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Formalizing human ignorance: Collisionresistant hashing without the keys
 In Proc. Vietcrypt ’06
, 2006
"... Abstract. There is a foundational problem involving collisionresistant hashfunctions: common constructions are keyless, but formal definitions are keyed. The discrepancy stems from the fact that a function H: {0, 1} ∗ → {0, 1} n always admits an efficient collisionfinding algorithm, it’s just t ..."
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Cited by 24 (0 self)
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Abstract. There is a foundational problem involving collisionresistant hashfunctions: common constructions are keyless, but formal definitions are keyed. The discrepancy stems from the fact that a function H: {0, 1} ∗ → {0, 1} n always admits an efficient collisionfinding algorithm, it’s just
New proofs for NMAC and HMAC: Security without collisionresistance
, 2006
"... HMAC was proved in [3] to be a PRF assuming that (1) the underlying compression function is a PRF, and (2) the iterated hash function is weakly collisionresistant. However, recent attacks show that assumption (2) is false for MD5 and SHA1, removing the proofbased support for HMAC in these cases. ..."
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Cited by 113 (9 self)
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HMAC was proved in [3] to be a PRF assuming that (1) the underlying compression function is a PRF, and (2) the iterated hash function is weakly collisionresistant. However, recent attacks show that assumption (2) is false for MD5 and SHA1, removing the proofbased support for HMAC in these cases
full version. CollisionResistant Hashing: Towards Making UOWHFs Practical
, 1997
"... Recent attacks on the cryptographic hash functions MD4 and MD5 make it clear that (strong) collisionresistance is a hardtoachievegoal. Welooktowards a weaker notion, the universal oneway hash functions (UOWHFs) of Naor and Yung, and investigate their practical potential. The goal is to build UOWH ..."
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Cited by 1 (0 self)
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Recent attacks on the cryptographic hash functions MD4 and MD5 make it clear that (strong) collisionresistance is a hardtoachievegoal. Welooktowards a weaker notion, the universal oneway hash functions (UOWHFs) of Naor and Yung, and investigate their practical potential. The goal is to build
Graphbased algorithms for Boolean function manipulation
 IEEE TRANSACTIONS ON COMPUTERS
, 1986
"... In this paper we present a new data structure for representing Boolean functions and an associated set of manipulation algorithms. Functions are represented by directed, acyclic graphs in a manner similar to the representations introduced by Lee [1] and Akers [2], but with further restrictions on th ..."
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Cited by 3499 (47 self)
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In this paper we present a new data structure for representing Boolean functions and an associated set of manipulation algorithms. Functions are represented by directed, acyclic graphs in a manner similar to the representations introduced by Lee [1] and Akers [2], but with further restrictions
CollisionResistant No More: HashandSign Paradigm Revisited
 In 9th International Workshop on Practice and Theory in Public Key Cryptography, PKC 2006
"... Abstract. A signature scheme constructed according to the hashandsign 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 question. It is ..."
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Cited by 5 (0 self)
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. It is well known that a simple modification of the hashandsign paradigm may replace the collisionresistant hash with a weaker primitive—a targetcollision resistant hash function (also known as a universal oneway hash, UOWHF). The signer generates a random key k and outputs the pair (k, σ(kHk(M))) as a
Formalizing Human Ignorance: CollisionResistant Hashing without the Keys
, 2007
"... Abstract. There is a foundational problem involving collisionresistant hashfunctions: common constructions are keyless, but formal definitions are keyed. The discrepancy stems from the fact that a function H: {0, 1} * ! {0, 1}n always admits an efficient collisionfinding algorithm,it's just ..."
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Abstract. There is a foundational problem involving collisionresistant hashfunctions: common constructions are keyless, but formal definitions are keyed. The discrepancy stems from the fact that a function H: {0, 1} * ! {0, 1}n always admits an efficient collisionfinding algorithm
Consistent hashing and random trees: Distributed caching protocols for relieving hot spots on the World Wide Web
 IN PROC. 29TH ACM SYMPOSIUM ON THEORY OF COMPUTING (STOC
, 1997
"... We describe a family of caching protocols for distributed networks that can be used to decrease or eliminate the occurrence of hot spots in the network. Our protocols are particularly designed for use with very large networks such as the Internet, where delays caused by hot spots can be severe, and ..."
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Cited by 701 (11 self)
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of existing resources, and scale gracefully as the network grows. Our caching protocols are based on a special kind of hashing that we call consistent hashing. Roughly speaking, a consistent hash function is one which changes minimally as the range of the function changes. Through the development of good
Monads for functional programming
, 1995
"... The use of monads to structure functional programs is described. Monads provide a convenient framework for simulating effects found in other languages, such as global state, exception handling, output, or nondeterminism. Three case studies are looked at in detail: how monads ease the modification o ..."
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Cited by 1481 (39 self)
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The use of monads to structure functional programs is described. Monads provide a convenient framework for simulating effects found in other languages, such as global state, exception handling, output, or nondeterminism. Three case studies are looked at in detail: how monads ease the modification
PseudoRandom Generation from OneWay Functions
 PROC. 20TH STOC
, 1988
"... Pseudorandom generators are fundamental to many theoretical and applied aspects of computing. We show howto construct a pseudorandom generator from any oneway function. Since it is easy to construct a oneway function from a pseudorandom generator, this result shows that there is a pseudorandom gene ..."
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Cited by 887 (22 self)
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Pseudorandom generators are fundamental to many theoretical and applied aspects of computing. We show howto construct a pseudorandom generator from any oneway function. Since it is easy to construct a oneway function from a pseudorandom generator, this result shows that there is a pseudorandom
Universal OneWay Hash Functions and their Cryptographic Applications
, 1989
"... We define a Universal OneWay Hash Function family, a new primitive which enables the compression of elements in the function domain. The main property of this primitive is that given an element x in the domain, it is computationally hard to find a different domain element which collides with x. We ..."
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Cited by 357 (15 self)
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prove constructively that universal oneway hash functions exist if any 11 oneway functions exist. Among the various applications of the primitive is a OneWay based Secure Digital Signature Scheme which is existentially secure against adoptive attacks. Previously, all provably secure signature
Results 11  20
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