I'm crash studying the public key cryptography topic and I have a few questions about how signatures are created.
So are digital signatures just encrypted hashes? If that's the case then I can hash my symmetrically encrypted message, pass it with the signature maker with my private key, then it can promise authenticity and its data to be untampered (cause you'll have to recompute the hash on the other side)? Will the same private key and same hash give the same signature? On the other side what the verifier does is to create its own version of the signature and matches it with the received signature or does the public key have the ability to decrypt a message encrypted using the private key?
Sorry for all the questions i just started on this last night. Thanks in advance!