[PDF] Top 20 Bad directions in cryptographic hash functions

... password-hashing functions handle a practically unlimited number of input bits with negligible slowdowns; fit obfuscated passwords into far fewer bits (a small constant times the target security level); allow the ... See full document

... Our model is general enough to cover practically all differential known-key attacks in literature, such as latest results based on the rebound attack [12, 22, 28, 38, 52, 53, 56] and on the boomerang attack ... See full document

... Universal hash functions (UHFs) have been extensively used in the design of cryptographic ...universal hash function, which is a natural extension to almost universal hash function in ... See full document

... property-preserving hash guarantees that close inputs (facial images) remain close when hashed [DORS08]; this ensures that small changes in ones appearance do not affect whether or not that person is au- ... See full document

... Work on tolerating leakages was initiated by Rivest and Boyko [21,22] in the context of increasing the cost of brute-force attacks on block ciphers and effi- ciency issues. Then exposure-resilient cryptography [23,24,25] ... See full document

... SHA-2 hash function that the proposed architecture is based on, ensures high security level, in the implementation of this authentication scheme Hash function 2 are cryptographic algorithms that take ... See full document

... on hash functions has dramatically increased, because of new attacks, mainly on MD hash functions ...of cryptographic community was fixed on so called dedicated hash func- tions, ... See full document

... ing cryptographic properties that provide a successful immunization against all types of backdoors in hash ...the hash function design implicitly needs to embed a tedious public-key scheme and makes ... See full document

... marked functions and if they reveal functions whose format is different from that of original functions, then we can decide that they are suspicious ... See full document

... Cryptographic hash functions are the workhorses of ...the hash function literature is how to formally argue about the security of a hash function without the presence of keys ...keyless ... See full document

... proposed hash function has been imple- mented using Microsoft Visual C ++ , while performance’s experiments were performed us- ing an Intel Core i5 ( ...the hash function and the widely used ones ... See full document

... read hash codes (or chain values) from the peripheral (also using ...library functions such as printf, scanf can also be utilized; the Nios II Build tools communicate with the processor in the FPGA through ... See full document

... Keying Hash Functions for Message Authentication Paper published in 1996 Advances in Cryptology { Crypto 96 Proceedings,Lecture Notes in Computer Science ... See full document

... secure hash function is a hash function in which finding collisions is efficiently reducible from a computationally hard ...secure hash functions were based on number theoretic problems such ... See full document

... Standard (DES). In this standard, static AFTs known as Known Answer Tests (KATs) were provided in order to “fully exercise the non-linear substitution ta- bles” (S-boxes), whereas MCTs contained “pseudorandom data to ... See full document

... dynamic, cryptographic, robust and string hashing ...for hash functions can be inadequate, a chain hashing technique comes into play where the hash functions are linked using external ... See full document

... keyed hash function may solve this issue to the vast ...or hash generation, then without knowing the actual key, the intruder or deceiver cannot create the new message or change the original ...for ... See full document

... Since their creation, MD5 and SHA-1 had become incredibly widely used hash functions, arguably the most widely used within the public domain. With the break of MD5 and a theoretical break of SHA-1 that was ... See full document

... Abstract— Hash functions are the most widespread among all cryptographic primitives, and are currently used in multiple cryptographic schemes and in security ...secure hash algorithm ... See full document

... used cryptographic hash func- tions ...the hash function is replaced by a non-standard value, which is the result of the ...other hash functions, such as RIPEMD and ... See full document