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Common randomness in information theory and cryptography. I. Secret sharing

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2 Author(s)
R. Ahlswede ; Dept. of Math., Bielefeld Univ., Germany ; I. Csiszar

As the first part of a study of problems involving common randomness at distance locations, information-theoretic models of secret sharing (generating a common random key at two terminals, without letting an eavesdropper obtain information about this key) are considered. The concept of key-capacity is defined. Single-letter formulas of key-capacity are obtained for several models, and bounds to key-capacity are derived for other models

Published in:

IEEE Transactions on Information Theory  (Volume:39 ,  Issue: 4 )