Title :
The simple ideal cipher system
Author_Institution :
Siberian State Univ. of Telecommun. & Inf. Sci., Novosibirsk, Russia
Abstract :
It is well known in cryptography that it is easy to construct an unbreakable secret-key cipher system if a plaintext source generates letters which are independent and equiprobable even if the length of a key sequence is much less than the length of the message. In this paper, we suggest a new secret-key cipher system in which a message generated is transformed into two parts in such a way that the biggest part consists of independent and equiprobable bits and only this part is encrypted. The complexity of the method is exponentially less than that for other known methods
Keywords :
cryptography; encoding; coding time; complexity; cryptography; encrypted message length; ideal cipher system; independent equiprobable bits; key sequence length; plaintext source; secret-key cipher system; Cryptography;
Conference_Titel :
Information Theory, 2000. Proceedings. IEEE International Symposium on
Conference_Location :
Sorrento
Print_ISBN :
0-7803-5857-0
DOI :
10.1109/ISIT.2000.866538
