PATENT CLAIM ANALYSIS

Application Number: 15754431
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-08
Patent Classification: ["713", "170000"]

Abstract:
A message authenticator generating apparatus ( 10 ), for each integer i, taking as input a key K and a value m′[i] which is generated from a message M, calculates a value c[i] by a block cipher E. The message authenticator generating apparatus ( 10 ), taking as input the value c[i] for each integer i, calculates a value w[ 1 ], a value w[ 2 ], and a value w[ 3 ] each maintaining the randomness of the value c[i]. The message authenticator generating apparatus ( 10 ), taking as input the value w[ 2 ] and the key K, calculates a value K′ by a function e which is a substitution function if the key K is fixed, taking as input the value w[ 1 ] and the value K′, calculates a value c by a block cipher E, and taking as input the value w[ 3 ] and the value c, calculates an authenticator T by a function d which is a substitution function if the value w[ 3 ] is fixed.

Claim (Index 12):
The message authenticator generating apparatus according to  claim 11 , wherein the processing circuitry,\n using a value y, calculates an exclusive OR of (c[i]\u00d7y b\u2212(i\u22121) ) for each integer i of i=1, . . . , b, and treats a calculation result as a value w, and calculates an exclusive OR of the value w and the value c[i] for each integer i of i=1, . . . , b and treats a calculation result as the value w[ 1 ], concatenates a (k\u2212n)-bit fixed value const[ 2 ] to the value w and treats a calculation result as the value w[ 2 ], and treats the value w as the value w[ 3 ].

Metadata:
- Claim Count in Document: 29.0
- Percentile: 88.0
- Lexical Diversity: 3.8
- Patent Class: 713.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['14420022', '12809440', '14772594', '11183674', '11938334']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4266134630445162
- 35 USC 102 Novelty (BERT): 0.5008664169182695
- Combined Prediction Score: 0.4340387584318916
- Mean Citation Score: 227.469954
- Max Citation Score: 248.75081
- Similarity Product: 180.2734270570392

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test