摘要
利用对称密码体制和Shamir门限方案,构造了门限解密方案。该门限方案要分享的密钥为加密阶段用的对称密钥,可信中心设为加密者。该方案使接收群体成员中只有大于门限值的成员共同计算才能得到密钥,降低成员欺骗的可能性。
Uses symmetric cryptosystem and Shamir threshold scheme to construct a threshold decryption scheme. The sharing key in this threshold scheme is the symmetric key which is used in encryption, and the trusted center is the encryptor. This scheme requests that the members of the receiver have to be bigger than the threshold value, otherwise they cannot get the key. That will decrease the possibility of participant cheating.
出处
《现代计算机》
2008年第9期18-19,共2页
Modern Computer
基金
韩山师范学院青年科学基金资助项目
关键词
对称密码体制
门限解密
门限方案
可信中心
Symmetric Cryptosystem
Threshold Decryption
Threshold Scheme
Trusted Center
