Security encryption information generation method and system and 5G terminal authentication method and system

The invention provides a security encryption information generation method and system and a 5G terminal authentication method and system, and belongs to the technical field of terminal security management authentication. The security encryption information generation method comprises the following steps: calculating to obtain a first operator variable algorithm configuration field according to an initial operator variable algorithm configuration field, a root key and a national secret algorithm; calculating to obtain a first encryption operation value according to a random number and the first operator variable algorithm configuration field; and according to an authentication message, the first operator variable algorithm configuration field, the first encryption operation value, a fixed cycle constant and a fixed constant, obtaining encryption information through calculation. The 5G terminal authentication method applies the security encryption information generated by the above method. According to the meth