The invention relates to a
quantum key management method and
system for
satellite internet biological characteristics, and the method comprises the following steps: carrying out the registration of biological characteristics and the initialization of communication protocol parameters for a user terminal which is accessed for the first time; for the
registered user terminal, before initiating communication each time, binding the real-time biological characteristics with the
quantum key, and carrying out encrypted transmission of the
session key by using the bound
quantum key, so as to carry out encrypted transmission of
satellite internet transmission data by using the
session key; and in the
encryption transmission process of the
satellite internet transmission data, according to a preset period, performing satellite link
security level adjustment and quantum key dynamic updating. According to the invention, identity
authentication and terminal
authentication in a high-
delay and narrow-bandwidth application scene can be realized, the security problems of identity counterfeiting,
key leakage and the like are solved, and the method can be applied to satellite internet scenes such as emergency communication, field operation and the like, and has the advantages of strong compatibility, low deployment cost and the like.