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cryptographic attack

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См. также в других словарях:

  • Attack model — Attack models or attack typesref|secondname specify how much information a cryptanalyst has access to when cracking an encrypted message. Some common attack models are: *Ciphertext only attack *Known plaintext attack *Chosen plaintext attack… …   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

  • Meet-in-the-middle attack — Not to be confused with man in the middle attack. The meet in the middle attack is a cryptographic attack which, like the birthday attack, makes use of a space time tradeoff. While the birthday attack attempts to find two values in the domain of… …   Wikipedia

  • Birthday attack — A birthday attack is a type of cryptographic attack, so named because it exploits the mathematics behind the birthday problem in probability theory. Given a function f , the goal of the attack is to find two inputs x 1,x 2 such that f(x 1)=f(x 2) …   Wikipedia

  • Man-in-the-middle attack — Not to be confused with Meet in the middle attack. In cryptography, the man in the middle attack (often abbreviated MITM), bucket brigade attack, or sometimes Janus attack, is a form of active eavesdropping in which the attacker makes independent …   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

  • Brute-force attack — The EFF s US$250,000 DES cracking machine contained over 1,800 custom chips and could brute force a DES key in a matter of days. The photograph shows a DES Cracker circuit board fitted with 32 Deep Crack chips and some control chips. In… …   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

  • Timing attack — In cryptography, a timing attack is a side channel attack in which the attacker attempts to compromise a cryptosystem by analyzing the time taken to execute cryptographic algorithms. The attack exploits the fact that every operation in a computer …   Wikipedia

  • Brute force attack — In cryptanalysis, a brute force attack is a method of defeating a cryptographic scheme by trying a large number of possibilities; for example, possible keys in order to decrypt a message. In most schemes, the theoretical possibility of a brute… …   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

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