{"references": ["David Gay, Philip Levis, Robert von Behren \"The nesC Language : A\nHolistic Approach to Networked Embedded Systems\" PLDI-03 June\n9-11", "Chris Karlof, Naveen Sastry, David Wagner \"TinySec : A Link Layer\nSecurity Architecture for Wireless sensor Networks\" SenSys-04\nNovember", "David J. Malan, Matt Welsh, Michael D. Smith \"A Public-Key\nInfrastructure for Key Distribution in TinyOS Based on Elliptic Curve\nCryptography\"", "Tieyan Li, Hongjun Wu, Xinkia Wang and Feng bao \"SenSec Design\"\nI2R Sensor Network Flagship Project : Technical Report-TR v1.0", "Ronald Watro, Derrick Kong,Sue-fen Cuti, Charles Gardiner, Charles\nLynn, Peter Kruus \" TinyPK : Securing Sensor Networks with Public Key\nTechnology\"", "Mihir Bellare, A. Desai, E. Jojipii, P. Rogaway. \"The security of the\ncipher block chaining message authentication code\" journal of Computer\nand System Sciences 61(3):362-399, December 2000", "FIPS PUBS 180-2 \" SECURE HASH STANDARD\" U.S DoC/NIST,\nAugest 1,2002", "FIPS PUBS #HMAC draft \"The Keyed-Hash Message Authentication\nCode\"", "\"TinyOS and nesC Tutorial\" http://www.tinyos.net/tinyos-1.x/doc/\n[10] Samuel R. Madden, Michael J. Franklin, Joseph M. Hellerstein, and Wei\nHong. \"TAG : A tiny aggregation service for ad-hoc sensor networks.\" In\nThe Fifth Symposium on Operatiing Systems Design and\nImplementation(OSDI 2002), 2002"]}

In recent years, it has been proposed security architecture for sensor network.[2][4]. One of these, TinySec by Chris Kalof, Naveen Sastry, David Wagner had proposed Link layer security architecture, considering some problems of sensor network. (i.e : energy, bandwidth, computation capability,etc). The TinySec employs CBC_mode of encryption and CBC-MAC for authentication based on SkipJack Block Cipher. Currently, This TinySec is incorporated in the TinyOS for sensor network security. This paper introduces TinyHash based on general hash algorithm. TinyHash is the module in order to replace parts of authentication and integrity in the TinySec. it implies that apply hash algorithm on TinySec architecture. For compatibility about TinySec, Components in TinyHash is constructed as similar structure of TinySec. And TinyHash implements the HMAC component for authentication and the Digest component for integrity of messages. Additionally, we define the some interfaces for service associated with hash algorithm.