"碰撞向量"," collision vector" "抗碰撞杂凑函数"," collision-resistant hash-function" "连语"," collocation" ... www.guandang.com|基于5个网页 2. 碰撞散列函数 ...所说的2个输入映射到1个输出,我们叫做“碰撞”;无碰撞散列函数(collision-resistant hash-function)要满足“找出能映射到同 …www....
The main one is how to extend a compression function to a full-fledged hash function in this new setting. We show that the classic Merkle-Damgrd method used in the standard setting fails for these weaker kinds of hash functions, and we present some new methods that work. Our main ...
from #2230 Ian Miers noticed that a pedersen hash is an exceptionally good application for this fast ECC. Pedersen hashes have been mentioned in papers spanning decades, but have been largely ignored due to inefficiency. However, in our ...
A signature scheme constructed according to the hash-andsign paradigm—hash the message and then sign the hash, symbolically σ(H(M))—is no more secure than the hash function H against a collisionfinding attack. Recent attacks on standard hash functions call the paradigm into quest...
Target Collision Resistant Hash Functiondoi:10.1007/978-1-4419-5906-5_1212Universal One-Way Hash Functions (UOWHF)Springer US
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 ...
Proof:Leth(x)be acollision resistanthash function. Define another hash functionh′(x)ash′(x)=...
The soundness of functions likedowncastrelies on the type_id of two different types never being equal. Currently, the type_id is a 128-bit hash of the full type identity, computed specifically via SipHash-1-3 with an all-zero key. This is not a strong enough hash function for this purpo...
A Collision-Resistant Rate-1 Double-Block-Length Hash Function We propose new double-block-length hash functions. Our approach for constructing collision-resistant double-block-length hash functions is to convert a blo... S Lucks - Dagstuhl Seminar 被引量: 0发表: 2007年 Simulation of Intrinsic...
但是实际上根据CRHF定义，如果一个函数是抗碰撞的，指的是任何多项式时间敌手，不能在多项式时间内，以不可忽略概率找到x1≠x2，且h(x1)=h(x2)，这样即为collision resistant。这代表可能存在不同输入但是对应相同输出，只要无法在多项式时间内以不可忽略概率找到即可满足条件。对于h'(x)，如果仅仅存在一组碰撞值...