Wednesday, April 4, 2012

Check if Alice has my phone number, and don't tell Eve

Alice is a friend of mine, Bob is my assistant but I don't want him to know my super-private phone number. Also, I want to check whether Alice has my super-private phone number but I don't want to communicate the number to Bob. What can I do to preserve my number?
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1 comment:

  1. UnknownApril 23, 2012 at 11:03 AM

    ( Out of box :P ) Ask Alice to call you on your super private number.

    Encryption is the solution? Encrypt the number with a known (to you and Alice only) private key, and courier it by Bob.

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