US 11,757,856 B2
Cryptographic communication system, cryptographic communication method, and cryptographic communication apparatus
Takehiko Mieno, Naganoken Azuminoshi (JP); and Hiroyuki Okazaki, Naganoken Naganoshi (JP)
Assigned to SEIKO EPSON CORPORATION, Tokyo (JP); and Shinshu University, Nagano (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP); and Shinshu University, Nagano (JP)
Filed on Dec. 8, 2021, as Appl. No. 17/546,012.
Claims priority of application No. 2020-204371 (JP), filed on Dec. 9, 2020.
Prior Publication US 2022/0182367 A1, Jun. 9, 2022
Int. Cl. H04L 29/06 (2006.01); H04L 9/40 (2022.01); H04L 9/32 (2006.01); H04L 9/08 (2006.01)
CPC H04L 63/061 (2013.01) [H04L 9/0838 (2013.01); H04L 9/0861 (2013.01); H04L 9/32 (2013.01); H04L 63/0435 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A cryptographic communication system comprising:
a first cryptographic communication apparatus including:
a first tamper-resistant device that stores a first key generation function, and
a first storage unit that stores a first individual information; and
a second cryptographic communication apparatus including:
a second tamper-resistant device that stores a second key generation function, and
a second storage unit that stores a second individual information, wherein
the first cryptographic communication apparatus generates a first shared key using the first key generation function and the second individual information, and
the second cryptographic communication apparatus generates a second shared key using the second key generation function and the first individual information.