Terminal device, information processing system, method of controlling terminal device, and program

Patent metadata

Field	Value
Publication number	US-11475116-B2
Application number	US-201816488349-A
Country	US
Kind code	B2
Filing date	Mar 7, 2018
Priority date	Mar 21, 2017
Publication date	Oct 18, 2022
Grant date	Oct 18, 2022

Abstract

A terminal device that acquires record information recorded on an IC card and performs information processing includes: a terminal key acquisition unit configured to acquire a terminal key from a terminal key card different from the IC card; and an authentication unit configured to perform connection authentication with a server performing the connection authentication with the own terminal device using the terminal key.

First claim

The invention claimed is:

1. A terminal device configured to process record information of an IC card in communication with a server, the terminal device comprising:
at least one memory configured to store instructions; and
at least one processor configured to execute the instructions to:
acquire an encrypted terminal key from a secondary card different from the IC card, wherein the encrypted terminal key represents a terminal key encrypted by a first key;
transmit the encrypted terminal key to the server for its authentication such that the server acquires the first key from the encrypted terminal key;
receive the first key from the server;
decrypt the encrypted terminal key using the first key, thus reproducing the terminal key;
transmit an encrypted request signal encrypted by the terminal key to the server such that the server decrypts the encrypted request signal to obtain a second key and to transmit to the terminal device an encrypted second key encrypted by the terminal key;
decrypt the encrypted second key using the terminal key, thus reproducing the second key; and
communicate with the IC card using the second key.

2. The terminal device according to claim 1 , wherein the processor is further configured to:
acquire from the IC card its record information encrypted by the second key;
perform a predetermined process using the record information, thus producing a processing result;
encrypt the processing result using the second key; and
write the encrypted processing result on the IC card.

3. An information processing system comprising:
an IC card configured to record its record information, which is different from a secondary card configured to store an encrypted terminal key representing a terminal key encrypted by a first key;
a server; and
a terminal device comprising a memory configured to store instructions and a processor configured to execute the instructions to:
acquire the encrypted terminal key from the secondary card;
transmit the encrypted terminal key to the server for its authentication such that the server acquires the first key from the encrypted terminal key;
receive the first key from the server;
decrypt the encrypted terminal key using the first key, thus reproducing the terminal key;
transmitting an encrypted request signal encrypted by the terminal key to the server such that the server decrypts the encrypted request signal to obtain a second key and to transmit to the terminal device an encrypted second key encrypted by the terminal key;
decrypt the encrypted second key using the terminal key, thus reproducing the second key; and
communicate with the IC card using the second key.

4. A communication method for a terminal device configured to process record information of an IC card in communication with a server, the communication method implemented by the terminal device comprising:
acquiring an encrypted terminal key from a secondary card different from the IC card, wherein the encrypted terminal key represents a terminal key encrypted by a first key;
transmitting the encrypted terminal key to the server for its authentication such that the server acquires the first key from the encrypted terminal key;
receiving the first key from the server;
decrypting the encrypted terminal key using the first key, thus reproducing the terminal key;
transmitting an encrypted request signal encrypted by the terminal key to the server such that the server decrypts the encrypted request signal to obtain a second key and to transmit to the terminal device an encrypted second key encrypted by the terminal key;
decrypting the encrypted second key using the terminal key, thus reproducing the second key; and
communicating with the IC card using the second key.

Assignees

• Nec Corp

Inventors

• Ohno Takeo

Classifications

• H04L63/0892

  by using authentication-authorization-accounting [AAA] servers or protocols · CPC title

• G06F21/34 Primary

  involving the use of external additional devices, e.g. dongles or smart cards · CPC title

• H04L63/0853

  using an additional device, e.g. smartcard, SIM or a different communication terminal (cryptographic mechanisms or cryptographic arrangements for entity authentication involving additional secure or trusted devices H04L9/3234) · CPC title

• H04L9/08

  Key distribution {or management, e.g. generation, sharing or updating, of cryptographic keys or passwords (network architectures or network communication protocols for supporting key management in a packet data network H04L63/06)} · CPC title

• H04L9/0897

  involving additional devices, e.g. trusted platform module [TPM], smartcard or USB · CPC title