Diffie

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a man is kneeling down in a wrestling ring with the words diffie-hellman when the key is null
a man with a mullet is smiling and pointing at something
a man in a cowboy hat is saying `` well excuse me '' in a dark room .
a man wearing headphones is looking at the camera with the words `` aes encryption '' above him .
a man wearing a cowboy hat is sitting in a chair and saying `` that wasn 't my chair after all '' .