I have a bunch of messages where I can run the encrypted message against a validation services, and get a response that the encrypted message is valid as well as the contents of the encrypted message. Naturally, I dont know the encryption key.

Is it possible to find out the key in order to compose a encrypted message?

  • 2
    Not if it's a well implemented modern encryption algorithm. It's one of the properties they defend against
    – Matthew
    Mar 14, 2016 at 17:06
  • @Matthew, add that as an answer if you are willing to elaborate a little bit.
    – d1str0
    Mar 14, 2016 at 17:22


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