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Re:The Criminal N.S.A. by sp332 on Friday June 28, 2013 @09:00AM (#5957692)
Wouldn't you have to encrypt the text repeatedly, once for each recipient?
Re:The Criminal N.S.A. by reeses on Friday June 28, 2013 @10:29AM (#5958142)
gpg handles this natively.

http://www.gnupg.org/gph/en/manual.html#AEN111

"multiparty encryption" is what you're looking for.