Digital Certificates 
    http://support.globalsign.net/en/...
    About Digital Signatures 
    http://support.globalsign.net/en/...
    Home Page 
    http://www.globalsign.net/ 
    
      
    Global Trust Register
    http://www.cl.cam.ac.uk/Research/Security/Trust-Register/index-1998.html 
      
    IETF
    
    Kerberized Internet Negotiation of Keys (kink) Working Group 
    http://www.ietf.org/html.charters/kink-charter.html 
    Kerberos WG (krb-wg) Working Group 
    http://www.ietf.org/html.charters/krb-wg-charter.html 
    Public-Key Infrastructure (X.509) (pkix) Working Group 
    http://www.ietf.org/html.charters/pkix-charter.html  
    or http://www.imc.org/ietf-pkix/index.html 
    S-MIME Mail Security (smime) Working Group 
    http://www.ietf.org/html.charters/smime-charter.html 
    Transport Layer Security (tls) Working Group 
    http://www.ietf.org/html.charters/tls-charter.html 
    XML Digital Signatures (xmldsig) Working Group 
    http://www.ietf.org/html.charters/xmldsig-charter.html 
    
      
    Information Security Magazine - PKI Policy Pitfalls
    http://www.infosecuritymag.com/articles/july01/features_pki.shtml 
      
    Intelligent Enterprise Magazine
    
    The Burden of Proof 
    http://www.intelligententerprise.com/...
    The Weakest Links 
    http://www.intelligententerprise.com/...
    
      
    Internet2 HEPKI-TAG
    http://middleware.internet2.edu/hepki-tag/ 
      
    Internet2 HEPKI-TAG PKI Development Website
    https://pkidev.internet2.edu/ 
      
    Internet2 PKI Labs
    http://middleware.internet2.edu/pkilabs/ 
      
    Internet Mail Consortium - S/MIME & OpenPGP
    http://www.imc.org/smime-pgpmime.html 
      
    Introducing SSL and Certificates
    http://www.pseudonym.org/ssl/ssl_intro.html 
    http://www.pseudonym.org/ssl/old/ssl_intro.html (old) 
      
    Introducing SSL and Certificates Using SSLeay
    http://home.earthlink.net/~fjhirsch/Papers/wwwj/article.html 
    http://www.linuxsecurity.com/resource_files/... 
      
    ITU-T Publications - X.509
    http://www.itu.int/rec/recommendation.asp?... 
      
    ITU-T Recommendation - X.509 (08-1997)
    http://www.itu.int/ITU-T/asn1/database/itu-t/x/x509/1997/ 
      
    KPMG - Public Key Infrastructure Services
    http://www.kpmg.com/Rut2000_prod/... (PDF document)
      
    MCG
    
    Overview of Certification Systems   
    http://www.mcg.org.br/cert.htm  
    or http://www.mcg.org.br/certover.pdf (PDF document)
    Publications   
    http://mcg.org.br/papers.htm 
    X.509 Certificates: A Readable Unabridged Inside View   
    http://www.mcg.org.br/x509cert.htm 
    
      
    Microsoft
    
    Authenticode for Internet Explorer 4.0 
    http://msdn.microsoft.com/downloads/...
    Authenticode for Internet Explorer 5.0 
    http://msdn.microsoft.com/downloads/...
    Certificate Autoenrollment in Windows XP 
    http://www.microsoft.com/windowsxp/...
    Certificates Overview 
    http://www.microsoft.com/technet/prodtechnol/...
     Cipher Strength Appears as 0-Bit in Internet Explorer 
    http://support.microsoft.com/default.aspx?scid=KB;en-us;q261328 
    Creating, Viewing, & Managing Certificates 
    http://msdn.microsoft.com/library/en-us/security/...
    Cryptographic Service Provider Developer's Kit 
    http://msdn.microsoft.com/downloads/sample.asp?...
     Cryptography Tools 
    http://msdn.microsoft.com/library/en-us/security/...
    Cryptography & PKI Basics 
    http://www.microsoft.com/windows2000/techinfo/... 
    or http://www.microsoft.com/technet/prodtechnol/...
    Description of Digital Certificates 
    http://support.microsoft.com/default.aspx?scid=kb;en-us;Q195724 
    How To Secure XML Web Services with SSL 
    http://support.microsoft.com/view/tn.asp?kb=307267 
    Internet Explorer 4 Resource Guide - Digital Certificates 
    http://www.microsoft.com/technet/archive/ie/...
    Internet Explorer 5 Resource Guide - Digital Certificates 
    http://www.microsoft.com/technet/prodtechnol/... 
    or http://www.microsoft.com/technet/prodtechnol/...
    Internet Explorer 6 Resource Guide - Digital Certificates 
    http://www.microsoft.com/technet/prodtechnol/ie/...
    An Introduction to the Windows 2000 Public Key Infrastructure 
    http://www.microsoft.com/windows2000/techinfo/...
    PKI Enhancements in Windows XP Professional & Windows .NET Server 
    http://www.microsoft.com/windowsxp/pro/..
    PKI Enhancements in Windows XP Professional & Windows .NET Server 
    http://www.microsoft.com/windowsxp/pro/...
    Secure Your Messages on the Internet 
    http://office.microsoft.com/assistance/9798/Olsecmai.aspx 
    Security with Certificates 
    http://www.microsoft.com/technet/prodtechnol/...
    Step-by-Step Guide to Advanced Certificate Management 
    http://www.microsoft.com/technet/prodtechnol/...
    Step-by-Step Guide to End User Certificate Management 
    http://www.microsoft.com/technet/prodtechnol/...
    Step-by-Step Guide to Public Key-Based Client Authentication in Internet Explorer 
    http://www.microsoft.com/windows2000/techinfo/...
    Step-by-Step Guide to Public Key Features in Outlook Express 5.0 & above 
    http://www.microsoft.com/windows2000/techinfo/...
    Step-by-Step Guide to Public Key Features of Outlook 2000 
    http://www.microsoft.com/windows2000/techinfo/...
    Understanding Certificates 
    http://www.microsoft.com/technet/prodtechnol/...
    Using Digital Certificates in Internet Explorer 
    http://www.microsoft.com/windows/ie/using/howto/...
    Windows 2000 Certificate Services 
    http://www.microsoft.com/windows2000/techinfo/...
    Windows 2000 Public Key Infrastructure 
    http://www.microsoft.com/windows2000/techinfo/...
    Windows 2000 Server Resource Kit - Certificate Services & Public Key Infrastructure 
    http://www.microsoft.com/technet/prodtechnol/...
    Windows 2000 Server Resource Kit - Choosing Security Solutions That Use Public Key Technology 
    http://www.microsoft.com/technet/prodtechnol/...
    Windows 2000 Server Resource Kit - Cryptography for Network & Information Security 
    http://www.microsoft.com/technet/prodtechnol/...
    
      
    Microsoft - Kerberos, Authentication & Access Control
    CLICK HERE 
      
    Mind Products - Digital Certificates
    http://mindprod.com/certificate.html 
      
    Mozilla.org - Network Security Services (NSS)
    http://www.mozilla.org/projects/security/pki/nss/ 
      
    NetCraft
    
    An Example Certificate 
    http://www.netcraft.co.uk/ssl/certnote.html 
    SSL Server Glossary 
    http://www.netcraft.co.uk/ssl/glossary.html  
    What Is This SSL Site Running? 
    http://www.netcraft.com/sslwhats/ 
    
      
    Net@EDU PKI Working Group
    http://www.educause.edu/netatedu/groups/pki/ 
      
    Netscape
    
    Applying Communicator's Security Features 
    http://developer.netscape.com/docs/...
    Certificate Authority Services 
    https://certs.netscape.com/client.html 
    Certificate Specifications 
    http://wp.netscape.com/eng/security/...
    Enterprise Security (PKI) 
    http://verisign.netscape.com/security/...
    Implementing PKI 
    http://verisign.netscape.com/security/pki/...l 
    Introduction to SSL 
    http://developer.netscape.com/docs/manuals/...
    Object Signing Resources 
    http://developer.netscape.com/software/...
    Object Signing Tools 
    http://developer.netscape.com/software/...
    Personal Certificates/font>  
    http://wp.netscape.com/security/techbriefs/...
    Secure Sockets Layer (SSL) 
    http://wp.netscape.com/security/...
    Security Center 
    http://wp.netscape.com/security/index.html 
    Signing Your Cokde 
    http://verisign.netscape.com/security/...
    Tech Briefs 
    http://wp.netscape.com/security/...
    The SSL Protocol Version 3.0  
    http://wp.netscape.com/eng/ssl3/...
    Understanding PKI 
    http://verisign.netscape.com/security/...
    Understanding Security & Privacy 
    http://wp.netscape.com/security/...
    
      
    Network Computing - Certificate Revocation: When Not To Trust
    http://www.networkcomputing.com/1112/1112ws1.html 
      
    Network Computing - Tracking Digital Certificates
    http://www.nwc.com/1116/1116colmoskowitz.html 
      
    Network Computing - What's 'E' About Signatures?
    http://www.nwc.com/1118/1118colmoskowitz.html 
      
    Network Magazine
    
    Email Security 
    http://www.networkmagazine.com/article/...
    SSL & S-HTTP  
    http://www.networkmagazine.com/article/...
    
      
    NHSE - X.509 Certificates & Certification Authorities
    http://www.cs.utk.edu/~browne/nhse-legal/node12.html 
      
    NIST
    
    Federal Agency Use of Public Key Technology for Digital Signatures & Authentication 
    http://csrc.nist.gov/publications/nistpubs/... 
    or http://csrc.nist.gov/publications/nistpubs/... (PDF document) 
    Guidelines On Electronic Mail Security 
    http://csrc.nist.gov/publications/nistpubs/ ...  
      or http://csrc.nist.gov/publications/nistpubs/... (PDF document) 
    Introduction to Public Key Technology & the Federal PKI Infrastructure 
    http://csrc.nist.gov/publications/nistpubs/... 
      or http://csrc.nist.gov/publications/nistpubs/... (PDF document) 
    PKI Program 
    http://csrc.nist.gov/pki/ 
    PKI Related Links 
    http://csrc.nist.gov/pki/twg/links.htm 
    PKI Slide Show 
    http://csrc.nist.gov/nissc/1999/program/isso/sld001.htm 
    S-MIME Activities 
    http://csrc.nist.gov/pki/smime/welcome.htm 
    
      
    NSA - Guide to the Secure Configuration & Administration of Microsoft Windows 2000 Certificate Services 
    http://www.nsa.gov/snac/win2k/download.htm 
    or http://www.nsa.gov/snac/win2k/guides/w2k-12.pdf (direct download)
      
    NSA - Guide to Using DoD PKI Certificates in Outlook 2000
    http://www.nsa.gov/snac/win2k/download.htm 
    or http://www.nsa.gov/snac/win2k/guides/w2k-15.pdf (direct download)
      
    NWFusion - The ABCs of PKI
    http://www.nwfusion.com/research/2000/0117feat.html 
      
    OpenCA PKI Development Project
    http://www.openca.org/openca/ 
      
    The Open-source PKI Book
    http://ospkibook.sourceforge.net/ 
      
    OpenSSL
    http://www.openssl.org/ 
    or http://openssl.planetmirror.com/ 
      
    Peter Gutmann
    
    Authenticode 
    http://www.cs.auckland.ac.nz/~pgut001/pubs/authenticode.txt 
    Secure Internet-Based Electronic Commerce: The View from Outside the United States 
    http://www.cs.auckland.ac.nz/~pgut001/pubs/icommerce.pdf 
    X.509 Style Guide 
    http://www.cs.auckland.ac.nz/~pgut001/pubs/x509guide.txt 
    
      
    Phrack Inc: "Haaaang on snoopy, snoopy hang on (SSL for fun & profit)"
    http://www.phrack.org/show.php?p=57&a=13 
      
    PKI Forum
    http://www.pkiforum.org/ 
      
    PKI: An Insider's View
    http://www.infosecuritymag.com/articles/october01/columns_logoff.shtml 
      
    The PKI Challenge
    https://www.eema.org/pki-challenge/index.asp 
      
    PKI Law
    http://www.pkilaw.com/ 
      
    PKI Law - 25 Steps to the Successful Implementation of a Corporate Public Key Infrastructure 
    http://www.pkilaw.com/25step.htm 
      
    The PKI Page
    http://www.pki-page.org/ 
      
    Public Key Infrastructure Project
    http://www.dstc.qut.edu.au/MSU/projects/pki/ 
      
    Recognition of Your SSL Certificate
    http://www.sslreview.com/content/recognition.html 
      
    Ridge Cook - Encryption & PKI
    http://groups.yahoo.com/group/PracticalEncryption/... 
      
    RSA Security
    
    Home Page 
    http://www.rsasecurity.com/ 
    Planet SSL 
    http://www.rsasecurity.com/standards/ssl/index.html 
    Public Key Cryptography Standards (PKCS) 
    http://www.rsasecurity.com/rsalabs/pkcs/index.html 
    RSA Labs CryptoBytes 
    http://www.rsasecurity.com/rsalabs/cryptobytes/index.html 
    RSA Labs Cryptography FAQ 
    http://www.rsasecurity.com/rsalabs/faq/ 
    S/MIME Central 
    http://www.rsasecurity.com/standards/smime/ 
    S/MIME FAQ 
    http://www.rsasecurity.com/standards/smime/faq.html 
    SSL Basics for Internet Users 
    http://www.rsasecurity.com/standards/ssl/basics.html 
    White Papers 
    http://www.rsasecurity.com/solutions/...
    
      
    SANS Institute - Digital Certificates
    http://www.sans.org/rr/catindex.php?cat_id=13/ 
      
    SANS Institute - Encryption & VPNs   
    http://www.sans.org/rr/catindex.php?cat_id=20 
      
    SDSI-SPKI Resources
    http://www.syntelos.org/spki/ 
      
    Securing IT Resources with Digital Certificates & LDAP
    http://www.educause.edu/ir/library/html/cnc9707/cnc9707.html 
      
    Securing Windows 2000 Certificate Services
    http://www.systemexperts.com/win2k/CertSrv/W2KCert10.pdf (PDF document)
      
    SecurityFocus.com - Remote Desktop Management Solution for Microsoft 
    http://www.securityfocus.com/infocus/1677 
      
    Server Certificate Registration
    http://www.geotrust.com/certificateregistration/ 
      
    Slackers - Digital Certificates
    http://www.massconfusion.com/crypto/Lecture/product1.shtml 
      
    S/MIME & PGP Products Interoperability
    http://www.arraydev.com/commerce/JIBC/9603-2.htm 
      
    S/MIME - the Reality of Interoperability
    http://www.net-security.org/article.php?id=286 
      
    Spyrus 
    http://www.spyrus.com/ 
      
    SSL Certificates HOWTO
    http://www.tldp.org/HOWTO/SSL-Certificates-HOWTO/index.html 
      
    SSLeay Certificate Cookbook
    http://www.pseudonym.org/ssl/ssl_cook.html 
    http://www.pseudonym.org/ssl/old/ssl_cook.html (old) 
      
    SSLeay & SSLapps FAQ
    http://psych.psy.uq.oz.au/~ftp/Crypto/ 
      
    SSL Project
    http://ntrg.cs.tcd.ie/mepeirce/Dce/99/ssl/home.htm 
      
    SSLreview
    http://www.sslreview.com/ 
      
    SSL-Talk List FAQ
    http://www.faqs.org/faqs/computer-security/ssl-talk-faq/ 
    or http://www.cs.uu.nl/wais/html/na-dir/computer-security/ssl-talk-faq.html 
      
    Sun - Public Key Infrastructure Overview
    http://www.sun.com/blueprints/0801/publickey.pdf (PDF doc)
      
    Thawte
    
    Cryptography FAQs 
    http://www.thawte.com/html/...
    Full Strength Crypto: SGC SuperCerts 
    http://www.thawte.com/html/...
    Home Page 
    http://www.thawte.com/ 
    Personal Certification Home 
    https://www.thawte.com/cgi/personal/contents.exe 
    Personal Email Certificates 
    http://www.thawte.com/html/...
    Personal Certificate FAQ's 
    http://www.thawte.com/html/C...
    Repository 
    http://www.thawte.com/repository/index.html 
     Root Certificates 
    http://www.thawte.com/html/S...
     Root Certificate Trust Mappings 
    http://www.thawte.com/html/SUPPORT/... 
    or http://www.thawte.com/html/... 
    or http://www.thawte.com/html/...
    Root & CRL Database 
    https://www.thawte.com/cgi/lifecycle/roots.exe 
    Support Centre 
    http://www.thawte.com/html/...
    
      
    TrustToolbar Secure Email Certificates (Comodo Group)
    http://www.trusttoolbar.com/products/EmailCerts/index.html 
      
    UC Berkeley
    
    About Web Browser Security 
    http://wssg.berkeley.edu/public/projects/...
    Email Privacy, Integrity, & Authenticity 
    http://wssg.berkeley.edu/public/projects/...
    Server Certificates & SSL: What, Why, and Issues 
    http://wssg.berkeley.edu/public/projects/...
    Web Browser Security 
    http://wssg.berkeley.edu/public/projects/...
    
      
    UC San Diego
    
    Converting Certificates 
    http://security.sdsc.edu/help/pki/convert.shtml 
    Kerberos Help & Information 
    http://security.sdsc.edu/help/kerberos.shtml 
    PKI/GSI: NPACI's Public Key Infrastructure/Grid Security Infrastructure 
    http://www.npaci.edu/online/v4.5/pki-gsi.html 
    What is PKI? 
    http://security.sdsc.edu/help/pki/description.shtml 
      
    The University of Wisconsin (Madison) - PKI Lab
    http://www.cs.wisc.edu/pkilab/ 
      
    The University of Wisconsin (Madison) - Using X.509 Certificates for Authentication 
    http://www.cs.wisc.edu/condor/manual/v6.1/3_9Using_X_509.html 
      
    Verisign
    
    About Digital IDs 
    https://digitalid.verisign.com/client/help/aboutdid.htm 
    Browser Check 
    http://verisign.netscape.com/advisor/index.html 
    Digital IDs: The New Advantage 
    http://www.verisign.com/clientauth/whitepaper.html 
    Home Page 
    http://www.verisign.com/ 
    Implementing Web Site Client Authentication Using Digital IDs 
    http://www.verisign.com/clientauth/kit/details.html 
    Introduction to Cryptography 
    https://digitalid.verisign.com/client/help/introCrypto.htm  
    or http://www.verisign.com/repository/crptintr.html 
    Introduction to Client Digital IDs 
    http://www.verisign.com/repository/brwidint.html 
    Public-Key Infrastructure (PKI)  
    http://www.verisign.com/whitepaper/...
    Repository 
    http://www.verisign.com/repository/index.html 
    
      
    Wild ID - Totally Free Digital ID
    http://www.wildid.com/ 
      
    X.509 Certificates   (Dr. Dobb's Journal)
    http://www.ddj.com/documents/s=901/ddj9907c/9907c.htm 
      
    X.509 Certificates & Certificate Revocation Lists (CRLs)
    http://java.sun.com/j2se/1.3/docs/guide/security/cert3.html 
    or http://java.sun.com/products/jdk/1.2/docs/guide/security/cert3.html 
    or http://techref.infm.ulst.ac.uk/java2/docs/guide/security/cert3.html 
      
    ZDNet
    
    Digital Signatures a Security Threat? 
    http://zdnet.com.com/2100-11-524184.html?legacy=zdnn 
    Digital Signatures A Threat To Privacy? 
    http://zdnet.com.com/2100-11-519795.html?legacy=zdnn 
    E-Signatures: Signed, Sealed, Delivered 
    http://zdnet.com.com/2100-11-524224.html?legacy=zdnn 
    Lingering Questions On E-Sign Security 
    http://zdnet.com.com/2100-11-524214.html?legacy=zdnn 
    
      
    Zero-Knowledge - Private Credentials
    http://www.zks.net/media/credsnew.pdf (PDF document)
  
 
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