Name
Abstract | ||
|---|---|---|
At the Cryptographic Hash Workshop hosted by NIST in 2005, Lee et al. proposed the DHA-256 (Double Hash Algorithm-256) hash function. The design of DHA-256 builds upon the design of SHA-256, but introduces additional strengthening features such as optimizing the message expansion and step function against local collision attacks. Previously, DHA-256 was analyzed by J. Zhong and X. Lai, who presented a preimage attack on 35 steps of the compression function with complexity 2^2^3^9^.^6. In addition, the IAIK Krypto Group provided evidence that there exists a 9-step local collision for the DHA-256 compression function with probability higher than previously predicted. In this paper, we analyze DHA-256 in the context of higher order differential attacks. In particular, we provide a practical distinguisher for 42 out of 64 steps and give an example of a colliding quartet to validate our results. |
Year | DOI | Venue |
|---|---|---|
2013 | 10.1016/j.ipl.2013.07.015 | Inf. Process. Lett. |
Keywords | Field | DocType |
hash function,local collision attack,cryptographic hash workshop,step function,iaik krypto group,order collision,dha-256 hash function,compression function,9-step local collision,hash algorithm-256,higher order differential attack,dha-256 compression function,hash functions,cryptography,boomerang attack,cryptanalysis | SHA-2,Cryptographic hash function,Collision resistance,Theoretical computer science,Hash function,Hash chain,Preimage attack,Collision attack,Mathematics,MDC-2 | Journal |
Volume | Issue | ISSN |
113 | 19-21 | 0020-0190 |
Citations | PageRank | References |
1 | 0.35 | 17 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Riham Altawy | 1 | 81 | 9.95 |
| Aleksandar Kircanski | 2 | 37 | 5.57 |
| Amr Youssef | 3 | 238 | 29.69 |