A few years ago I came across an amusing Slashdot story: 'Australian Gov't offers $560k Cryptographic Protocol for Free'. The story concerned a protocol developed by Australia's Centrelink, the equivalent of our Health and Human Services department, that was wonderfully named the Protocol for Lightweight Authentication of ID, or (I kid you not), 'PLAID'.
more here...........http://blog.cryptographyengineering.com/2014/10/attack-of-week-unpicking-plaid.html
more here...........http://blog.cryptographyengineering.com/2014/10/attack-of-week-unpicking-plaid.html