Re: Is there any strong hand cipher?

From: Mxsmanic (
Date: 11/10/04

Date: Wed, 10 Nov 2004 20:20:44 +0100

John Smith writes:

> I read in David Kahn's book that in the 50s and 60s the Soviets
> generated OTPs by having clerks type "randomly" on keyboards. Kahn's
> book states that the Soviets felt that these keyboard generated OTPs
> were "random enough."

They were right. VENONA was broken by the reuse of pads, not by any
lack of randomness in them, IIRC.

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