gpg can do symmetric encryption: http://www.gnupg.org/documentation/manuals/gnup... | Hacker News

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gustavo_duarte on May 18, 2009 | parent | context | favorite | on: Coding Horror: Why Isn't My Encryption.. Encryptin...

gpg can do symmetric encryption:

http://www.gnupg.org/documentation/manuals/gnupg/Operational...

There are a few algorithms to choose from.

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