Can You Solve the Encryption Puzzle In the EFF's Def Con T-Shirt?

The annual hackers' conference, DEF CON, wrapped up yesterday, but one of the weekend's many great mysteries still persists. The images above are an encryption puzzle ("Encryption is Key") that was printed on the Electronic Frontier Foundation's fundraising t-shirts from the event. As of Sunday morning, no one had solved it, so here's a hint, straight from our friends at the EFF.

Monday, August 5, 2013
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