PATENT CLAIM ANALYSIS

Application Number: 15924183
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-07
Patent Classification: ["380", "281000"]

Abstract:
One of n≥2 servers, connectable via a network, implements a cryptographic protocol using a secret key K which is shared between the n servers, and includes first and second server compartments. The first is connectable to the network, adapted to implement the cryptographic protocol, and stores a current key share of the secret key K. The second is inaccessible from the network in the operation of the server, stores a set of master keys, and is adapted, for each of successive time periods, to unilaterally generate a new key share of the secret key K and to supply it to the first as the current key share for that time period. The new key share includes a random share of a predetermined value p which is shared between the n servers, and the random share includes a function of the set of master keys.

Claim (Index 3):
The server as claimed in  claim 1  wherein n>2 and the set of master keys comprises respective master keys common to each of the servers other than the server, and wherein the random share comprises combination of pseudorandom functions of respective master keys.

Metadata:
- Claim Count in Document: 18.0
- Percentile: 90.0
- Lexical Diversity: 2.53226
- Patent Class: 380.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['14878933', '14953454', '14928813', '15042241', '14064618']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4498444345554466
- 35 USC 102 Novelty (BERT): 0.5183136559997061
- Combined Prediction Score: 0.4566913566998726
- Mean Citation Score: 248.01172599999995
- Max Citation Score: 321.32434
- Similarity Product: 229.77529771645547

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

Dataset: test