Portable electronic device, information processing device, information processing system, and information processing method

By introducing a memory, interface and processor structure into the IC card, using public key encryption processing to generate random numbers and share session keys, the problem of limited hardware resources when installing PQC is solved, and the effect of efficient installation and running PQC on devices with limited hardware resources is achieved.

JP2025038817APending Publication Date: 2025-03-19KK TOSHIBA +1
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Patent Information

Application Number
JP2023145654
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2023-09-07
Publication Date
2025-03-19

AI Technical Summary

Technical Problem

When installing Post Quantum Cryptography (PQC), existing IC cards and other security devices are difficult to effectively support the installation and operation of PQC due to limited hardware resources.

Method used

By introducing a structure including memory, interface and processor in the IC card, the processor generates random numbers and uses public keys for encryption to share the session key between the IC card and the information processing device, reducing dependence on hardware resources.

Benefits of technology

It realizes the installation and operation of PQC on devices with limited hardware resources, improving the encryption capability of secure devices and the security of data transmission.

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Abstract

To provide a portable electronic device capable of implementing a predetermined encryption algorithm with a limited hardware resource.SOLUTION: A portable electronic device includes a memory, an interface, and a processor. The memory stores encryption information including an encryption algorithm. The interface communicates with an information processing device. The processor generates a random number. In addition, the interface transmits the encryption information to the information processing device, and receives a public key transmitted from the information processing device out of the public key and a secret key generated on the basis of the encryption algorithm. The processor generates an encryption random number from the random number through encryption processing based on the public key. The interface transmits the encryption random number to the information processing device. The processor generates a session key used for communication with the information processing device on the basis of the random number.SELECTED DRAWING: Figure 2
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