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We consider so-called Toeplitz words which can be viewed as generalizations of one-way infinite periodic words. We compute their subword complexity , and show that they can always be generated by iterating periodically a finite number of morphisms. Moreover , we define a structural classification of Toeplitz words which is reflected in the way in which they(More)
In a multicast communication system, group members possess a common group key and communicate using the key, F0r the communication between group members the group key must be managed securely and efficiently. Especially in a dynamic and large group the efficiency of the group key management is critical since the size of deleted or added members may be quite(More)
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