CINXE.COM

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</label> <div class="views-widget"> <div class="form-item form-type-textfield form-item-search-api-views-fulltext"> <input placeholder="Search all of Yale..." type="text" id="edit-search-api-views-fulltext" name="search_api_views_fulltext" value="" size="30" maxlength="128" class="form-text" /> </div> </div> </div> <div class="views-exposed-widget views-submit-button"> <input type="submit" id="edit-submit-sitewide-search" name="edit-submit-sitewide-search" value="Search" class="form-submit" /> </div> </div> </div> </div></form> </div> </div> </header> <div id="highlighted" class="highlighted"> </div> <div id="main" class="main clearfix"> <nav class="breadcrumb"><div class="element-invisible">You are here</div><a href="/">Home</a><div class="breadcrumb__trail" aria-hidden="true">></div> <a href="/policies-procedures">Policies & Procedures</a><div class="breadcrumb__trail" aria-hidden="true">></div> <a href="/university-policies-procedures-forms-and-guides">University Policies, Procedures, Forms, and Guides</a><div class="breadcrumb__trail" aria-hidden="true">></div> 1607 PR.01 Endorsed Encryption Implementation Procedure</nav> <div id="content" class="column main-content" tabindex="-1"> <a id="main-content"></a> <h1 class="page__title title" id="page-title">1607 PR.01 Endorsed Encryption Implementation Procedure</h1> <ul class="action-links"></ul> <div about="/policies-procedures/procedures/1607-pr01-endorsed-encryption-implementation-procedure" typeof="sioc:Item foaf:Document" class="ds-1col node node-26941 node--procedure clearfix node--view-mode-full view-mode-full clearfix"> <div class="field field-label-inline clearfix field--date"><div class="field-label">Revision Date: </div><div class="field-items"><div class="field-item even"><span class="date-display-single" property="dc:date" datatype="xsd:dateTime" content="2019-12-02T00:00:00-05:00">December 2, 2019</span></div></div></div><div class="field field-label-hidden field--body"><div class="field-items"><div class="field-item even" property="content:encoded"><h2>Contents</h2> <p style="margin-left:.25in"><a href="#1">1. Overview</a></p> <p style="margin-left:.25in"><a href="#2">2. Encryption of Data</a></p> <p style="margin-left:.25in"><a href="#3">3. Rationale for Procedures</a></p> <p style="margin-left:.25in"><a href="#4">4. University Encryption Standards</a></p> <p style="margin-left:.25in"><a href="#5">5. SSL/TLS</a></p> <p style="margin-left:.25in"><a href="#6">6. Special Situations/Exceptions for Encryption Methods</a></p> <p style="margin-left:.25in"><a href="#7">7. Revision History</a></p> <div> <h2><a name="1" id="1"></a>1. Overview</h2> </div> <p>These encryption implementation procedures are designed to supplement the Yale University <a href="/policies-procedures/policies/1607-information-technology-appropriate-use-policy">Policy 1607</a> <em>Information Technology Appropriate Use Policy</em> section 1607.2 F, which states:</p> <p style="margin-left:.25in">“Encrypted material. Encrypted files, documents, and messages may be accessed by the University under the above guidelines. See 1607.1 - F, above.”</p> <div> <h2><a name="2" id="2"></a>2. Encryption of Data</h2> </div> <p>Users of Moderate Risk and High Risk data, as defined by Yale <a href="/policies-procedures/policies/1604-data-classification-policy">Policy 1604</a> <em>Data Classification Policy</em>, are required to encrypt files, documents, and messages for protection against inadvertent or unauthorized disclosure while in storage or in transit over data networks, while other users are encourage to use encryption where appropriate. The University makes available software and protocols endorsed by the Information Security Office (“ISO”) that provide robust encryption, as well as the capability for properly designated University officials to decrypt the information, when required and authorized under Policy 1607.</p> <p>Users encrypting information are required to use only the endorsed software and protocols. Users who have encrypted Yale data using methods other than those endorsed by the University are expected to decrypt this data upon request by a university official. (See <a href="/policies-procedures/policies/1607-information-technology-appropriate-use-policy">Policy 1607</a> <em>Information Technology Appropriate Use Policy</em> section 1607.2 Conditions of University Access.) A staff member may only encrypt with the permission of his or her supervisor.</p> <p>These encryption implementation guidelines, including endorsed software and procedures, will be updated as technical solutions and University requirements change.</p> <div> <h2><a name="3" id="3"></a>3. Rationale for Procedures</h2> </div> <p>To support preservation of access to important data, the University has developed recommendations for <em>data recovery</em> (salvaging data stored on damaged media, such as magnetic disks and tapes) of encrypted <em>persistent data</em> (information that endures beyond a single instance of use). Business continuity in the event of a disaster, such as the endangerment of data access (loss of key personnel or passwords) for a University owned computing device is a serious concern, as is the concern that a Yale-owned computing device could use encryption to hide illegal activities.</p> <p>The University has also established minimum standards for encryption to ensure that sensitive data is protected from disclosure, both when ‘in transit’ over computer networks and when stored on computing devices including servers, desktop machines and portable devices such as a PDA. The University is presently not concerned with maintaining a central <em>data recovery</em> decryption capability if it would prevent use of network privacy. Nor is the University planning to require the ability to decrypt traffic in transit over the campus network. The University understands that there are privacy concerns attached to these capabilities, as well as deployment problems.</p> <p>It is also recognized that in the future federal or state law enforcement may ask for the capability to monitor and decode traffic in transit and that circumstances may lead the Yale University Information Security Office (“ISO”) to desire this same capability. However, the University currently believes that our capability to monitor encrypted network traffic at the endpoint(s) from system owners/administrators is the most reliable implementation. These system owners/administrators are required to cooperate with requests for decryption under the conditions specified in Yale University <a href="/policies-procedures/policies/1607-information-technology-appropriate-use-policy">Policy 1607</a> <em>Information Technology Appropriate Use Policy</em>.</p> <p><strong>Information that is directly related to the business of Yale University</strong> (finance & administration, HR, student affairs, legal, primary source clinical and research data) should only be encrypted using a <em>University approved method </em>(e.g., PGP) which provides the ability for Yale to recover the data in the event of an emergency.</p> <div> <h2><a name="4" id="4"></a>4. University Encryption Standards</h2> </div> <p>Only <em>university-endorsed methods</em> for encrypting data (email, files, documents, disks) may be used to encrypt Yale data. Yale is transitioning away from the PGP encryption standard in favor of newer, more integrated and more transparent encryption technologies. The following methods are the only endorsed methods of encryption at this time (e.g. TrueCrypt <em><strong>is not an endorsed encryption method</strong></em> due to weaknesses in the encryption method and issues with managing how this software encrypts devices and stores keys).</p> <p><strong>Microsoft BitLocker </strong>– the service must be configured to:</p> <ul class="rteindent1"> <li>Enabled enrollment through Active Directory group policy.</li> <li>Encrypt data using the BitLocker service native to Windows 7 and later.</li> <li>Escrow keys using Yale’s automated process(es).</li> </ul> <p><strong>Apple FileVault 2</strong> – the service must be configured to:</p> <ul class="rteindent1"> <li>Encrypt data using a key provided by Yale.</li> <li>Encrypt data using the FileVault interface native to Mac OS X 10.7 and later.</li> </ul> <p><strong>Imation IronKey</strong> – the device must be:</p> <ul class="rteindent1"> <li>A device from Imation’s commercial (not consumer) line of products.</li> <li>A model that allows for central management of the device.</li> <li>Properly enrolled in Yale’s IronKey management service by an IT professional.</li> </ul> <p><strong>[Depricated] PGP </strong><em>(</em>Pretty Good Privacy) – data should be:</p> <ul class="rteindent1"> <li>Encrypted using PGP software (version 6.0 or later) using the default CAST cipher (<em>cipher text</em> is unreadable until it has been converted into <em>plain text</em>, decrypted, with a key).</li> <li>Encrypted to the Yale ITS ADK (Additional Decryption Key) associated with the name <a href="mailto:itsiso.adk@yale.edu">itsiso.adk@yale.edu</a>(fingerprint EE59 62A3 2193 6F7E 63D1 ECBC A42D 1AFE CBE3 F022) in addition to the other public keys to which the data is being encrypted. (ADK was added to the PGP software, so that government or other third parties like the University, could have a back door to PGP encrypted data)</li> <li>Encrypted only to public PGP 5/6 (Diffie-Hellman, not RSA) keys which have been stored on the Yale PGP Key servers (the LDAP and secure LDAP – LDAPS – servers) and are “signed” by the Yale ITS Certificate Authority Signing Key (KeyID # 0x102F1F65, fingerprint B876 3F26 CABA F0B5 B3DD 7679 8DF5 44F1 102F 1F65).</li> <li>Both the Yale ITS ADK and Certificate Authority Signing Key public keys are available for download via LDAP and “Secure” LDAP via the Yale PGP Key servers available via the name “PGPKEYS.ITS.YALE.EDU” </li> </ul> <p>PGP software that implements the above policies is downloadable for use by Yale faculty, staff and students who must conduct secure business, research or clinical activity on behalf of the University. For more information see:</p> <div> <h2><a name="5" id="5"></a>5. SSL/TLS</h2> </div> <p>Secure Socket Layer-SSL (version 3) or Transport Layer Security -TLS protocol is recommended for transmission of Yale University data via the World Wide Web on either the local campus network or the Internet: <a href="https://cybersecurity.yale.edu/">https://cybersecurity.yale.edu/</a></p> <div> <h2><a name="6" id="6"></a>6. Special Situations/Exceptions for Encryption Methods</h2> </div> <p>(other than encryption implementations described above)</p> <p>1. Login and access to Yale University owned servers is endorsed for the following secure protocols:</p> <ul class="rteindent1"> <li>TLS</li> <li>SSH 1 & 2</li> <li>Kerberized Telnet (Note: should be used in encryption AND authentication mode).</li> <li>Kerberized POP (Note: does not provide e-mail content nor traffic encryption)</li> <li>IMAP over SSL</li> <li>FTP over SSL</li> <li>SMTP over SSL</li> <li>NetMeeting </li> <li><a href="http://www.symantec.com/">pcAnywhere</a> (versions 8x, 9x & 10.x)</li> <li>NT Terminal Server Client </li> <li><a href="http://www.citrix.com/">Citrix ICA</a></li> </ul> <p>2. <a href="https://your.yale.edu/work-yale/financial-management/university-auditing-quality-assurance">The University Audit department</a> currently has a requirement for independent private encryption of audit information kept on auditor’s hard disks and servers.</p> <p>3. <a href="http://hipaa.yale.edu/">HIPAA</a> (Health Insurance Portability and Accountability Act) compliance: Yale University must adhere to requirements of the Federal government (e.g., HIPAA and Federal agencies), business partners, as well as those imposed by contractual relationships (<a href="http://www.chime.org/">CHIME</a>, vendors, University consortia, etc.). <strong>If the data is </strong><em><strong>primary source</strong></em><strong> PHI-</strong><em>Protected Health Information</em> for TPO (treatment/payment/operations) or primary source PHI for approved research or pre-research, the only allowable method for encryption is the Yale University implementations of PGP.</p> <div> <h2><a name="7" id="7"></a>7. Revision History</h2> </div> <ul class="rteindent1"> <li>February 23, 2000</li> <li>February 25, 2003</li> <li>August 17, 2010</li> <li>December 11, 2014 – Clarification of encryption standards.</li> <li>December 16, 2014</li> </ul> </div></div></div><div class="field field-label-hidden field--tags-view"><div class="field-items"><div class="field-item even"></div></div></div></div> </div> </div> <div id="secondary-content" class="secondary-content"> </div> <footer id="footer" class="region region-footer clearfix"> <div class="footer__inner"> <div id="block-block-258" class="block footer-menu__column block--block block--block-258 first odd"> <h2 class="block__title block__title block-title">Helpful Links</h2> <ul> <li><a href="/operations">Operations</a></li> <li><a href="https://yaleedu.sharepoint.com/sites/inside-your-yale" target="_blank">Inside Your Yale</a></li> <li><a href="https://statusboard.apps.yale.edu/" target="_blank">Yale Status Board</a></li> <li><a href="/work-yale/support">Support</a></li> </ul> </div> <div id="block-block-259" class="block footer-menu__column block--block block--block-259 even"> <h2 class="block__title block__title block-title">Required Information</h2> <ul> <li><a href="https://usability.yale.edu/web-accessibility/accessibility-yale">Accessibility at Yale</a></li> <li><a href="/federal-and-state-notice-requirements">Federal and State Notice Requirements</a></li> <li><a href="https://www.yale.edu/nondiscrimination">Nondiscrimination/Title IX</a></li> <li><a href="https://www.yale.edu/privacy-policy">Privacy Policy</a></li> </ul> </div> <div id="block-block-250" class="block footer-menu__column block--block block--block-250 odd"> <h2 class="block__title block__title block-title">Yale Shuttle</h2> <p><a href="/work-yale/campus-services/yale-transit/shuttle"><img alt="Yale Shuttle Map" src="/sites/default/files/images/shuttle-routes-web.png" style="width:185px; height:123px" width="185" height="123" /></a></p> </div> <div id="block-block-6" class="block block--footer-copyright block--block block--block-6 last even"> <div class="footer-copyright__logo"><a class="icon-yale" href="http://www.yale.edu"><span class="element-invisible">Yale</span></a></div> <div class="footer-copyright__links">Copyright © 2025 Yale University <span class="link-segment first">All Rights Reserved</span> <a href="/contact-us" class="link-segment">Contact Internal Communications</a></div> </div> </div> </footer> </div> <script src="https://your.yale.edu/sites/default/files/js/js_OolvlotAkDBzF3Ryz2uN24wmwGGhm89rPlIemytlzkI.js"></script> <script> (function() { var sz = document.createElement('script'); sz.type = 'text/javascript'; sz.async = true; sz.src = '//siteimproveanalytics.com/js/siteanalyze_66356571.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(sz, s); })(); </script> <script type="text/javascript">window.NREUM||(NREUM={});NREUM.info={"beacon":"bam.nr-data.net","licenseKey":"6ac5e27a90","applicationID":"168632476","transactionName":"NFAAZ0RQW0MAU0EKCw0aN0FfHhpZD1RQG0oTXRI=","queueTime":0,"applicationTime":493,"atts":"GBcDEQxKSE0=","errorBeacon":"bam.nr-data.net","agent":""}</script></body> </html>