Modification of Rao-Nam''''s Private-Key Cryptosystem
Rao-Nam私钥密码体制的修正

A new kind of algorithm is proposed which can produce random error vector without looking up the syndrome-error table. An error vector with larger Hamming weight can be produced by mixing a part of the original error vector with the plaintext. A modified Rao-Nam scheme based on the new algorithm is presented, which requires no storage for random error vector. The scheme is efficient and practical, and offers a much higher security level.