PATENT CLAIM ANALYSIS

Application Number: 15890900
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-06
Patent Classification: ["380", "285000"]

Abstract:
Embodiments of the present invention disclose a key exchange method and apparatus, which relate to the communications field, and can enable user equipments establishing a D2D link to share a set of keys, and further, information security can be achieved when a user equipment transmits service data or a signaling message through a Ud interface. A network device acquires a first key, and sends a message including the first key to a second user equipment, so that the second user equipment uses, when communicating with a first user equipment by using a D2D link, the first key to protect transmitted information. Embodiments of the present invention are applicable to an exchange process of keys for protecting data on a D2D link.

Claim (Index 13):
The apparatus according to  claim 7 , wherein\n the processor is further configured to: determine, according to a pre-stored cryptographic algorithm list, a security capability of the first user equipment, and a security capability of the second user equipment, a cryptographic algorithm that is applicable to the first user equipment and the second user equipment and whose priority ranks first in the cryptographic algorithm list; and the transmitter is further configured to: send the cryptographic algorithm to the first user equipment and the second user equipment, wherein:\n the security capability of the first user equipment is used to indicate a cryptographic algorithm applicable to the first user equipment; \n the security capability of the second user equipment is used to indicate a cryptographic algorithm applicable to the second user equipment; \n the cryptographic algorithm comprises at least one of an encryption algorithm i or an integrity protection algorithm; \n the encryption algorithm is used to encrypt data transmitted on the D2D link; and \n the integrity protection algorithm is used to perform integrity protection on information transmitted on the D2D link.

Metadata:
- Claim Count in Document: 47.0
- Percentile: 88.0
- Lexical Diversity: 1.91304
- Patent Class: 380.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['11618537', '15070678', '15139749', '11776421', '11776396']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4401421695332185
- 35 USC 102 Novelty (BERT): 0.4725967779188779
- Combined Prediction Score: 0.4433876303717844
- Mean Citation Score: 183.325652
- Max Citation Score: 188.08527
- Similarity Product: 143.46037485043468

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