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"Cryptanalyses and improvements of two cryptographic key assignment schemes ..."
Chien-Lung Hsu, Tzong-Sun Wu (2003)
- Chien-Lung Hsu, Tzong-Sun Wu:
Cryptanalyses and improvements of two cryptographic key assignment schemes for dynamic access control in a user hierarchy. Comput. Secur. 22(5): 453-456 (2003)

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