Theory Collision resistance is related tosecond preimage resistance, which is also known as weak collision resistance. A minimal requirement for a hash function to be collision resistant is that the length of its result should be 192 bits (in 2011). Collision resistance is the defining property o...
Multi-collision resistance seems to be a qualitatively weaker property than standard collision resistance. Nevertheless, in this work we show a non-blackbox transformation of any moderately shrinking t- MCRH , for t ∈ { 3 , 4 } , into an (infinitely often secure) CRH . This transformation...
Collisionresistance HMAC:aMACfromSHA-256 DanBoneh TheMerkle-Damgarditeratedconstruction m[0]m[1]m[2]m[3]llPB IV(fixed)h h h h H(m)Thm:hcollisionresistant⇒Hcollisionresistant CanweuseH(.)todirectlybuildaMAC?DanBoneh MACfromaMerkle-DamgardHashFunction H:X≤L⟶TaC.R.Merkle-DamgardHash...
but have been largely ignored due to inefficiency. However, in our case they are perfect. Inside the circuit they are very competitive with MiMC (a hash function submitted to Asiacrypt last year) except that a pedersen hash has collision resistance that reduces to discrete log -- far more bel...
If x* does NOT fall on either of the special values, because of the collsion resistance of h(...
A signature scheme constructed according to the hash-and-sign paradigm-hash the message and then sign the hash, symbolically σ(H(M))-is no more secure than the hash function H against a collision-finding attack. Recent attacks on standard hash functions call the paradigm into question. It ...
来自 Springer 喜欢 0 阅读量: 213 作者: B Preneel 摘要: Strong collision resistance; Universal One-Way Hash Functions (UOWHF) Hash Functions; One-Way Function; Preimage Resistance; Second Preimage Resistance; Universal One-Way Hash Function Collision... DOI: 10.1007/978-1-4419-5906-5_565 ...
and: We should do one of the following: switch to a stronger hash function, or switch to a different scheme that doesn't rely on collision-resistance of the hash function. Discussedon Zulipduring triage meeting. About this issue This issue corresponds to a meeting proposal for the compiler ...
The design principle of Merkle-Damg ard construction is collision resistance of the compres- sion function implies collision resistance of the hash function. Recently multi-block collisions have been found on the hash functions MD5, SHA-0 and SHA-1 using differential cryptanalysis. These multi-bloc...
hash functions that provide what you determine to be an acceptable trade-off between speed and collision resistance. This seed approach has been considered by several software projects, including Lua (http://thread.gmane.org/gmane.comp.lang.lua.general/87491) and libxml2 (http://git.gnome....