A Practical Limit for the Validity Time of a Cipher System Base Key
Abou Kerisha, Y., Saleh, M. (1993). A Practical Limit for the Validity Time of a Cipher System Base Key. EKB Journal Management System, 5(ASAT CONFERENCE 4 - 6 May 1993, CAIRO), 439-454. doi: 10.21608/asat.1993.25646
Y. A. Abou Kerisha; M. N. Saleh. "A Practical Limit for the Validity Time of a Cipher System Base Key". EKB Journal Management System, 5, ASAT CONFERENCE 4 - 6 May 1993, CAIRO, 1993, 439-454. doi: 10.21608/asat.1993.25646
Abou Kerisha, Y., Saleh, M. (1993). 'A Practical Limit for the Validity Time of a Cipher System Base Key', EKB Journal Management System, 5(ASAT CONFERENCE 4 - 6 May 1993, CAIRO), pp. 439-454. doi: 10.21608/asat.1993.25646
Abou Kerisha, Y., Saleh, M. A Practical Limit for the Validity Time of a Cipher System Base Key. EKB Journal Management System, 1993; 5(ASAT CONFERENCE 4 - 6 May 1993, CAIRO): 439-454. doi: 10.21608/asat.1993.25646

A Practical Limit for the Validity Time of a Cipher System Base Key

International Conference on Aerospace Sciences and Aviation Technology
Article 37, Volume 5, ASAT CONFERENCE 4 - 6 May 1993, CAIRO, May 1993, Page 439-454  XML PDF (3 MB)
Document Type: Original Article
DOI: 10.21608/asat.1993.25646
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Authors
Y. A. Abou Kerisha1; M. N. Saleh2
1Armed Forces ,Signal Corps.
2Faculty of Engineering ,Ain Shams University.
Abstract
Key Management is a vital procedure for the appropriate performance of any cipher system. Of key management sub-items is the key change policy that arouses a quest about the limitations of time interval elapsed before necessitating the replacement of the secret base key. This paper discusses the problem of the base key validity time for two distinct cipher systems ;namely the straight forward(synchronous) and the cipher feedback(self-synchronous) stream cipher systems. Its result is depicted as a graph aiding to either choose number of bits for some key parameters in system design forgiven validity interval duration or to evaluate an already implemented system.
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