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Proxy re-encryption (PRE) is a cryptographic primitive in which a proxy can transform Alice’s ciphertexts into ones decryptable by Bob. Key-private PRE specifies an additional level of security, requ...
Recently we have defined Staircase-Generator codes (St-Gen codes) and their variant with a random split of the generator matrix of the codes. One unique property of these codes is that they work wit...
The notion of key privacy for encryption schemes was defined formally by Bellare, Boldyreva, Desai and Pointcheval in Asiacrypt 2001. This notion seems useful in settings where anonymity is importan...
We define key privacy for IBE systems in terms of two properties, in- distinguishability under chosen identity attack, and indistinguishability under chosen key generator attack. Further, we show th...

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