Method, apparatus, and system for quantum key distribution

A non-transitory computer readable medium that stores a set of instructions that are executable by at least one processor of a quantum key distribution apparatus to cause the quantum key distribution apparatus to perform a method for quantum key distribution, the method comprising:

• transmitting a request for acquiring an identity-based authorized private key to a quantum security key service device, wherein the request includes identifier information of the requester and is forwarded by the quantum security key service device to a predetermined number of second quantum security key distribution devices;
• receiving a plurality of identity-based authorized sub-private keys generated, by the predetermined number of second quantum security key distribution devices, based on the identifier information and a plurality of system sub-private keys that have been split from an identity-based system private key using a threshold secret sharing mechanism and that have been shared with a corresponding number of quantum key distribution devices;
• and
• reconstructing an identity-based authorized private key based on the identity-based authorized sub-private keys.

A quantum key distribution apparatus, comprising:

• a memory storing a set of instructions;
• one or more processors configured to execute the set of instructions to cause the apparatus to perform:
• transmitting, by a requester, a request for acquiring an identity-based authorized private key to a quantum security key service device, wherein the request includes identifier information of the requester and is forwarded by the quantum security key service device to a predetermined number of second quantum security key distribution devices;
• receiving a plurality of identity-based authorized sub-private keys generated, by the predetermined number of second quantum security key distribution devices, based on the identifier information and a plurality of system sub-private keys that have been split from an identity-based system private key using a threshold secret sharing mechanism and that have been shared with a corresponding number of quantum key distribution devices;
• and
• reconstructing an identity-based authorized private key based on the identity-based authorized sub-private keys.