58 results about "Key encapsulation" patented technology

The invention discloses an authentication key exchange method based on a message recovery signature, and mainly solves the problems of relatively large communication traffic and relatively weak security in an original scheme. The method comprises the following implementation steps: each user generates a digital signature public and private key pair; the first user generates a secret key packagingpublic and private key pair of the first user and signs and sends the secret key packaging public and private key pair; the second user verifies the signature sent by the first user; the second user encapsulates the key and generates a hash value of the session process; the second user signs the ciphertext and the Hash value of the session process and sends the ciphertext and the Hash value to thefirst user; the first user verifies the signature sent by the second user; the first user de-packages and verifies the hash value of the session process; and both parties calculate session keys. Theauthentication key exchange protocol is constructed through the digital signature with the message reply mode and the key packaging mechanism, the communication traffic is saved, the security of the protocol is improved, and the method can be used for the Internet of Vehicles and ground-air communication.