A new scheme for ID-based cryptosystem and signature

A novel ID-based cryptographic scheme for implementing a public-key cryptosystem and signature is proposed. Instead of generating and publishing a public key for each user, the ID-based scheme permits each user to choose his/her name or network address as his/her public key. This eliminates the needs of a large public field and the exchange of private or public keys. The major advantage of the ID-based cryptosystem based on this scheme over other published ID-based cryptosystems is that the number of users can be extended to t×L users without degrading the system´s security even when users conspire, where L is the number of the system´s secrets, and t is the number of factors in p-1, where p is a large prime number