Secure device-to-device (D2D) communication
First Claim
Patent Images
1. A method comprising:
- receiving, at a first user equipment, an encrypted message in a first frame over an air interface between the first user equipment and a second user equipment during device-to-device (D2D) communication with the second user equipment, wherein the encrypted message represents a plaintext message that is encrypted by applying a cryptographic function to the plaintext message, a security key, and a first frame number of the first frame; and
decrypting, at the first user equipment, the encrypted message to recover the plaintext message using the cryptographic function, the security key, and the first frame number.
5 Assignments
0 Petitions
Accused Products
Abstract
User equipment decrypt information received in a first frame over an air interface during device-to-device (D2D) communication with another user equipment. The information is decrypted using a cryptographic function that is applied to a security key and a first frame number of the first frame.
11 Citations
22 Claims
-
1. A method comprising:
-
receiving, at a first user equipment, an encrypted message in a first frame over an air interface between the first user equipment and a second user equipment during device-to-device (D2D) communication with the second user equipment, wherein the encrypted message represents a plaintext message that is encrypted by applying a cryptographic function to the plaintext message, a security key, and a first frame number of the first frame; and decrypting, at the first user equipment, the encrypted message to recover the plaintext message using the cryptographic function, the security key, and the first frame number. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A method comprising:
-
determining, at a first user equipment, a first frame number of a first frame received over an air interface between the first user equipment and a second user equipment during device-to-device (D2D) communication with the second user equipment, wherein the first frame number is determined based on a reference frame number stored by the first user equipment, a corresponding reference time stored by the first user equipment, and a current time; and decrypting, at the first user equipment, information received in the first frame using a cryptographic function that is applied to a security key and a first frame number of the first frame. - View Dependent Claims (7, 8, 9)
-
-
10. A first user equipment comprising:
-
a receiver to receive an encrypted message in a first frame over an air interface between the first user equipment and a second user equipment during device-to-device (D2D) communication with the second user equipment, wherein the encrypted message represents a plaintext message that is encrypted by applying a cryptographic function to the plaintext message, a security key, and a first frame number of the first frame; and a processor to decrypt the encrypted message to recover the plaintext message using the cryptographic function, the security key, and the first frame number. - View Dependent Claims (11, 12, 13, 14, 15, 16)
-
-
17. An apparatus comprising:
-
a processor to determine a first frame number of a first frame received over an air interface between the first user equipment and a second user equipment during device-to-device (D2D) communication with the second user equipment, wherein the processor determines the first frame number based on a reference frame number stored by the first user equipment, a corresponding reference time stored by the first user equipment, and a current time, and wherein the processor is to decrypt information received by the first user equipment in the first frame using a cryptographic function that is applied to a security key and a first frame number of the first frame. - View Dependent Claims (18)
-
-
19. A non-transitory computer readable storage medium embodying a set of executable instructions, the set of executable instructions to manipulate at least one processor to:
receive an encrypted message at a first user equipment in a first frame over an air interface between the first user equipment and a second user equipment during device-to-device (D2D) communication with the second user equipment, wherein the encrypted message represents a plaintext message that is encrypted by applying a cryptographic function to the plaintext message, a security key, and a first frame number of the first frame. - View Dependent Claims (20, 21)
-
22. A non-transitory computer readable store medium embodying a set of executable instructions, the set of executable instructions to manipulate at least one processor to:
-
determine a first frame number of a first frame received over an air interface between the first user equipment and a second user equipment during device-to-device (D2D) communication with the second user equipment, wherein the first frame number is determined based on a reference frame number stored by the first user equipment, a corresponding reference time stored by the first user equipment, and a current time; and wherein the set of executable instructions is to manipulate the at least one processor to decrypt information received at the first user equipment in the first frame using a cryptographic function that is applied to a security key and a first frame number of the first frame.
-
Specification