**Preimage-Angriff** — Urbild Angriffe (auch engl. preimage attack) sind Angriffe auf eine kryptologische Hashfunktion mit dem Ziel, zu einem gegebenen Hash einer unbekannten Nachricht (Erstes Urbild Angriff, auch engl. first preimage attack) oder zu einer gegebenen… … Deutsch Wikipedia

**Collision attack** — In cryptography, a collision attack on a cryptographic hash tries to find two arbitrary inputs that will produce the same hash value, i.e. a hash collision. In contrast to a preimage attack, neither the hash value nor one of the inputs is… … Wikipedia

**Correlation attack** — In cryptography, correlation attacks are a class of known plaintext attacks for breaking stream ciphers whose keystream is generated by combining the output of several linear feedback shift registers (called LFSRs for the rest of this article)… … Wikipedia

**One-way compression function** — In cryptography, a one way compression function is a function that transforms two fixed length inputs to an output of the same size as one of the inputs. The transformation is one way , meaning that it is difficult given a particular output to… … Wikipedia

**MD5** — General Designers Ronald Rivest First published April 1992 Series MD2, MD4, MD5, MD6 Detail Digest sizes 128 bits … Wikipedia

**Cryptographic hash function** — A cryptographic hash function (specifically, SHA 1) at work. Note that even small changes in the source input (here in the word over ) drastically change the resulting output, by the so called avalanche effect. A cryptographic hash function is a… … Wikipedia

**NIST hash function competition** — Cryptography portal The NIST hash function competition is an open competition held by the US National Institute of Standards and Technology for a new SHA 3 function to replace the older SHA 1 and SHA 2, which was formally announced in the Federal … Wikipedia

**MD4** — General Designers Ronald Rivest First published October 1990[1] Series MD2, MD4, MD5, MD6 Detail Dige … Wikipedia

**Lamport signature** — In cryptography, a Lamport signature or Lamport one time signature scheme is a method for constructing a digital signature. Lamport signatures can be built from any cryptographically secure one way function; usually a cryptographic hash function… … Wikipedia

**Comparison of cryptographic hash functions** — The following tables compare general and technical information for a number of cryptographic hash functions.[1] Contents 1 General information 1.1 Notes 2 Compression function … Wikipedia