Korea Institute of Science & Technology Information

Won Hyuk Lee

Chan Kyun Lee

Eun Joo Lee

Yong Hwan Kim

Il Kwon Sohn

Kyu Seok Shim

Kwang Il Bae

The present disclosure according to at least one embodiment provides a quantum key distribution (QKD)-based quantum digital signature method using a trusted node, the QKD-based quantum digital signature method being performed by a trusted node. The method comprises sharing a first secret key with a message-sending node, sharing a second secret key with a message-receiving node, generating a first trusted-node signature by performing a partial QKD process together with the message-sending node, generating a second trusted-node signature by performing a partial QKD process together with the message-receiving node, and verifying a first message with the shared first and second secret keys and with the first and second trusted-node signatures.

Quantum key distribution-based quantum digital signature method and system including trusted node

The present disclosure relates to a quantum key distribution network apparatus and an operation method for a quantum key distribution network, for independently operating a data transfer path and a quantum key consumption path on which a quantum key is consumed to encrypt corresponding data in a quantum key distribution network.

Network apparatus for quantum key distribution, and operation method for quantum key distribution network

Disclosed are an apparatus for managing quantum keys and a method of operating the same to rapidly and flexibly provide quantum keys for network services by effectively and efficiently distributing quantum keys in a quantum-secured network.

Apparatus for managing quantum key and method of operating same

The present disclosure relates to a fiber network operation apparatus for providing a method of determining a physical path in consideration of network performance and resource efficiency in a space division multiplexing-based fiber network and allocating optical resources according thereto, and an operation method thereof.

Operation apparatus for fiber network and control method thereof

The present disclosure relates to an eavesdropper detection apparatus and an operating method thereof, capable of effectively detecting an eavesdropper existing between a transmitter and a receiver in bit transmission by a quantum key distribution scheme.

Growing community of inventors

Sejong-si, South Korea

Won Hyuk Lee