Forward secure group signature scheme based on Chinese remainder theorem
Zhang Sha-bang · Journal of Computer Applications · 2011
A new forward secure group scheme based on Chinese Remainder Theorem(CRT) was proposed in this paper,while resolving revocation of membership and key exposure.The group center can safely add or remove members while keeping the secret keys of the other legitimate group members and the length of the group center's public key unchanged.When adding or removing a member only a simple exponentiation is needed.The security of the scheme was also analyzed.It is shown that the presented scheme has forward security,revocability,unforgeability,exculpability,coalition-resistance and other security which group signature requires.