Circular-Secure Encryption from Decision Diffie-Hellman (2009)
Dan Boneh, Shai Halevi, Mike Hamburg, Rafail Ostrovsky
Abstract. We describe a public-key encryption system that remains secure even encrypting messages that depend on the secret keys in use. In particular, it remains secure under a “key cycle ”...
Circular-Secure Encryption from Decision Diffie-Hellman (2008)
Dan Boneh, Shai Halevi, Mike Hamburg, Rafail Ostrovsky
Let E be a public-key encryption system and let (pk i, ski) be public/private key pairs for E for i = 0,..., n. A natural question is whether E remains secure once an adversary obtains an encryption...