2 Research Scientists, Temasek Laboratories, National University of Singapore, Singapore
Temasek Laboratories at National University of Singapore, Singapore is seeking highly motivated professionals interested in conducting research in the area of cryptography.
Applicants are expected to have a PhD degree in Mathematics/Computer Science/Engineering and a strong background and experience in one or two of the following areas: stream ciphers, pseudorandom number generator, public-key cryptography (multivariate, leakage resilient, etc).
Preferred candidates are expected to be proficient in C/C++ language, a team worker and able to conduct independent research. Review of applications will start immediately and continue until positions are filled.
For application information, please visit http://www.temasek-lab.nus.edu.sg/career/career.php.
Sequential Aggregate Signatures, Multisignatures, and Verifiably Encrypted Signatures Without Random Oracles
Abstract We present the first aggregate signature, the first multisignature, and the first verifiably encrypted signature provably secure without random oracles. Our constructions derive from a novel application of a recent signature scheme due to Waters. Signatures in our aggregate signature scheme are sequentially constructed, but knowledge of the order in which messages were signed is not necessary for verification. The aggregate signatures obtained are shorter than Lysyanskaya et al.’s sequential aggregates and can be verified more efficiently than Boneh et al.’s aggregates. We also consider applications to secure routing and proxy signatures.
- Content Type Journal Article
- Pages 1-34
- DOI 10.1007/s00145-012-9126-5
- Steve Lu, Los Angeles, CA, USA
- Rafail Ostrovsky, Los Angeles, CA, USA
- Amit Sahai, Los Angeles, CA, USA
- Hovav Shacham, La Jolla, CA, USA
- Brent Waters, Austin, TX, USA
From: Fri, 22 Jun 2012 14:01:59 GMT
- Journal Journal of Cryptology
- Online ISSN 1432-1378
- Print ISSN 0933-2790