Cypherpunks envisioned a world where free cryptographic programs in the hands of everyday internet users promised total secrecy—from hackers, snoops, law enforcement, and even intelligence agencies. For ideological libertarians who dreamed of a day when governments could no longer control what they said, what they owned, or what they put in their bodies, encryption tools represented a new sort of untouchability: a future in which communications not only were impervious to eavesdropping but could be carried out behind perfectly unidentifiable and untraceable pseudonyms. And if anonymous and
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