TY - GEN
T1 - Secure identity-based encryption in the quantum random oracle model
AU - Zhandry, Mark
PY - 2012
Y1 - 2012
N2 - We give the first proof of security for an identity-based encryption scheme in the quantum random oracle model. This is the first proof of security for any scheme in this model that requires no additional assumptions. Our techniques are quite general and we use them to obtain security proofs for two random oracle hierarchical identity-based encryption schemes and a random oracle signature scheme, all of which have previously resisted quantum security proofs, even using additional assumptions. We also explain how to remove the extra assumptions from prior quantum random oracle model proofs. We accomplish these results by developing new tools for arguing that quantum algorithms cannot distinguish between two oracle distributions. Using a particular class of oracle distributions, so called semi-constant distributions, we argue that the aforementioned cryptosystems are secure against quantum adversaries.
AB - We give the first proof of security for an identity-based encryption scheme in the quantum random oracle model. This is the first proof of security for any scheme in this model that requires no additional assumptions. Our techniques are quite general and we use them to obtain security proofs for two random oracle hierarchical identity-based encryption schemes and a random oracle signature scheme, all of which have previously resisted quantum security proofs, even using additional assumptions. We also explain how to remove the extra assumptions from prior quantum random oracle model proofs. We accomplish these results by developing new tools for arguing that quantum algorithms cannot distinguish between two oracle distributions. Using a particular class of oracle distributions, so called semi-constant distributions, we argue that the aforementioned cryptosystems are secure against quantum adversaries.
KW - IBE
KW - Quantum
KW - Random Oracle
KW - Signatures
UR - http://www.scopus.com/inward/record.url?scp=84865498573&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84865498573&partnerID=8YFLogxK
U2 - 10.1007/978-3-642-32009-5_44
DO - 10.1007/978-3-642-32009-5_44
M3 - Conference contribution
AN - SCOPUS:84865498573
SN - 9783642320088
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 758
EP - 775
BT - Advances in Cryptology, CRYPTO 2012 - 32nd Annual Cryptology Conference, Proceedings
T2 - 32nd Annual International Cryptology Conference, CRYPTO 2012
Y2 - 19 August 2012 through 23 August 2012
ER -