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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...
Semantic Security and Key-Privacy With Random Split of St-Gen Codes
Public Key Cryptography Code Based Cryptosystems Semantic Security
2016/3/1
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...