walleted.py 文件源码

def verifySignature(self, msg: Dict[str, str]):
        signature = msg.get(f.SIG.nm)
        identifier = msg.get(IDENTIFIER)
        msgWithoutSig = {k: v for k, v in msg.items() if k != f.SIG.nm}
        # TODO This assumes the current key is the cryptonym. This is a BAD
        # ASSUMPTION!!! Sovrin needs to provide the current key.
        ser = serializeMsg(msgWithoutSig)
        signature = b58decode(signature.encode())
        typ = msg.get(TYPE)
        # TODO: Maybe keeping ACCEPT_INVITE open is a better option than keeping
        # an if condition here?
        if typ == ACCEPT_INVITE:
            verkey = msg.get(VERKEY)
        else:
            try:
                link = self.getLinkForMsg(msg)
                verkey = self.getVerkeyForLink(link)
            except (LinkNotFound, VerkeyNotFound):
                # This is for verification of `NOTIFY` events
                link = self.wallet.getLinkBy(remote=identifier)
                # TODO: If verkey is None, it should be fetched from Sovrin.
                # Assuming CID for now.
                verkey = link.remoteVerkey

        v = DidVerifier(verkey, identifier=identifier)
        if not v.verify(signature, ser):
            raise SignatureRejected
        else:
            if typ == ACCEPT_INVITE:
                self.logger.info('Signature accepted.')
            return True