https://cryptabyte.com/
"CryptAByte.com is a free online drop box that enables secure (encrypted) message
and file sharing over the web using a public-key infrastructure.
Messages and files are encrypted using a public key and can only be decrypted using
the passphrase entered when your key is created. Your data is never stored in plaintext,
and is impossible to decrypt without your passphrase."
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"Per trasmettere 1 bit di informazione in un ambiente a temperatura T si necessitano kTln2 joule di energia"
gpg --keyserver pgp.mit.edu --recv-keys E25ED3A9
web site http://www.autistici.org/packz
blog http://packz.noblogs.org