IACR Test-of-Time Awards

The IACR Test-of-Time Award is given annually for each one of the three IACR General Conferences (Eurocrypt, Crypto, and Asiacrypt). An award will be given at a conference for a paper which has had a lasting impact on the field and was published 15 years prior. More information about the Test-of-Time award can be found in the policy guidelines document.

The individual conferences CHES, TCC, and PKC each have their own Test-of-Time award for papers published at these conferences. These follow slightly different policies.

Award Recipients

2021 Recipients (for papers published in 2006)

From Eurocrypt 2006:
A provable-security treatment of the key-wrap problem, by Phillip Rogaway and Thomas Shrimpton
For placing the important real world primitive of key-wrapping on a solid theoretic foundation.
From Crypto 2006:
New proofs for NMAC and HMAC: Security without collision-resistance, by Mihir Bellare
For proving that the security of the widely deployed HMAC construction does not depend on the collision resistance of the underlying hash function.
From Asiacrypt 2006:
Simulation-sound NIZK proofs for a practical language and constant size group signatures, by Jens Groth
For constructing asymptotically optimal NIZK proofs and group signatures without using random oracles, and paving the way to practical constructions.

2020 Recipients (for papers published in 2005)

From Eurocrypt 2005:
Fuzzy Identity-Based Encryption , by Amit Sahai and Brent Waters
For laying the foundations of attribute-based encryption and other advanced notions of encryption.
From Crypto 2005:
Finding collisions in the full SHA-1 , by Xiaoyun Wang, Yiqun Lisa Yin and Hongbo Yu
For a breakthrough in the cryptanalysis of hash functions.
From Asiacrypt 2005:
Discrete-Log-Based Signatures May Not Be Equivalent to Discrete Log, by Pascal Paillier and Damien Vergnaud
For developing a new meta-reduction approach in the security proof of cryptosystems

2019 Recipients (for papers published in 2004)

From Eurocrypt 2004:
Fuzzy Extractors: How to Generate Strong Keys from Biometrics and Other Noisy Data , by Yevgeniy Dodis, Leonid Reyzin, Adam D. Smith
For introducing new techniques for entropy extraction from noisy data.
The full version of this Eurocrypt 2004 paper was later published in the SIAM Journal on Computing, 38 (1), 97-139, 2008 , together with Rafail Ostrovsky as an additional author. The authors gratefully acknowledge his contribution to their joint work.
From Crypto 2004:
Multicollisions in Iterated Hash Functions. Application to Cascaded Constructions , by Antoine Joux
For the development of an important attack on a widely-used class of collision resistant hash functions.
From Asiacrypt 2004:
How Far Can We Go Beyond Linear Cryptanalysis? , by Thomas Baignères, Pascal Junod, Serge Vaudenay
For introducing new techniques in linear cryptanalysis of block ciphers.


Nominations are welcomed by the selection committee, although a paper need not be nominated to win an award. Nominations for the 2020 award (for papers published in 2005) will be accepted until Feb 15, 2020.

Nominations for 2020 are closed

For the 2020 award, papers published in the 3 IACR General Conferences of 2005 are eligible. The proceedings of these conferences can be found here:

Selection Committee (2020)

The selection committee in any year includes two members appointed by the IACR Board of Directors, and three program chairs of the current year's IACR general conferences as ex-officio members.

Contact information

The chair of the Selection Committee can be reached by email at .