In 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 to a preimage attack where a specific target hash value is specified. See more

Many applications of cryptographic hash functions do not rely on collision resistance, thus collision attacks do not affect their security. For example, See more

• "Meaningful Collisions", attack scenarios for exploiting cryptographic hash collisions
• Fast MD5 and MD4 Collision Generators - Bishop Fox (formerly Stach & Liu). Create MD4 and MD5 … See more

Much like symmetric-key ciphers are vulnerable to brute force attacks, every cryptographic hash function is inherently vulnerable to … See more

An extension of the collision attack is the chosen-prefix collision attack, which is specific to Merkle–Damgård hash functions. In this case, the … See more

• Puzzle friendliness See more