SHA-1 is a widely used 1995 NIST cryptographic hash function standard that was officially
deprecated by NIST in 2011 due to fundamental security weaknesses demonstrated in …

We provide a formal treatment of backdoored pseudorandom generators (PRGs). Here a
saboteur chooses a PRG instance for which she knows a trapdoor that allows prediction of …

We show that many symmetric cryptography primitives would not be less safe with
significantly fewer rounds. To support this claim, we review the cryptanalysis progress in the …

Many applications require trustworthy generation of public random numbers. It is shown how
this can be achieved using a hash function that is timed to be as slow as desired (sloth) …

Many applications require trustworthy generation of public random numbers. It is shown how
this can be achieved using a hash function that is timed to be as slow as desired (sloth) …

Inserting backdoors in encryption algorithms has long seemed like a very interesting, yet
difficult problem. Most attempts have been unsuccessful for symmetric-key primitives so far …

Revelations over the past couple of years highlight the importance of understanding
malicious and surreptitious weakening of cryptographic systems. We provide an overview of …

Security of cryptographic schemes is traditionally measured as the inability of resource-
constrained adversaries to violate a desired security goal. The security argument usually …

In August 2012, the Streebog hash function was selected as the new Russian cryptographic
hash standard (GOST R 34.11‐2012). In this study, the authors investigate the new standard …

The real-life incidents researched in academia have revealed that (possibly) state-level
efforts are made to camouflage the intentional flaws in the mathematical layer of an S-Box …