I am not sure whether this is literally possible or not, but it doesn't make a lot of sense. Sending an encrypted message with the decryption key right along si

I am not sure whether this is literally possible or not, but it doesn't make a lot of sense. Sending an encrypted message with the decryption key right along side or otherwise in public view? The common use case is to _sign_ with a private key and _verify_ with the public key. If you need the contents of the message to be secret, you can use other methods. The signature proves something about the authorship of the original message. For example, if someone wished to make a prediction about the future, they might write down the prediction, sign it with a private key, but then only publish the signature. Later, when the prediction turns out to be true (or false), they publish the original text. The public key can then verify that the precise text of the original prediction created the previously published signature. edit: in this case, zobzu might have created a one-use private key, encrypted a prediction about DNSNMC with the corresponding public key, and will later publish that private key. Or it might be the output of /dev/urandom