PATENT CLAIM ANALYSIS

Application Number: 16067203
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-01
Patent Classification: ["726", "004000"]

Abstract:
An intermediate data transmission device arranges for mutual authentication between itself and a remote terminal ( 4 ) to allow data to be exchanged between the remote terminal ( 4 ) and a server ( 1 ) through the device. The server ( 1 ) sends first and second key codes (CK, RK) to the intermediate device (step  105 ), the key codes both being derived from a shared secret known to the server and remote terminal but not to the intermediate device. In response to a challenge ( 107 ) from the intermediate device the remote terminal ( 4 ) uses the shared secret to generate a duplicate (CK*) of the first key code and transmits the duplicate to the intermediate device (step  109 ). The intermediate device compares the first key code and the duplicate of the first key code (CK, CK*) received respectively from the server ( 1 ) and the remote terminal ( 4 ) to verify the authenticity of the remote terminal ( 4 ). The intermediate device then transmits the second key code (RK) to the remote terminal ( 4 ) (step  112 ), to be compared by the remote terminal with a duplicate (RK*) of the second key code to verify the authenticity of the intermediate device ( 3 ). This process allows the intermediate device ( 3 ) to be used without itself having the shared secret. The codes (RK, CK) generated by the server ( 1 ) may be encoded with a network identity of the intermediate device using the shared secret, such that the remote terminal ( 4 ) can only respond to the same intermediate device ( 3 ) that transmitted the codes (CK, RK). This prevents a “man-in-the middle” attack by another intermediate device, as without the shared secret no intermediate device can modify the codes (CK, RK) to include a different network identity.

Claim (Index 16):
A data communication device according to  claim 14 , having a detection system for detecting the or each remote data communications terminal and transmitting the respective challenge and response data in response to such detection

Metadata:
- Claim Count in Document: 25.0
- Percentile: 94.0
- Lexical Diversity: 3.53465
- Patent Class: 726.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['10451875', '11459719', '09756346', '11076175', '13113846']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.2997048125850133
- 35 USC 102 Novelty (BERT): 0.5000438699906911
- Combined Prediction Score: 0.3197387183255811
- Mean Citation Score: 211.088936
- Max Citation Score: 213.00777
- Similarity Product: 133.17152535059094

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

Dataset: test