作者: Tanya Ignatenko , Milan Petkovic , Muhammad Asim
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摘要: A domain authority 13 for use in a hierarchy of authorities hierarchical cryptographic system. The comprises user secret key generator 21 generating based on and one or more attribute representations, to obtain associated with set attributes corresponding the wherein is parent root authorities, representations are independent hierarchy.A decrypter makes key. An encrypter generates ciphertext decryptable by decrypter.