{"id":87,"date":"2006-12-15T21:46:32","date_gmt":"2006-12-15T19:46:32","guid":{"rendered":"http:\/\/blackbag.toool.nl\/?p=87"},"modified":"2006-12-15T21:46:52","modified_gmt":"2006-12-15T19:46:52","slug":"military-grade-padlocks-and-the-seven-part-rule","status":"publish","type":"post","link":"https:\/\/blackbag.toool.nl\/?p=87","title":{"rendered":"Military grade padlocks and the ‘seven parts’ rule…"},"content":{"rendered":"

I do not know if there is any truth to the story, but it is nice to
\ntell anyway. The story is that guns and rifles never have more then
\nseven ‘basic parts’. The reason for this is that soldiers will be
\nconfused and make mistakes if the need to clean or repair the gun and
\nthere are more then seven parts.<\/p>\n

I hear you think, what does this have to do with locks?<\/p>\n

\"7<\/a><\/p>\n

Well … besides guns the army also makes use of locks. Locks in
\nhigh-security environments. One of the requirements for these locks is
\nthat the core can be replaced ‘in the field’. In case of a missing key,
\nor suspicion the key is compromised the core of the lock needs to be
\nreplaced asap. Of course they could replace the entire lock, but at
\nthe cost of US$ 1.200 each this is even over the top for the US army.
\nIt is much cheaper to only change the core of the lock.<\/p>\n

In order to have people change the core in the field, the locks are
\nconstructed with the ‘maximum of seven parts’ rule in mind.<\/p>\n

Han Fey has got some of these real high security padlocks in his
\ncollection. The top model being the Sargent and Greenleaf 833<\/a>. The
\nnice thing about this S&G 833 is that it is protected against a wide
\nrange of attacks.<\/p>\n

To secure it against manipulation the lock contains a six pin Medeco
\nBi-Axial core. Good luck picking or manipulating that …<\/p>\n

But what is real special are the ceramic inserts. These strategically
\nplaced strips of hard ceramics prevent cutting and grinding. Last toool
\nevening by accident a ceramic expert was present. He looked at the
\nceramic material and concluded is could probably not even be cut with
\ndiamond drills or grinders. He was impressed by it. Pretty neat.<\/p>\n

The S&G 833 is also the only padlock in the world (?) that will resist
\nan attack with liquid nitrogen. The idea behind this attack is to keep
\na lock dipped in liquid nitrogen for 30 minutes, cooling the metal
\nclose to -196 degree Celsius. All other metal objects will shatter if
\nthat cold and hit with a hammer. But not this lock. Supposably the
\nmetal alloy is designed to be secure against this. Unbelievable …<\/p>\n

And last but not least all parts of (the military version of) this
\nlock have a serial number stamped into it. This is to prevent people
\n‘peeling’ the lock layer by layer until they reached the core. With
\nthe naked core in front of you it is not too difficult to disassemble
\nit and see the size and rotation angle of the pins. Once an attacker
\nknows these parameters he makes a key for the lock, rebuilds the core
\nand inserts it in a fresh padlock. But with codes punched into
\ndifferent parts of the lock this attack is not made easy.<\/p>\n

And last but not least Han shows a military version of an Abloy padlock.<\/p>\n

I hope you enjoy another exclusive blackback video on military grade padlocks<\/a> (10 minutes, WMV 79 Mb)<\/p>\n","protected":false},"excerpt":{"rendered":"

I do not know if there is any truth to the story, but it is nice to tell anyway. The story is that guns and rifles never have more then seven ‘basic parts’. The reason for this is that soldiers will be confused and make mistakes if the need to clean or repair the gun […]<\/p>\n","protected":false},"author":171,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"_links":{"self":[{"href":"https:\/\/blackbag.toool.nl\/index.php?rest_route=\/wp\/v2\/posts\/87"}],"collection":[{"href":"https:\/\/blackbag.toool.nl\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blackbag.toool.nl\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blackbag.toool.nl\/index.php?rest_route=\/wp\/v2\/users\/171"}],"replies":[{"embeddable":true,"href":"https:\/\/blackbag.toool.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=87"}],"version-history":[{"count":0,"href":"https:\/\/blackbag.toool.nl\/index.php?rest_route=\/wp\/v2\/posts\/87\/revisions"}],"wp:attachment":[{"href":"https:\/\/blackbag.toool.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=87"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blackbag.toool.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=87"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blackbag.toool.nl\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=87"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}