Patent application EP18155799A (EP), filed 2018-02-08
Publication number: EP3396921A1
Title: INFORMATION PROCESSING DEVICE TO GUARANTEE DATA INTEGRITY
Abstract: [0001]    According to an arrangement, an information processing device (10) includes a reception unit (32A), an addition unit (32G), and a first generation unit (32H). The reception unit (32A) is configured to receive first connected information including first information and first authentication information to authenticate the first information. The addition unit (32G) is configured to add, to the first connected information, guarantee information to guarantee an anteroposterior relation of reception of the first connected information. The first generation unit (32H) is configured to generate second authentication information to authenticate the first information, the guarantee information, and the first authentication information, the second authentication information being generated using the first information or the first authentication information and using the guarantee information.
IPC codes: G06F  21/    64            A I
H04L  29/    06            A I
H04L   9/    32            A I
H04W  12/    10            A I
H04W  12/    12            A I
H04W   4/    70            A I
Claims: number: 1
text: An information processing device (10; 30) comprising:
number: 2
text: The information processing device (10; 30) according to claim 1, further comprising a first output unit (321; 421) configured to output second connected information (76; 76') including the first information (71), the first authentication information (72), the guarantee information (73), and the second authentication information (74; 74').
number: 3
text: The information processing device (10; 30) according to claim 2, wherein the first output control unit (321; 421) is configured to output the second connected information (76; 76') to a storage (36; 46).
number: 4
text: The information processing device (10; 30) according to any one of claims 1 to 3, wherein the first generation unit (32H; 42H) is configured to generate the second authentication information (74; 74') using the guarantee information (73) and one of the first information (71) and the first authentication information (72) that has a smaller data size.
number: 5
text: The information processing device (10; 30) according to any one of claims 1 to 4, wherein the first authentication information (72) is a message authentication code, a random number, a counter value, a hash function, or a digital signature.
number: 6
text: The information processing device (10; 30) according to any one of claims 1 to 4, wherein the first authentication information (72) is a message authentication code.
number: 7
text: The information processing device (10; 30) according to any one of claims 1 to 6, wherein the guarantee information (73) is time information in regard to reception of the first connected information (70).
number: 8
text: The information processing device (10; 30) according to any one of claims 1 to 6, wherein the guarantee information (73) is count information in regard to the reception of the first connected information (70).
number: 9
text: The information processing device (10; 30) according to any one of claims 1 to 8, further comprising an oscillator (34) configured to oscillate a clock signal, wherein
the addition unit (32G) is configured to add, to the first connected information (70), the guarantee information (73) in accordance with the clock signal oscillated from the oscillator (34) .
number: 10
text: The information processing device (10) according to any one of claims 1 to 9, wherein
the addition unit (32G) is configured to add one piece of guarantee information (73) to a plurality of pieces of the first connected information (70), and
the first generation unit (32H) is configured to generate the second authentication information (74) using the first information (71) or the first authentication information (72) included in each of the pieces of first connected information (70), and using the one piece of guarantee information (73) added to the pieces of first connected information (70).
number: 11
text: The information processing device (10) according to any one of claims 1 to 9, wherein
the addition unit (32G) is configured to add one piece of guarantee information (73) to a plurality of pieces of the first connected information (70), and
the first generation unit (32H) is configured to generate the second authentication information (74) using a compressed value (75) of the first information (71) or the first authentication information (72) included in each of the pieces of first connected information (70), and using the one piece of guarantee information (73) added to the pieces of first connected information (70).
number: 12
text: The information processing device (10) according to any one of claims 1 to 9, wherein
the addition unit (32G) is configured to add a plurality of pieces of the guarantee information (73) to a plurality of pieces of the first connected information (70), respectively, and
the first generation unit (32H) is configured to generate the second authentication information (74) using the first information (71) or the first authentication information (72) included in each of the pieces of first connected information (70), and the pieces of guarantee information (73) respectively corresponding to the pieces of first connected information (70).
number: 13
text: The information processing device (10) according to any one of claims 1 to 9, wherein
the addition unit (32G) is configured to add a plurality of pieces of the guarantee information (73) to a plurality of pieces of the first connected information (70), respectively, and
the first generation unit (32H) is configured to generate the second authentication information (74) using a compressed value (75) of: the first information (71) or the first authentication information (72) included in each of the pieces of first connected information (70); and the pieces of guarantee information (73) respectively corresponding to the pieces of first connected information (70).
number: 14
text: The information processing device (30) according to any one of claims 1 to 9, further comprising a first verification unit (42Q) configured to derive a first verification result (86) of the first authentication information (72), wherein
the first generation unit (42H) is configured to generate the second authentication information (74') to authenticate the first information (71), the guarantee information (73), the first authentication information (72), and the first verification result (86), the second authentication information(74') being generated using the first information (71) or the first authentication information (72), the guarantee information (73), and the first verification result (86).
number: 15
text: The information processing device (30) according to claim 14, wherein
the addition unit (32G) is configured to add one piece of guarantee information (73) to a plurality of pieces of the first connected information (70), and
the first generation unit (42H) is configured to generate the second authentication information (74') using the first information (71) or the first authentication information (72) included in each of the pieces of first connected information (70), using the first verification results (86) of the pieces of first authentication information (72), and using the one piece of guarantee information (73) added to the pieces of first connected information (70).
number: 16
text: The information processing device (30) according to claim 14, wherein
the addition unit (32G) is configured to add one piece of guarantee information (73) to a plurality of pieces of the first connected information (70), and
the first generation unit (42H) is configured to generate the second authentication information (74') using a compressed value (75') of: the first information (71) or the first authentication information (72) included in each of the pieces of first connected information (70); and the first verification results (86) of the pieces of first authentication information (72), and using the one piece of guarantee information (73) added to the pieces of first connected information (70).
number: 17
text: The information processing device (30) according to claim 14, wherein
the addition unit (32G) is configured to add a plurality of pieces of the guarantee information (73) to a plurality of pieces of the first connected information (70), respectively, and
the first generation unit (42H) is configured to generate the second authentication information (74') using the first information (71) or the first authentication information (72) included in each of the pieces of first connected information (70), using the first verification results (86) of the pieces of first authentication information (72), and using the pieces of guarantee information (86) respectively corresponding to the pieces of first connected information (70).
number: 18
text: The information processing device (30) according to claim 14, wherein
the addition unit (32G) is configured to add a plurality of pieces of the guarantee information (73) to a plurality of pieces of the first connected information (70), respectively, and
the first generation unit (42H) is configured to generate the second authentication information (74') using a compressed value (75') of: the first information (71) or the first authentication information (72) included in each of the pieces of first connected information (70); the first verification results (86) of the pieces of first authentication information (72); and the pieces of guarantee information (73) respectively corresponding to the pieces of first connected information (70).
number: 19
text: An information processing device (10; 30) comprising:
Office action: search_report, dated 2018-10-31
Rejection reasons: novelty_epc_54
Prior art cited: ref_id: WO2016131575A1
ref_type: patent
severity: background
ref_id: US2014037092A1
ref_type: patent
severity: background
ref_id: US2012303973A1
ref_type: patent
severity: background
ref_id: US2012303973
ref_type: patent
severity: background
ref_id: US2014037092
ref_type: patent
severity: background
ref_id: WO2016131575
ref_type: patent
severity: novelty_destroying
Final disposition: pending (2018-10-31)