$ curl -s --head https://www.cs.umd.edu/~waa/414-F11/IntroToCrypto.pdf | grep la...

		_kst_ on July 2, 2023 \| parent \| context \| favorite \| on: Intro to Cryptography [pdf] (2011) `$ curl -s --head https://www.cs.umd.edu/~waa/414-F11/IntroToCrypto.pdf \| grep last-modified last-modified: Wed, 07 Sep 2011 17:07:09 GMT`