<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div apple-content-edited="true" class=""><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; " class=""><div class="">Hi Jeff,</div><div class=""><br class=""></div></div></span></span></div><div><blockquote type="cite" class=""><div class="">On Jun 8, 2015, at 2:57 PM, Thompson, Jeff <<a href="mailto:jefft0@remap.ucla.edu" class="">jefft0@remap.ucla.edu</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
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<div class="">If the application uses a truncated key digest (e.g. the first 4 bytes of the digest), do you think we can still use the KeyDigest field? Or, if we treat the truncated key digest as a KeyId and put it in a Name, should the spec suggest a format for the
Name? </div>
</div></div></blockquote></div><br class=""><div class="">I would prefer to keep KeyDigest literally (i.e., the real sha256 digest of a key), so that it is consistent with other scenarios (e.g., KeyDigest of public key).</div><div class=""><br class=""></div><div class="">For the key name, I think the purpose is to allow both ends to uniquely identify the key. Is there any particular reason of using the first 4 bytes of the digest?</div><div class=""><br class=""></div><div class="">Yingdi</div></body></html>