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 20):
The non-transitory, tangible computer readable storage medium of  claim 19 , further comprising:\n a. providing a first device of the third user as part of a first group of devices, where the third user is an administrator of the first group of devices; b. generating a public key and a private key for the first device; and generating a transform key from the third user to the first device, by:\n i. transmitting a request from the first device to the server for access to the first ciphertext; \n ii. granting the first device access to the first ciphertext by, on the server, transforming the first ciphertext with the transform key from the first group of users to the second user to form a second transformed ciphertext or denying access to the second user if no transform key from the first group of users to the second user exists; then transforming the second transformed ciphertext using the transform key from the second user to the first device to form a second doubly-transformed ciphertext; and \n iii. decrypting the second doubly-transformed ciphertext to reveal the data to the second user, via the first device, using the private key of the first device.

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): 0.4473740334007242
- 35 USC 102 Novelty (BERT): 0.5033723673427472
- Combined Prediction Score: 0.4529738667949264
- Mean Citation Score: 269.208104
- Max Citation Score: 289.68906
- Similarity Product: 213.23618545400265

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