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A protocol for establishing secure communication channels in a large network

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2 Author(s)
Harn, L. ; Dept. of Comput. Sci. & Telecommun., Missouri Univ., Kansas City, MO, USA ; Huang, D.

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

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Knowledge and Data Engineering, IEEE Transactions on  (Volume:6 ,  Issue: 1 )