1

I am starting to play around with Ethereum and smart contracts.

I was wondering is there is a way in Eth to revoke or kill of a public key you have given out?

If so, will the other party be notified or can it be done without their knowledge.

2

You cannot delete a public key once it has been provided. Why? It's 'public'.

If you are concerned of your wallet(read: private key), then you might want to remove that particular key from you usage and move funds stored in it to a new one.

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  • Well i was thinking more on the lines of using the blockchain as a storage medium for sensitive information. So lets say i have a file that i control with the private key and i give you a public key for viewing. But i was thinking on a conditional layer were i could say after x time after being issue, this public key is no longer valid. – Diego May 31 '18 at 2:08
  • I could see an application of transient cryptography here en.m.wikipedia.org/wiki/Transient-key_cryptography – Vignesh Karthikeyan May 31 '18 at 3:27

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