Rafael Dowsley

I am currently a second-year PhD student in the Computer Science and Engineering Department at the University of California at San Diego where I work in the Security and Cryptography Group under Professor Mihir Bellare.

Before coming to UCSD, I obtained my Master's degree in Electrical Engineering and my Bachelor's degree in Communication Networks Engineering from the University of Brasília (UnB), Brazil. My advisor was Professor Anderson C. A. Nascimento.

Contact:

rdowsley (at) cs (dot) ucsd (dot) edu

Curriculum Vitae PDF

Research Interests

Cryptography
Information Security
Information Theory
Theory of Computation

Papers

Standard Security Does Not Imply Security Against Selective-Opening. PDF
with Mihir Bellare, Brent Waters, Scott Yilek
To appear in Eurocrypt 2012.
Achieving Oblivious Transfer Capacity of Generalized Erasure Channel in the Malicious Model. PDF
with Kirill Morozov, Anderson C. A. Nascimento, Adriana C. B. Pinto
In: IEEE Transactions on Information Theory. Vol.57, No.8, pp.5566-5571. 2011.
Do You Know Where Your Cloud Files Are?
with Karyn Benson, Hovav Shacham
In Proceedings of the ACM Cloud Computing Security Workshop (CCSW) 2011. pp.73-82. 2011.
Oblivious Transfer Based on the McEliece Assumptions.
with Jeroen van de Graaf, Jörn Müller-Quade, Anderson C. A. Nascimento
To appear in: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences.
Universally Composable and Statistically Secure Verifiable Secret Sharing Scheme Based on Pre-Distributed Data. PDF
with Goichiro Hanaoka, Hideki Imai, Jörn Müller-Quade, Anderson C. A. Nascimento, Akira Otsuka
In: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences. Vol.E94-A, No.2, pp.725-734. 2011.
Public Key Encryption Schemes with Bounded CCA Security and Optimal Ciphertext Length Based on the CDH Assumption.
with Goichiro Hanaoka, Anderson C. A. Nascimento, Mayana Pereira
In: 13th Information Security Conference (ISC 2010). Boca Raton, Florida, United States, 2010.
Lecture Notes in Computer Science. Berlim: Springer Verlag, 2011. v. 6531. p. 299-306.
Round-Optimal Deniable Ring Authentication in the Presence of Big Brother.
with Goichiro Hanaoka, Hideki Imai, Anderson C. A. Nascimento
In: 11th International Workshop, WISA 2010, Jeju Island, Korea, August 24-26, 2010.
Lecture Notes in Computer Science. Berlim: Springer Verlag, 2011. v.6513. p. 307-321.
A Two- Party Protocol with Trusted Initializer for Computing the Inner Product. PDF
with Jeroen van de Graaf, Davidson Marques, Anderson C. A. Nascimento
In: 11th International Workshop, WISA 2010, Jeju Island, Korea, August 24-26, 2010.
Lecture Notes in Computer Science. Berlim: Springer Verlag, 2011. v.6513. p. 337-350.
Reducing the Ciphertext Size of Dolev-Dwork-Naor like Public Key Cryptosystems. PDF
with Goichiro Hanaoka, Hideki Imai, Anderson C. A. Nascimento
In: SBSEG 2010, Fortaleza, Brazil. 2010.
Proceedings of the 10th Brazilian Symposium on Information and Computer Systems Security, pp. 395-404. SBC, 2010.
A CCA2 Secure Public Key Encryption Scheme Based on the McEliece Assumptions in the Standard Model. PDF
with Jörn Müller-Quade, Anderson C. A. Nascimento
In: RSA Conference 2009, Cryptographers' Track (CT-RSA 2009), 2009, San Francisco.
Lecture Notes in Computer Science. Berlim: Springer Verlag, 2009. v. 5473. p. 240-251.
On the Possibility of Universally Composable Commitments Based on Noisy Channels.
with Jörn Müller-Quade, Anderson C. A. Nascimento
In: SBSEG 2008, Gramado, Brazil. 2008.
Proceedings of the 8th Brazilian Symposium on Information and Computer Systems Security, pp. 103-114. SBC, 2008.
Oblivious Transfer Based on the McEliece Assumptions. PDF
with Jeroen van de Graaf, Jörn Müller-Quade, Anderson C. A. Nascimento
In: International Conference on Information Theoretical Cryptography, 2008, Calgary.
Lecture Notes in Computer Science. Berlim : Springer Verlag, 2008. v. 5155. p. 107-117.
On the Composability of Statistically Secure Bit Commitments. PDF
with Jeroen van de Graaf, Jörn Müller-Quade, Anderson C. A. Nascimento
Manuscript. Available at Cryptology ePrint Archive 2008/457.
Information-Theoretically Secure Oblivious Polynomial Evaluation in the Commodity-Based Model. PDF
with Goichiro Hanaoka, Hideki Imai, Jörn Müller-Quade, Anderson C. A. Nascimento, Akira Otsuka, Rafael Tonicelli.
Manuscript. Available at Cryptology ePrint Archive 2009/270.