Abstract: A method of increasing communication security may include receiving, from a first computer system at a second computer system, a Constrained Application Protocol (CoAP) message, wherein the CoAP message may include authentication data. Message validation may be performed based on the authentication data, wherein the performing message validation may include determining that the CoAP message is invalid if at least one condition is not met. The method may also include performing, if the CoAP message is valid, at least one operation associated with the CoAP message.

Abstract: An apparatus may include a communication interface configured to receive a first message including a first data portion and a second data portion, wherein the first data portion is associated with a security token, wherein the first data portion includes a first instance of a session key, and wherein the second data portion includes a second instance of the session key. The apparatus may also include a security component configured to perform message validation associated with the first message. The apparatus may further include a message generation component configured to generate, if the first message is valid, a second message including the first data portion. The communication interface may be configured to communicate, if the first message is valid, the second message.

Abstract: Authentication data may be generated and included in a Constrained Application Protocol (CoAP) message communicated from a first computer system to a second computer system. The authentication data may allow the second computer system to perform message validation for verifying the authenticity of the first computer system and/or the integrity of the CoAP message. And in one embodiment, where the CoAP message includes a nonce, security can be improved by allowing the second computer system to advantageously detect and/or act on a replay attack.

Abstract: A method of increasing communication security may include receiving, from a first computer system at a second computer system, a Constrained Application Protocol (CoAP) message, wherein the CoAP message may include authentication data. Message validation may be performed based on the authentication data, wherein the performing message validation may include determining that the CoAP message is invalid if at least one condition is not met. The method may also include performing, if the CoAP message is valid, at least one operation associated with the CoAP message.

Abstract: A system may include a first computer system and a second computer system. The first computer system may be configured to generate a Constrained Application Protocol (CoAP) message including authentication data and message data. The first computer system may be further configured to communicate the CoAP message for delivery to the second computer system. The second computer system may be configured to perform message validation based on the authentication data.

Abstract: An apparatus may include a communication interface configured to receive a first message including a first data portion and a second data portion, wherein the first data portion is associated with a security token, wherein the first data portion includes a first instance of a session key, and wherein the second data portion includes a second instance of the session key. The apparatus may also include a security component configured to perform message validation associated with the first message. The apparatus may further include a message generation component configured to generate, if the first message is valid, a second message including the first data portion. The communication interface may be configured to communicate, if the first message is valid, the second message.

Abstract: A method of increasing communication security may include receiving, at a first computer system, a first message including a first data portion and a second data portion, wherein the first data portion is associated with a security token, wherein the first data portion includes a first instance of a session key, and wherein the second data portion includes a second instance of the session key. The method may also include performing, at the first computer system, message validation associated with the first message. The method may further include generating, if the first message is valid, a second message including the first data portion. The method may also include communicating, if the first message is valid, the second message from the first computer system for delivery to a second computer system.

Abstract: A plurality of connections may be established between an accessory interface and a plurality of accessories. A connection between the accessory interface and a portable electronic device may also be established. A first set of messages may be communicated via the accessory interface between the portable electronic device and a first accessory of the plurality of accessories. A second set of messages may be communicated via the accessory interface between the portable electronic device and a second accessory of the plurality of accessories. The first and second sets of messages communicated between the portable electronic device and the accessory interface may be formatted in accordance with a data exchange pattern.