computer science, a hash collision or hash clash is when two distinct pieces of data in a hash table share the same hash value. The hash value in this case...

hash map. Most hash table designs employ an imperfect hash function. Hash collisions, where the hash function generates the same index for more than one...

the given hash value when one message is already known; finding any pair of different messages that yield the same hash value (a collision) is also infeasible:...

cryptography, a collision attack on a cryptographic hash tries to find two inputs producing the same hash value, i.e. a hash collision. This is in contrast...

The Secure Hash Algorithms are a family of cryptographic hash functions published by the National Institute of Standards and Technology (NIST) as a U.S...

cryptography, SHA-1 (Secure Hash Algorithm 1) is a hash function which takes an input and produces a 160-bit (20-byte) hash value known as a message digest...

cryptography, an HMAC (sometimes expanded as either keyed-hash message authentication code or hash-based message authentication code) is a specific type of...

is a widely used hash function producing a 128-bit hash value. MD5 was designed by Ronald Rivest in 1991 to replace an earlier hash function MD4, and...

output. The values returned by a hash function are called hash values, hash codes, hash digests, digests, or simply hashes. The values are usually used to...

resistance, collision resistance, and pseudo-randomness. Pre-image resistance: given a hash h, it should be hard to find any message m such that h = hash(m)....