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                           <rdf:li><rdf:Description xmpDM:name="Distribution of Public Keys Public announcement: Forgery possible Publicly available directory: Message can be tampered with." xmpDM:startTime="0" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Public-key authority: users know public key for the directory I want to talk B." xmpDM:startTime="0" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Time is T1 Request || T1 Here is the certified public key for B E(PRauth, [PUB || Request || T1])" xmpDM:startTime="0" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi, I am A." xmpDM:startTime="0" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="My nonce is N1." xmpDM:startTime="0" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="E(PUB, [IDA || N1]) Requires real-time access to directory when keys are needed A Authority B Time is T2." xmpDM:startTime="0" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="What’s A’s public key? 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xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="PKI, PKIX, and X.509" xmpDM:startTime="563933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="PKI: Infrastructure to find public keys S/MIME, PGP, SSL use asymmetric cryptography and make use of PKI Certificate authorities Standards" xmpDM:startTime="563933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="for certificates X.509:" xmpDM:startTime="563933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ISO standard for Certificate formats PKIX is the IETF group on PKI PKIX adopted X.509" xmpDM:startTime="563933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="and a subset of its options PKIX is a &quot;Profile&quot; of X.509" xmpDM:startTime="563933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TLS, IPSec, SSH, HTTPS, Smartcard, EAP, CableLabs, use X.509" xmpDM:startTime="563933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ref: http://en.wikipedia.org/wiki/Public_key_infrastructure," xmpDM:startTime="563933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="http://en.wikipedia.org/wiki/IETF_PKIX_Working_Group," xmpDM:startTime="563933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="http://en.wikipedia.org/wiki/X.509" xmpDM:startTime="563933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="563933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Root Certificates Ref: http://en.wikipedia.org/wiki/Root_certificate" xmpDM:startTime="973233" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="http://en.wikipedia.org/wiki/Self-signed_certificate" xmpDM:startTime="973233" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="973233" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description 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CAs in hierarchy Ch14." xmpDM:startTime="1465733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="X.509" xmpDM:startTime="1465733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="CA Hierarchy.pdf" xmpDM:startTime="1465733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="002F6F4DMacintosh HD B83AE914:" xmpDM:startTime="1465733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="X.509" xmpDM:startTime="1468100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Certificates Issued by a Certification Authority (CA), containing: Version V (1, 2, or 3) Serial number SN (unique within CA)" xmpDM:startTime="1468100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="identifying certificate Signature algorithm identifier AI Issuer X.500" xmpDM:startTime="1468100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="name CA) Period of validity TA (from - to dates) Subject X.500" xmpDM:startTime="1468100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="name A (name of owner) Subject public-key info Ap (algorithm, parameters, key) Issuer unique identifier (v2+) Subject unique identifier (v2+)" xmpDM:startTime="1468100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Extension fields (v3) Signature (of hash of all fields in certificate) Notation CA&lt;&lt;A&gt;&gt; denotes certificate for A signed by CA" xmpDM:startTime="1468100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="1468100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="CA Hierarchy CA's must form a hierarchy Each CA has certificates for clients (forward) and parent (backward) Each client trusts" xmpDM:startTime="1517533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="parents certificates Enable verification of any certificate from one CA by users of all other CAs in hierarchy Ch14." xmpDM:startTime="1517533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="X.509" xmpDM:startTime="1517533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="CA Hierarchy.pdf" xmpDM:startTime="1517533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="002F6F4DMacintosh HD B83AE914:" xmpDM:startTime="1517533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="X.509" xmpDM:startTime="1614600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Version 3 Additional information is needed in a certificate Email/URL, Policy details, Usage constraints Rather than explicitly naming new fields" xmpDM:startTime="1614600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="defined a general extension method Extensions consist of: Extension identifier Criticality indicator Extension value" xmpDM:startTime="1614600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="X.509" xmpDM:startTime="1716800" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Extensions Authority Key Identifier: Serial # of CA's key Subject Key Identifier: Uniquely identifies the subjects key." xmpDM:startTime="1716800" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Serial # or hash." xmpDM:startTime="1716800" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Key Usage: Allowed usage - email, business, ..." xmpDM:startTime="1716800" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Private Key Usage Period: Timestamps for when key can be used (similar to validity) Certificate Policies Policy Mappings: from Issuer's" xmpDM:startTime="1716800" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="domain to subject's domain Subject Alt Name: Alternative name." xmpDM:startTime="1716800" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="DNS." xmpDM:startTime="1716800" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Subject Directory Attributes: Other attributes" xmpDM:startTime="1716800" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Certificate Revocation May need to revoke before expiry, for example, User's private key is compromised User is no longer certified" xmpDM:startTime="1894067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="by this CA CA's certificate is compromised CA’s maintain list of revoked certificates Certificate Revocation List (CRL) Users should check" xmpDM:startTime="1894067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="certificates with CA’s CRL Too much traffic on the net  Not used On-Line Revocation Server (OLRS): On-line Certificate Status" xmpDM:startTime="1894067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Protocol (OCSP) [RFC 2560] Provides current information Also allows chaining of OCSP responders Ref: http://en.wikipedia.org/wiki/Revocation_list," xmpDM:startTime="1894067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="http://en.wikipedia.org/wiki/Online_Certificate_Status_Protocol," xmpDM:startTime="1894067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="http://en.wikipedia.org/wiki/OCSP_stapling" xmpDM:startTime="1894067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="1894067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Untrusted Certificates" xmpDM:startTime="2241300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Certificate Revocation May need to revoke before expiry, for example, User's private key is compromised User is no longer certified" xmpDM:startTime="2242967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="by this CA CA's certificate is compromised CA’s maintain list of revoked certificates Certificate Revocation List (CRL) Users should check" xmpDM:startTime="2242967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="certificates with CA’s CRL Too much traffic on the net  Not used On-Line Revocation Server (OLRS): On-line Certificate Status" xmpDM:startTime="2242967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Protocol (OCSP) [RFC 2560] Provides current information Also allows chaining of OCSP responders Ref: http://en.wikipedia.org/wiki/Revocation_list," xmpDM:startTime="2242967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="http://en.wikipedia.org/wiki/Online_Certificate_Status_Protocol," xmpDM:startTime="2242967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="http://en.wikipedia.org/wiki/OCSP_stapling" xmpDM:startTime="2242967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2242967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Untrusted Certificates" xmpDM:startTime="2262733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Summary Master keys are used to exchange session keys." xmpDM:startTime="2377100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Session keys are used for a short duration and then discarded." xmpDM:startTime="2377100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Secret keys are distributed via a KDC or via public keys Public keys are distributed via X.509" xmpDM:startTime="2377100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="based PKI." xmpDM:startTime="2377100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Browsers have a built-in list of root CAs PKIX is a profile of the X.509" xmpDM:startTime="2377100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="PKI standard X.509" xmpDM:startTime="2377100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="uses X.500" xmpDM:startTime="2377100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="names." xmpDM:startTime="2377100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="DNS names in Alternate Name field." xmpDM:startTime="2377100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Certificate Revocation Lists (CRLs) are used to revoke a certificate." xmpDM:startTime="2377100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="On-line certification Status Protocol (OCSP) can be used to check revocation" xmpDM:startTime="2377100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Homework 14 Study the root certificates in your Internet Explorer In Internet Explorer, click Tools, then click Internet Options Click" xmpDM:startTime="2538300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="the Content tab." xmpDM:startTime="2538300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Under Certificates, click Certificates." xmpDM:startTime="2538300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="To view details of any certificate, select the certificate and click View." xmpDM:startTime="2538300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Find the certificate for “Thawte Premium Server CA” What is the X.500" xmpDM:startTime="2538300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="name of the CA? What version of X.509" xmpDM:startTime="2538300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="does this CA use? What are the uses of the public key in this certificate? What signature algorithm is used" xmpDM:startTime="2538300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="to sign this certificate? What are the last 4 bytes of the public key" xmpDM:startTime="2538300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Lab 14 You will receive a “signed” email from the TA." xmpDM:startTime="2641100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Reply to this email with a “encrypted and signed” email to TA." xmpDM:startTime="2641100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hints: To sign your email with a private key you need your digital certificate." xmpDM:startTime="2641100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="To send an encrypted email you need TA’s public key." xmpDM:startTime="2641100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TA’s public key is attached with his email." xmpDM:startTime="2641100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="The steps to obtain a free certificate and use it for email depend upon your email software." xmpDM:startTime="2641100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Instructions for Outlook and Gmail are as included next." xmpDM:startTime="2641100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2641100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Lab 14 Hints (Cont) Getting your Certificate: Use Internet Explorer to request and collect a free email certificate from: http://www.comodo.com/home/email-security/free-email-certificate.php" xmpDM:startTime="2773967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="After you have collected the certificate, in Internet Explorer go to Tools  Internet Options  Contents  Certificates " xmpDM:startTime="2773967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Personal Select your certificate and export it to a file." xmpDM:startTime="2773967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Select “Yes – Export the private key” click next Select “Include all certificates in the certification path” Select “Enable strong" xmpDM:startTime="2773967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="protection” Do not select “Delete the private key if the export is successful” Save it with a password of your" xmpDM:startTime="2773967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="choice." xmpDM:startTime="2773967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Import this certificate in Outlook as follows: Tools  Options  Security  Import/Export Browse to your certificate file and" xmpDM:startTime="2773967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="add it." xmpDM:startTime="2773967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2773967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Lab 14 Hints (Cont) If you use Firefox, use the following procedure to request and collect a free email certificate" xmpDM:startTime="2827000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="from: http://www.comodo.com/home/email-security/free-email-certificate.php" xmpDM:startTime="2827000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="After you have collected the certificate, in Firefox go to Tools  Options  Advanced  Encryption  View Certificates" xmpDM:startTime="2827000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name=" Your Certificates Select your certificate and backup to a file." xmpDM:startTime="2827000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Save it with a password of your choice." xmpDM:startTime="2827000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Import this certificate in Outlook as follows: Tools  Options  Security  Import/Export Browse to your certificate file and" xmpDM:startTime="2827000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="add it." xmpDM:startTime="2827000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Note: You have to use the same browser to collect the certificate from Comodo that you used to request the" xmpDM:startTime="2827000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="certificate." xmpDM:startTime="2827000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Safari: See http://support.apple.com/kb/TA22353" xmpDM:startTime="2827000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2827000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Lab 14 Hints (Cont) Importing Other’s Certificates in Outlook: In Outlook, open the signed message received from TA." xmpDM:startTime="2828633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="In the message window, right click on the name in the “From field” and select &quot;save as outlook contact“ This" xmpDM:startTime="2828633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="will open a new contact window." xmpDM:startTime="2828633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="In that window, click on the &quot;certificates&quot; tab." xmpDM:startTime="2828633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="You will see the certificate listed there." xmpDM:startTime="2828633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Save this contact in your contacts list." xmpDM:startTime="2828633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="When you reply or send email to this contact, you can enable the security options for encryption and signatures by:" xmpDM:startTime="2828633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="View  Options  Security Options Select Encrypt Message or Add Digital Signature or both Select Security Settings: &lt;Automatic&gt;" xmpDM:startTime="2828633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Lab 14 Hints (Cont) Gmail Instructions: The certificate will show up as an attachment name smime.p7s" xmpDM:startTime="2831500" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Download and save this attachment on your computer." xmpDM:startTime="2831500" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Transfer this file to the computer where you have an outlook email." xmpDM:startTime="2831500" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Manually create a new contact entry in outlook with proper name and email address." xmpDM:startTime="2831500" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Open this contact entry." xmpDM:startTime="2831500" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Go to certificate panel and import." xmpDM:startTime="2831500" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Select all files *.*" xmpDM:startTime="2831500" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="and select the file smime.p7s" xmpDM:startTime="2831500" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Save and close the entry." xmpDM:startTime="2831500" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="To send an email with your Gmail address in the from field, you will need to create a new email" xmpDM:startTime="2831500" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="account in Outlook with the corresponding Gmail address in the from field." xmpDM:startTime="2831500" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Outlook allows email security." xmpDM:startTime="2831500" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Gmail does not." xmpDM:startTime="2831500" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2831500" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Lab 14 Hints (Cont) Sending Encrypted and Signed Messages w Outlook: You can reply to the TA’s email with a" xmpDM:startTime="2833200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="signed encrypted message." xmpDM:startTime="2833200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Content of the reply is not important." xmpDM:startTime="2833200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Before sending the message, on the message window, Select View  Options  Security Settings Select encryption and signature Now" xmpDM:startTime="2833200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="send the message." xmpDM:startTime="2833200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2833200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Lab 14 Hints (Cont) Thunderbird: To import your certificate into Thunderbird: Tools  Options  Advanced  Certificates  View" xmpDM:startTime="2835867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Certificates  Your Certificates  Import Then navigate to where you saved the certificate and select it." xmpDM:startTime="2835867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Enter the password you encrypted the certificate with." xmpDM:startTime="2835867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Now go to Tools  Account Settings  Security Under &quot;Digital Signing&quot;, click select to choose the certificate you just" xmpDM:startTime="2835867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="imported." xmpDM:startTime="2835867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Click &quot;Yes&quot; to automatically use the same certificate for encryption/decryption." xmpDM:startTime="2835867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Thunderbird keeps track of other people's certificates automatically." xmpDM:startTime="2835867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="&quot;Add to address book&quot; step is not necessary for Thunderbird." xmpDM:startTime="2835867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="To send a message: After opening a new message, go to Options  Encrypt this Message and Options  Digitally" xmpDM:startTime="2835867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Sign this message, as desired." xmpDM:startTime="2835867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2835867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Acronyms AI Algorithm Identifier CA Certificate Authority CN Common Name CRL Certificate Revocation List DNS Domain Name System EAP Extensible" xmpDM:startTime="2837133" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Authentication Protocol HTTPS Secure Hypertex Transfer Protocol IA Identifier of A IBM International Business Machines Corporation ID Identifier IDA Identifier" xmpDM:startTime="2837133" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="of A IETF Internet Engineering Task Force IP Internet Protocol IPSec Secure Internet Protocol ISO International Standards Organization KDC Key" xmpDM:startTime="2837133" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Distribution Center" xmpDM:startTime="2837133" xmpDM:duration="1000"/></rdf:li></rdf:Seq>
                     </xmpDM:markers>
                  </rdf:Description>
               </rdf:li>
               <rdf:li>
                  <rdf:Description xmpDM:trackType="TableOfContents" xmpDM:frameRate="f1000" xmpDM:trackName="Table of Contents">
                     <xmpDM:markers>
                        <rdf:Seq>
                           <rdf:li><rdf:Description xmpDM:name="Distribution of Public Keys" xmpDM:startTime="0" tscDM:image="l_14kmd2_Thumbnails.png" tscDM:imageindex="0" tscDM:imageoffset="0" tscDM:imagerect="0, 0, 75, 42"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Public-Key Certificates" xmpDM:startTime="55533" tscDM:image="l_14kmd2_Thumbnails.png" tscDM:imageindex="1" tscDM:imageoffset="0" tscDM:imagerect="75, 0, 75, 42"/></rdf:li><rdf:li><rdf:Description xmpDM:name="PKI, PKIX, and X.509" xmpDM:startTime="563933" tscDM:image="l_14kmd2_Thumbnails.png" tscDM:imageindex="2" tscDM:imageoffset="0" tscDM:imagerect="150, 0, 75, 42"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Root Certificates" xmpDM:startTime="973233" tscDM:image="l_14kmd2_Thumbnails.png" tscDM:imageindex="3" tscDM:imageoffset="0" tscDM:imagerect="225, 0, 75, 42"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Sample X.509 Certificate" xmpDM:startTime="1111533" tscDM:image="l_14kmd2_Thumbnails.png" tscDM:imageindex="4" tscDM:imageoffset="0" tscDM:imagerect="300, 0, 75, 42"/></rdf:li><rdf:li><rdf:Description xmpDM:name="X.509 Sample (Cont)" xmpDM:startTime="1293133" tscDM:image="l_14kmd2_Thumbnails.png" tscDM:imageindex="5" tscDM:imageoffset="0" tscDM:imagerect="375, 0, 75, 42"/></rdf:li><rdf:li><rdf:Description xmpDM:name="X.509 Certificates" xmpDM:startTime="1366300" tscDM:image="l_14kmd2_Thumbnails.png" tscDM:imageindex="6" tscDM:imageoffset="0" tscDM:imagerect="450, 0, 75, 42"/></rdf:li><rdf:li><rdf:Description xmpDM:name="CA Hierarchy " xmpDM:startTime="1465733" tscDM:image="l_14kmd2_Thumbnails.png" tscDM:imageindex="7" tscDM:imageoffset="0" tscDM:imagerect="525, 0, 75, 42"/></rdf:li><rdf:li><rdf:Description xmpDM:name="X.509 Certificates" xmpDM:startTime="1468100" tscDM:image="l_14kmd2_Thumbnails.png" tscDM:imageindex="8" tscDM:imageoffset="0" tscDM:imagerect="600, 0, 75, 42"/></rdf:li><rdf:li><rdf:Description xmpDM:name="CA Hierarchy " xmpDM:startTime="1517533" tscDM:image="l_14kmd2_Thumbnails.png" tscDM:imageindex="9" tscDM:imageoffset="0" tscDM:imagerect="675, 0, 75, 42"/></rdf:li><rdf:li><rdf:Description xmpDM:name="X.509 Version 3" xmpDM:startTime="1614600" tscDM:image="l_14kmd2_Thumbnails.png" tscDM:imageindex="10" tscDM:imageoffset="0" tscDM:imagerect="750, 0, 75, 42"/></rdf:li><rdf:li><rdf:Description xmpDM:name="X.509 Extensions" xmpDM:startTime="1716800" tscDM:image="l_14kmd2_Thumbnails.png" tscDM:imageindex="11" tscDM:imageoffset="0" tscDM:imagerect="825, 0, 75, 42"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Certificate Revocation" xmpDM:startTime="1894067" tscDM:image="l_14kmd2_Thumbnails.png" tscDM:imageindex="12" tscDM:imageoffset="0" tscDM:imagerect="900, 0, 75, 42"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Untrusted Certificates" xmpDM:startTime="2241300" tscDM:image="l_14kmd2_Thumbnails.png" tscDM:imageindex="13" tscDM:imageoffset="0" tscDM:imagerect="975, 0, 75, 42"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Certificate Revocation" xmpDM:startTime="2242967" tscDM:image="l_14kmd2_Thumbnails.png" tscDM:imageindex="14" tscDM:imageoffset="0" tscDM:imagerect="1050, 0, 75, 42"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Untrusted Certificates" xmpDM:startTime="2262733" tscDM:image="l_14kmd2_Thumbnails.png" tscDM:imageindex="15" tscDM:imageoffset="0" tscDM:imagerect="1125, 0, 75, 42"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Summary" xmpDM:startTime="2377100" tscDM:image="l_14kmd2_Thumbnails.png" tscDM:imageindex="16" tscDM:imageoffset="0" tscDM:imagerect="1200, 0, 75, 42"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Homework 14" xmpDM:startTime="2538300" tscDM:image="l_14kmd2_Thumbnails.png" tscDM:imageindex="17" tscDM:imageoffset="0" tscDM:imagerect="1275, 0, 75, 42"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Lab 14" xmpDM:startTime="2641100" tscDM:image="l_14kmd2_Thumbnails.png" tscDM:imageindex="18" tscDM:imageoffset="0" tscDM:imagerect="1350, 0, 75, 42"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Lab 14 Hints (Cont)" xmpDM:startTime="2773967" tscDM:image="l_14kmd2_Thumbnails.png" tscDM:imageindex="19" tscDM:imageoffset="0" tscDM:imagerect="1425, 0, 75, 42"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Lab 14 Hints (Cont)" xmpDM:startTime="2827000" tscDM:image="l_14kmd2_Thumbnails.png" tscDM:imageindex="20" tscDM:imageoffset="0" tscDM:imagerect="1500, 0, 75, 42"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Lab 14 Hints (Cont)" xmpDM:startTime="2828633" tscDM:image="l_14kmd2_Thumbnails.png" tscDM:imageindex="21" tscDM:imageoffset="0" tscDM:imagerect="1575, 0, 75, 42"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Lab 14 Hints (Cont)" xmpDM:startTime="2831500" tscDM:image="l_14kmd2_Thumbnails.png" tscDM:imageindex="22" tscDM:imageoffset="0" tscDM:imagerect="1650, 0, 75, 42"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Lab 14 Hints (Cont)" xmpDM:startTime="2833200" tscDM:image="l_14kmd2_Thumbnails.png" tscDM:imageindex="23" tscDM:imageoffset="0" tscDM:imagerect="1725, 0, 75, 42"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Lab 14 Hints (Cont)" xmpDM:startTime="2835867" tscDM:image="l_14kmd2_Thumbnails.png" tscDM:imageindex="24" tscDM:imageoffset="0" tscDM:imagerect="1800, 0, 75, 42"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Acronyms" xmpDM:startTime="2837133" tscDM:image="l_14kmd2_Thumbnails.png" tscDM:imageindex="25" tscDM:imageoffset="0" tscDM:imagerect="1875, 0, 75, 42"/></rdf:li></rdf:Seq>
                     </xmpDM:markers>
                  </rdf:Description>
               </rdf:li>
            </rdf:Bag>
         </xmpDM:Tracks>
         <tscDM:controller>
            <rdf:Description xmpDM:name="tscplayer">
               <tscDM:parameters>
                  <rdf:Bag>
                     <rdf:li xmpDM:name="autohide" xmpDM:value="true"/><rdf:li xmpDM:name="autoplay" xmpDM:value="false"/><rdf:li xmpDM:name="loop" xmpDM:value="false"/><rdf:li xmpDM:name="searchable" xmpDM:value="true"/><rdf:li xmpDM:name="captionsenabled" xmpDM:value="false"/><rdf:li xmpDM:name="sidebarenabled" xmpDM:value="false"/><rdf:li xmpDM:name="unicodeenabled" xmpDM:value="false"/><rdf:li xmpDM:name="backgroundcolor" xmpDM:value="000000"/><rdf:li xmpDM:name="sidebarlocation" xmpDM:value="left"/><rdf:li xmpDM:name="endaction" xmpDM:value="stop"/><rdf:li xmpDM:name="endactionparam" xmpDM:value="true"/><rdf:li xmpDM:name="locale" xmpDM:value="en-US"/></rdf:Bag>
               </tscDM:parameters>
               <tscDM:controllerText>
                  <rdf:Bag>
                  </rdf:Bag>
               </tscDM:controllerText>
            </rdf:Description>
         </tscDM:controller>
         <tscDM:contentList>
            <rdf:Description>
               <tscDM:files>
                  <rdf:Seq>
                     <rdf:li xmpDM:name="0" xmpDM:value="l_14kmd2.mp4"/><rdf:li xmpDM:name="1" xmpDM:value="l_14kmd2_First_Frame.png"/><rdf:li xmpDM:name="2" xmpDM:value="l_14kmd2_Thumbnails.png"/></rdf:Seq>
               </tscDM:files>
            </rdf:Description>
         </tscDM:contentList>
      </rdf:Description>
   </rdf:RDF>
</x:xmpmeta>