Another project (written in Python) apparently created about a year ago includes more links in the source to all the various Apple open source resources that document the KeyChain format:<p><a href="https:&#x2F;&#x2F;github.com&#x2F;n0fate&#x2F;chainbreaker" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;n0fate&#x2F;chainbreaker</a><p>I would have to dig quite a bit further to determine what is meant by &quot;even the seemingly unextractable ones&quot; in the README and whether or not this Python tool accomplishes the same. (My guess would be yes since it additionally supports decrypting the keychain using the in-memory master key.)<p>It was interesting to me to see what popped up when searching for the RFC 3217 (Triple-DES and RC2 Key Wrapping) IV:<p><a href="https:&#x2F;&#x2F;www.google.com&#x2F;search?q=4adda22c79e82105" rel="nofollow">https:&#x2F;&#x2F;www.google.com&#x2F;search?q=4adda22c79e82105</a><p>The oldest was a keychain extractor written by Matt Johnston (the author of Dropbear) copyright 2004 but only available via the Internet Archive back to 2011: <a href="https:&#x2F;&#x2F;web.archive.org&#x2F;web&#x2F;20110228153630&#x2F;http:&#x2F;&#x2F;www.ucc.asn.au&#x2F;~matt&#x2F;src&#x2F;extractkeychain-0.1&#x2F;extractkeychain.py" rel="nofollow">https:&#x2F;&#x2F;web.archive.org&#x2F;web&#x2F;20110228153630&#x2F;http:&#x2F;&#x2F;www.ucc.as...</a>