Yi-Ru Liu

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In this paper we propose two public key BE schemes that have efficient complexity measures. The first scheme, called the PBE-PI scheme, has O(r) header size, O(1) public keys and O(log N) private keys per user, where r is the number of revoked users. This is the first public key BE scheme that has both public and private keys under O(log N) while the header(More)
In this paper we propose three public key BE schemes that have efficient complexity measures. The first scheme, called the BE-PI scheme, has O(r) header size, O(1) public keys and O(log N) private keys per user, where r is the number of revoked users. This is the first public key BE scheme that has both public and private keys under O(log N) while the(More)
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