Identity-based cryptosystems and signature schemes
Proceedings of CRYPTO 84 on Advances in cryptology
A method for obtaining digital signatures and public-key cryptosystems
Communications of the ACM
Using encryption for authentication in large networks of computers
Communications of the ACM
Cryptography and data security
Cryptography and data security
An Impersonation-Proof Identity Verfication Scheme
CRYPTO '87 A Conference on the Theory and Applications of Cryptographic Techniques on Advances in Cryptology
Key Distribution Systems Based on Identification Information
CRYPTO '87 A Conference on the Theory and Applications of Cryptographic Techniques on Advances in Cryptology
Identity-based Conference Key Distribution Systems
CRYPTO '87 A Conference on the Theory and Applications of Cryptographic Techniques on Advances in Cryptology
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Knowledge exchange and information access in a truly distributed network often require transmitting of data through open media. Consequently, data presented through such an environment are vulnerable to attacks. To minimize such vulnerability, data transformation or encryption/decryption techniques are often utilized among senders and receivers to achieve secure communication. Since data encryption/decryption requires sharing of a secret session key, finding an efficient way to distribute the session key in a large-scale, truly distributed network has been a nontrivial task. This paper presents a protocol for efficiently distributing session keys in such an environment to establish a secure channel. We assume the target network consists of many locally trusted centers, and each center has many users attached to it. The scheme incorporates the public-key distribution concept and the RSA encryption scheme as the basic mathematical tools, but eliminates the storage problem associated with huge public-key files. In addition, the proposed scheme has the added feature of providing the authenticate session key to the two parties in a secure communication.