센서 네트워크 상에서의 암호화 알고리즘 TinyECC 성능개선

TinyECC is a well known software which provide ECC-based PKC(public key cryptography) operations that is adapted to sensor network applications. However, TinyECC need high-performance to execute the PKC over sensor which has limited performance. This is a problem to implement the TinyECC over sensor. To solve the problem, We improve the performance using assembly code and optimized technique.