cypherpunk
n.
[from {cyberpunk}] Someone interested in the uses of encryption via
electronic ciphers for enhancing personal privacy and guarding against
tyranny by centralized, authoritarian power structures, especially
government. There is an active cypherpunks mailing list at
<[email protected]> coordinating work on public-key
encryption freeware, privacy, and digital cash. See also {tentacle}.