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Podcasting “The Best Defense Against Rubber-Hose Cryptanalysis”

The cypherpunks were wrong (but also right)

Cory Doctorow
8 min readApr 4, 2022
A medieval engraving of a prisoner being tortured on a rack; in the background is a waterfall effect from The Matrix.

This week on my podcast, I read my Medium column, “The Best Defense Against Rubber-Hose Cryptanalysis,” about what the cypherpunks got wrong, what they got right, and what that says about claims that cryptocurrency will defend us from tyranny:

https://onezero.medium.com/rubber-hoses-fd685385dcd4

30 years ago, the cypherpunks — forerunners of the cryptocurrency movement — waged an epic battle to ensure that we could all access working cryptography. They believed that safeguarding individuals’ right to privacy technology could profoundly alter the relationship of people and their governments.

Governments agreed! The NSA and other agencies were determined to ban civilian access to working crypto, insisting instead that we should all use a deliberately broken cipher that they were widely understood to be able to break. The agencies claimed that this would strike a balance: on the one hand, it would keep American individuals, agencies and businesses safe from criminals, state actors and corporate spies.

On the other hand, it would let the agencies break into our communications to keep us safe from child pornographers, terrorists, copyright infringers and the mafia (AKA…

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Cory Doctorow
Cory Doctorow

Written by Cory Doctorow

Writer, blogger, activist. Blog: https://pluralistic.net; Mailing list: https://pluralistic.net/plura-list; Mastodon: @pluralistic@mamot.fr

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This is all good info and the EFF has done great stuff, but it ignores the work of David Chaum (full disclosure: I work with him) a decade earlier, who in defiance of the NSA organized Crypto '82, which was also in effect the founding conference of…