基于Rabin加密算法的密钥托管体制

A key escrow system based on Rabin encryption algorithm

密钥托管密码体制不仅能保护用户的隐私权，同时允许法律授权下的监听．该文基于Ｒａｂｉｎ加密算法，提出了一种新的密钥托管方案．用户按Ｒａｂｉｎ加密算法加密自己的密钥，Ｒａｂｉｎ加密算法的秘密密钥由可信中心产生，并按中国剩余定理分配给两个委托人，当且仅当两个委托人联合起来，才能得到Ｒａｂｉｎ加密算法的秘密密钥，从而得到用户的密钥．

A key escrow cryptosystem can not only provide protection for users privacy, but also allow for the wiretapping when lawfully authorized. In this paper, a key escrow system based on Rabin encryption algorithm is given. A user encrypts his secret key by Rabin encryption algorithm. The secret keys for Rabin algorithm are generated and distributed to two trustees on the Chinese remainder theorem by a trusted center. If and only if two trustees are united can the secret keys for Rabin algorithm and further the users secret key be derived.