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What about Windows compatibility?
Authored by: dsouth on Aug 07, '06 10:52:42AM
You can encrypt individual files using the OpenSSL comand line program. It's installed by default under MacOS and Linux, and can be installed under windows as part of cygwin or as a standalone.
To encrypt a file "myfile":
  openssl enc -e -a -aes256 -salt -in myfile -out myfile.aes256
To decrypt
  openssl enc -d -a -aes256 -in myfile.aes256 -out myfile
Example uses AES with a 256 bit key in cypherblock chaining mode. Other ciphers are available.

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