摘要:
A means for determining a channel for communication in a wireless communication system is provided. A method includes receiving one or more sub-frames of a beacon signal on a beaconing channel until a legitimacy condition of the beacon signal is met. The beacon signal is transmitted by a beaconing device. The method further includes determining a suitability of the channel for communication in the wireless communication system based on the legitimacy condition.
摘要:
Apparatus in form of a microelectronic assembly including an integrated circuit (IC) for execution of an embedded modular exponentiation program utilizing a square-and-multiply algorithm, wherein in the modular exponentiation program a secret exponent having a plurality of bits characterizes a private key, a method of providing a digital signature to prevent the detection of the secret exponent when monitoring power variations during the IC execution, the method comprising the steps of for a first operation in the modular exponentiation, selecting at least one predetermined bit, wherein the at least one predetermined bit is a bit other than a least significant bit (LSB) and the most significant bit (MSB); using the square-and-multiply algorithm, sequentially selecting bits to the left of the at least one predetermined bit for exponentiation until the MSB is selected; subsequent to selecting the MSB, sequentially selecting bits to the right of the at least one predetermined bit for exponentiation until the LSB is selected.
摘要:
A system and method for secure communications in a communication system, wherein the system programs a computer to perform the method, which includes: receiving at least one authentication key, without an encryption key, from a key-management server; receiving a packet, which is encrypted, from a source device; authenticating the packet, using the at least one authentication key, without cryptographically altering the packet; and forwarding the authenticated packet to a destination device of the packet.
摘要:
A key message can include a key-encryption-key (KEK) associated with a KeyDomainID and a KeyGroupID. A session description message can describe streaming media initialization parameters containing media stream information for one or more media streams. For each media stream, the media stream information can include an IP address and a data port. The session description message can further contain a linkage for binding the KEK to a corresponding one of the media streams. The linkage can include the KeyDomainID and KeyGroupID or can include an abstract representation of the KeyDomainID and KeyGroupID. During session initialization, the key-encryption-key (KEK) can be bound to the media streams using the linkage of the session description message. Each of the media streams can be secured using a traffic key conveyed to user equipment (UE) under protection of the key-encryption-key (KEK).
摘要:
A communications device (300) enabled to support both external voice communications functionality (301) (or other external communications of interest and choice) and other functionality (302) has at least a first and second mode of operation (304 and 305). The first mode of operation permits essentially all functionality while the second mode of operation precludes at least much of the other functionality in favor of preserving the viability of at least some of the external communications functionality. A selector (306) can select a given mode of operation based, at least in part, on a trigger 307 comprising, for example, a user input and/or detection of a condition of concern.
摘要:
A device (110) performs a method 200 for authentication and Ad Hoc network setup. The device (110) receives (210) a first security configuration; receives (220) a second security configuration based on location; authenticates (230) at least a second node (110) having the first security configuration and the second security configuration; and forms (240) a network with the at least a second node (110).
摘要:
A scrambling method (510) divides a set of data (200) into a first portion and a second portion. A first scrambling method is performed on the first portion of the set of data to create a scrambled first portion of the data. The second portion of the set of data is modified with the scrambled first portion of the set of data to create a modified second portion of the set of data. A second scrambling method is performed on the modified second portion of the set of data to create a scrambled second portion of the set of data. The scrambled first portion of the set of data is modified with the scrambled second portion of the set of data to create a scrambled set of data (220). A descrambling method (520) reverses the scrambling method (510) to create a descrambed set of data (200).
摘要:
An apparatus and method for preventing information leakage attacks on a microelectronic assembly is described for performing a cryptographic algorithm by transforming a first function, used by the cryptographic algorithm, into a second function. The method includes receiving (1102) a masked input data having n number of bits that is masked with an input mask, wherein n is a first predetermined integer. The method also includes processing (1104) the masked input data using a second function based on a predetermined masking scheme, and producing (1106) a masked output data having m number of bits that is masked with an output mask, wherein m is a second predetermined integer.