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Re: expiration dates on cryptography

To: John Curtis <[email protected]>
Subject: Re: expiration dates on cryptography
From: "Perry E. Metzger" <[email protected]>
Date: Wed, 08 Nov 1995 09:06:04 -0500
Cc: "'[email protected]'" <[email protected]>
In-Reply-To: Your message of "Wed, 08 Nov 1995 07:21:39 EST." <[email protected]>
Reply-To: [email protected]
Sender: [email protected]


John Curtis writes:
> The discussion between Mr. May and Mr. Shields concerning
> time-release cryptograhy raised an interesting question in my 
> mind.
> 
> Given that trust is often of an ephemeral nature, it would be
> quite useful to set time limits on secrets.  Would it be possible
> to cryptographically protect a secret such that it could not be
> decrypted after a certain time?

No.

.pm

References:
- expiration dates on cryptography
  - From: John Curtis <[email protected]>

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