[PDF] Top 20 Related Randomness Attacks for Public Key Encryption

... that randomness failures of var- ious kinds are endemic in deployed cryptographic ...a public key encryption scheme to reuse random values, and functions of those values, in encryp- tion ... See full document

... the public key. The source will be responsible for producing a PRF key fk, whose length is independent of the public key, and will leak it along with some other ... See full document

... by just leaking a single group element, thus reducing tampering to leakage. We use sim- ilar ideas as above and show that the BHHO cryptosystem with appropriate parameters satisfy our entropic restricted notion of ... See full document

... post-quantum public-key en- cryption scheme whose security depends on a problem arising from a multivariate non-linear indeterminate ...improved attacks for the underlying problems have recently been ... See full document

... The encryption phase is conducted as ...a key-agreement protocol to share a random string between them so that the shared string will be uniformly random if at least one of them chooses good one in the ... See full document

... Now we turn to HN-IND security of NtD. According to Theorem 3, what remains is to construct a (unique-ciphertext) standard-model D- PKE scheme achieving adaptively CCA security. Considering IND-CDA2 security in the ... See full document

... an encryption system is formally established through the properties of an abstract game played between a challenger and an ...the related responses and have them at his disposal to effect a ...ask ... See full document

... Other related works. The notions of key-dependent message security (aka circular security) and related-key attacks were introduced by [16, 10] and ...under related-key ... See full document

... authenticated key exchange (PAKE) protocols allow users to establish a secure channel over a public, possibly adversarially controlled, network, with the help of a simple ...IND-CCA encryption ... See full document

... Non-Malleable Key Derivation Function (NM-KDF) for tampering function family F , which uses randomness x to derive y = f (x) in such a way that, even x is tampered to a different value x = φ(x), y = f (x ) ... See full document

... In this paper, we consider two such specialized notions of security for SKE schemes in a combined fashion. In particular, we will derive SKE schemes that are secure in the presence of key-dependent messages ... See full document

... With the rapid development of cloud computing technology, a large amount of data now has been stored onto the cloud. Since the data owner loses its control of the data, several security and privacy issues arise in cloud ... See full document

... opening attacks (SOA) concern a multi-user scenario, where an adversary breaks into a subset of honestly created ciphertexts and tries to learn information on the plaintexts of some unopened (but potentially ... See full document

... probabilistic encryption schemes, using weak randomness can lead to catastrophic attacks in particular when the used randomness has little or even no ...ElGamal encryption scheme ... See full document

... required randomness, is a complex and difficult task, and several examples of RNGs failing in practice are known [23, 24, 26, 27, ...of attacks made possible by randomness failures are many ...signing ... See full document

... Φ-restricted related key attack-secure PRF (RKA-PRF) can be used to build a RRA-secure PKE scheme for Φ-restricted adversaries, thus transferring security from the RKA setting for PRFs to the RRA setting ... See full document

... ECC. Public- key cryptography, refers to a cryptographic algo which requires two separate keys, one of which is secret (or private) and one of which is ...this key pair are mathematically linked. The ... See full document

... The main motivation of deniable encryption is coercion resistance. A powerful adversary may demand secret key and encryption randomness for the intercepted communication. In various countries, ... See full document

... Public-key encryption schemes rely for their IND-CPA security on per-message fresh ...practice, randomness may be of poor quality for a variety of reasons, leading to failure of the ... See full document

... time attacks then this requires the public keys as well as the ciphertexts to be of size at least Ω(t 2 ), even when encrypting a single ...known attacks on the schemes of Regev and GPV, using ... See full document