(Recall that in a sense, the reason why the lossy encryption paradigm does not mesh well with SO-CCA security is that lossy encryption only pro- vides a handle to turn all

In the IND-ID-CCA security game of the ex- tractable 1SPO-IBE scheme, B is given a public parameter, and also is provided with an encryp- tion oracle for challenge ciphertext, a

proposed the first sender equivocable encryption scheme secure against chosen-ciphertext attack (NC-CCA) and proved that NC-CCA security implies secu- rity against selective

Our first construction, which is constructed from an IND-RSO- CPA secure scheme, an IND-CCA secure scheme, an appropriate NIZK and a one-time signature, is inspired by the paradigm

Keywords: simulation-based security, selective opening security for receivers, chosen-ciphertext attacks, public-key encryption, identity-based encryption..

Informally, a public-key encryption scheme is lossy if there is an efficient alternate key generation algorithm (called the “lossy key generation algorithm”) that produces

In this letter, based on the Gap bilinear Diffie-Hellman problem, we would like to use another padding technique [4] to propose a new ID-based encryption scheme secure against

In Section 9.5, we study two ex- amples of public-key encryption schemes which are secure against adaptively- chosen-ciphertext attacks, and their security proofs.. One of the

Kurosawa-Desmedt encryption scheme is a variation of Cramer- Shoup encryption schemes, which are the first practical schemes secure against adaptive chosen ciphertext attack in

We call it LoR, which is short for “Linear or Random” to represent the fact that in our scheme the encryption of a 0 consists of five group elements whose relationship is similar

(Briefly, we cannot make the encryption undetectably lossy on all challenge identities because the adversary has an Extract oracle and we wish to achieve full, not selective-id

Table 7-18: Illustrative Strategy to Attain 0.079 ppm: Estimated Annual Reductions in the Incidence of Premature Mortality Associated with Ozone Exposure in 2020 (Incremental

Here we only focus on IBKEMs, since, even in the multi-instance, multi-challenge setting, a constrained CCA (resp. CPA) secure IBKEM can be transformed to a CCA (resp. CPA)

The homomorphic property ensures that the cryptosystems cannot be secure against adaptive chosen ciphertext attacks, since given the encryption of c , the attacker can modify

Using a public key scheme secure against adaptive chosen ciphertext attacks such as RSA-OAEP [27] together with unauthenticated encryption would be one of the most ironic

Richer and more advanced lattice-based cryptographic schemes, including chosen ciphertext-secure encryption, “hash-and-sign” digital signatures, and identity-based encryption

And our scheme is also very simple and its security is based on the EF-AGCD assumption, an assumption which was used in the context of fully homomorphic encryption schemes

To fill this gap, Libert and Vergnaud [11] presented the first construction of unidirectional proxy re-encryption scheme with chosen ciphertext security in the