A key-exchange system based on imaginary quadratic fields

We introduce the concept of attribute-based authenticated key exchange (AB-AKE) within the framework of ciphertext-policy attribute-based systems. A notion of AKE-security for AB-AKE is presented based on the security models for group key exchange ...

This paper discusses how to realize practical post-quantum authenticated key exchange (AKE) with strong security, i.e., CK⁺ security (Krawczyk, CRYPTO 2005). It is known that strongly secure post-quantum AKE protocols exist on a generic construction ...

Traditional password-based authentication protocols are vulnerable to various password-related attacks, while public key cryptography PKC is expensive to manage certificates. Moreover, the traditional identity-based cryptography suffers to key escrow. ...