Create a custom key in SJCL that has an expiration time set for automatic deletion

My current project involves encrypting and decrypting data on the client-side using the SJCL library. However, I have a specific requirement that the encryption key must expire after a certain scheduled time. So my question is this:

  1. Can a key with an expiration date be generated while utilizing the SJCL (or any other) library?

  2. If so, how can this be achieved? It should be emphasized that the key needs to be destroyed on the client side without involving any server interactions.

I would greatly appreciate any assistance on this matter. Thank you.

javascriptencryptioncryptographyclient-sidesjcl

Answer №1

Without relying on outside assistance or programming tricks, there is no key with an inherent timeout feature.

Certificates do have expiration dates, allowing for signing messages and only accepting those with valid certificates. This effectively renders the key useless once expired.

To achieve this, use either PGP or CMS container formats to store certificates, data, and signatures, with the option of encrypting the data as well.

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