NFC Forum announces new Specifications

Formerly a candidate specification, the adopted LLCP technical specification defines an OSI layer-2 protocol to support peer-to-peer communication between two NFC-enabled devices. This is essential for any NFC applications that involve bi-directional communications, such as the exchange of electronic business cards, the transfer of a Web URL from one phone to another, or the initiation of Bluetooth communications. The specification defines two service types, connectionless and connection-oriented, organized into three link service classes: connectionless service only; connection-oriented service only; and both connectionless and connection-oriented service. The connectionless service offers minimal setup with no reliability or flow-control guarantees (deferring these issues to applications and to the reliability guarantees offered by ISO/IEC 18092 and ISO/IEC 14443 MAC layers). The connection-oriented service adds, in-order, reliable delivery, flow-control, and session-based service layer multiplexing. LLCP is a compact protocol, based on the industry standard IEEE 802.2, designed to support either small applications with limited data transport requirements, such as minor file transfers, or network protocols, such as OBEX and TCP/IP, which in turn provide a more robust service environment for applications. The NFC LLCP thus delivers a solid foundation for peer-to-peer applications, enhancing the basic functionality offered by ISO/IEC 18092, but without impacting the interoperability of legacy NFC applications or chipsets. The adopted LLCP specification has only minor changes from the candidate version. The Signature RTD candidate technical specification helps users verify the authenticity and integrity of data within NDEF messages by specifying the format to be used when signing single or multiple NDEF records. It defines the required and optional signature RTD fields, and also provides a list of suitable signature algorithms and certificate types that can be used to create the signature. It does not define or mandate a specific Public Key Infrastructure (PKI) or certification system, nor does it define a new algorithm for use with the Signature RTD. „“For NFC to succeed globally, it is essential to provide a means to verify the authenticity of data in NDEF messages and to ensure smooth interoperability with earlier NFC implementations and existing contactless infrastructure,““ said Koichi Tagawa, chairman of the NFC Forum. „“These two specifications provide these capabilities, giving NFC developers both the tools and the confidence to create solutions that can succeed globally.““ The Signature RTD specification remains a candidate for final release pending feedback from NFC Forum members and other standards organizations. By releasing candidate specifications, the NFC Forum enables organizations in the NFC ecosystem to begin integrating them into their own work. This gives both NFC Forum members and other standards organizations an opportunity to accelerate their development and provide valuable feedback that can be incorporated into the final specifications. Once the feedback has been evaluated and integrated, the Signature RTD specification will be officially adopted and released by the NFC Forum. www.nfc-forum.org 

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