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Re: Re; Time Expiry Algorithm
From: Andrew Farmer <andfarm () teknovis com>
Date: Sun, 21 Nov 2004 15:52:50 -0800
On 21 Nov 2004, at 00:14, Jacqueline Singh wrote:
Gautam R. Singh <gautam.singh () gmail com> wrote:I was just wondering is there any encrytpion alogortim which expires with time. For example an email message maybe decrypted withing 48 hours of its delivery otherwise it become usless or cant be decrypted with the orignal keyNo. Think about it for a moment.(Clocks can be changed.)What if you decided to code into the encryption the use of atomic clocks, and include more than one or two as a redundancy/security check?
That's an implementation, not an algorithm.An encryption *algorithm* must be a fixed set of rules that map inputs to outputs. In your proposed algorithm, one of the inputs is the current time - and that can be changed, by the *definition* of an algorithm.
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Current thread:
- Re; Time Expiry Algorithm Jacqueline Singh (Nov 21)
- Re: Re; Time Expiry Algorithm Raj Mathur (Nov 21)
- Re: Re; Time Expiry Algorithm Andrew Farmer (Nov 21)