PATENT CLAIM ANALYSIS

Application Number: 15965463
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-11
Patent Classification: ["380", "277000"]

Abstract:
Disclosed is an orthogonal access control system based on cryptographic operations provided by multi-hop proxy re-encryption (PRE) that strictly enforces only authorized access to data by groups of users, scalable to large numbers of users. Scalable delegation of decryption authority can be shared with a plurality of members of a group whether those members be users or devices, and members of a group can further create sub groups and delegate decryption authority to those members, whether users or devices. Members are granted access via generation of transform keys, and membership or access can be revoked merely be deleting the transform key—no elimination of the encrypted data, regardless of its storage location, is needed.

Claim (Index 14):
The method of  claim 4 , wherein the first user, having one or more devices, creates a second group of users, and wherein generating a public key for the second group of users involves operations on both the server and a first device of the first user, comprising:\n a. generating a first public key and a first private key for the second group of users by the first user via the first device, and sending the public key for the second group of users to the server; b. generating a second public key and a second private key for the second group of users by the server; and c. combining, on the server, the first public key and the second public key to form a third augmented public key for the second group of users, such that the first user cannot determine the second private key and the server cannot determine the first private key, and therefore neither the first user, members of the first group of users, nor the server can independently decrypt any data encrypted to the augmented third public key, but where the first user and the server can cooperatively create transform keys for any users to be added to the second group of users.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 91.0
- Lexical Diversity: 1.65333
- Patent Class: 380.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15588614', '11193227', '13477306', '13763631', '15185575']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4466584757081454
- 35 USC 102 Novelty (BERT): 0.5076108911412484
- Combined Prediction Score: 0.4527537172514557
- Mean Citation Score: 269.208104
- Max Citation Score: 289.68906
- Similarity Product: 194.01224769253133

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