A cryptographic signature that proves a message/content was authored or approved by a person, or anyone who posesses that person’s private key. The signature can be verified against their public identity (public key) without giving anyone the ability to impersonate their signature.
Anybody making a deepfake wouldn’t have access to the private key of the person they are trying to impersonate, so it would have to be posted without a matching signature or with none at all.
A cryptographic signature that proves a message/content was authored or approved by a person, or anyone who posesses that person’s private key. The signature can be verified against their public identity (public key) without giving anyone the ability to impersonate their signature.
Anybody making a deepfake wouldn’t have access to the private key of the person they are trying to impersonate, so it would have to be posted without a matching signature or with none at all.