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 11):
The method of  claim 4 , further comprising:\n a. providing a fifth user; b. generating a public key and a private key for the fifth user; c. providing a first device of the fifth user; d. generating a public key and a private key for the first device of the fifth user; e. generating a transform key from the fifth user to the first device of the fifth user using the private key of the fifth user and the public key of the first device of the fifth user; f. encrypting third data to a multiplicity of groups and users, wherein that multiplicity includes the fifth user and the first group of users, forming a set of fifth ciphertexts, one for each of the multiplicity of groups and users; g. transmitting a request from the fifth user for access via the first device of the fifth user to the set of fifth ciphertexts; h. granting access to the fifth user by, on the server, locating an instance of the set of fifth ciphertexts that was encrypted to the fifth user, transforming the instance of the set of fifth ciphertexts that was encrypted to the fifth user using the transform key from the fifth user to the first device of the fifth user to form a fourth transformed ciphertext; and i. decrypting the fourth transformed ciphertext using the private key of the first device of the fifth user to recover the second data.

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): 0.4466535771177679
- 35 USC 102 Novelty (BERT): 0.5076398166696675
- Combined Prediction Score: 0.4527522010729579
- Mean Citation Score: 269.208104
- Max Citation Score: 289.68906
- Similarity Product: 193.88095084255104

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