PGP

GnuPGP, to be precise.
My public key is here (you can also find it at pgp.mit.edu);

-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: GnuPG/MacGPG2 v2.0.17 (Darwin)
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DQRKa4GUEBAA1jisns4Y2rXJxZDo5ERDs23Q+vKw14nMiBVJDVPBAq0fjD+Z8wik
9xuIys3H99OSbaCeu6b6vrGk4dc036nDCMZ3zefsX4oI+mczRnKWt8jSICjBi+uG
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q5OpZcXyhzvnM+mKci6EEWZjA5VW/pkmcJNbu1+rVFlty3TjLfKZZIdFrSoDd4NB
ksMO5dfHPY1oq4n2EM+kN3Kg9YYlYwk8FspR2/u2UT+HEquCjFQghOz0yuN0VJtG
quPB6cWEG6aBGVHDCXivP3+ALGcFjXa5NtwcRcs5q3zl80DxTACxTDniE8/a1gOq
1uGoOBdsOvxt6cgEJLg0oGkZBWGM+nOxfUqycjC9zBHZH3zLE5WWCb10HkYFbkC5
295/6CVIwQ1/WJWBAm/kIOrit6+lOKUUn+3GQVQN86QhoxA1B1m21WJoEObZwMOy
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zOi2KOIapGXicK/czOl9Dtwt1NuwbTiA6M4UCCiCkXzP3zjw4BfzEwcAAwUP/3Sv
uiDX/Pq7ZfohFe9VOekFbDN1PfAj/M5tFYrOQ4mJuLCYjBJ2WxqWXSyDZb5uysIu
uhPp8nWnKCA32oAlnLgqksnYUIbTVDldRy8lbkSevdrjw5zy5ESBH7DeXoEzovVd
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2OCyvTZtqf/4J4PbBPJ/gx6AVg/eIBto8CZ/pAtSPnBaz74Vhax6TxYlQnsMnzRG
M/NFWbTLwEBNzg5tkhO1hztj4WHNx4uVCxBQrwwUy4d1IDgVnEOWxN0HpzrONXu/
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kDlizII5TEPr577IGPPolzVmCRrppOTAEmDahZv9wY5Nu7+CjY0icqY95JiWElYA
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arDFe2NkEYijmNqyFCfNgrDyRufKbrcIEWKdtlSF1MzOXaCx9nCGdt/3jKt24QC/
Cq7yxuJ9Ox7x45Ae1Lk7udVJvLxqQCPgzeG7eI4y7xO3aMS8XUIlsqNc9j/t0Bvp
Rb/kUsbAmKrS2uV1Tp6tMQZRvtMOcxg+2GsNUPGHiE8EGBECAA8FAkprgZQCGwwF
CQeEzgAACgkQzbC57kilnispRwCfb118Kw6LXNCAHXDoTo8oNFnfZmUAoJ90HWds
U82aCzV+N32NIICOzecd
=XFE3
-----END PGP PUBLIC KEY BLOCK-----