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random message attack

См. также в других словарях:

  • Message authentication code — In cryptography, a message authentication code (often MAC) is a short piece of information used to authenticate a message. A MAC algorithm, sometimes called a keyed (cryptographic) hash function, accepts as input a secret key and an arbitrary… …   Wikipedia

  • Random number generator attack — The security of cryptographic systems depends on some secret data that is known to authorized persons but unknown and unpredictable to others. To achieve this unpredictability, some randomization is typically employed. Modern cryptographic… …   Wikipedia

  • Coppersmith's Attack — describes a class of attacks on the public key cryptosystem RSA based on Coppersmith s theorem (see below). The public key in the RSA system is a tuple of integers (N,e), where N is the product of two primes p and q. The secret key is given by an …   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

  • Distinguishing attack — In cryptography, a distinguishing attack is any form of cryptanalysis where the attacker can extract some information from encrypted data sufficient to distinguish it from random data. This information might then reveal the encryption method used …   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

  • Events leading to the attack on Pearl Harbor — More than a decade s worth of events leading to the attack on Pearl Harbor occurred prior to the actual attack. War between Japan and the United States had been a possibility that each nation s militaries planned for since the 1920s, though real… …   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

  • Replay attack — A replay attack is a form of network attack in which a valid data transmission is maliciously or fraudulently repeated or delayed. This is carried out either by the originator or by an adversary who intercepts the data and retransmits it,… …   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

  • Directory Harvest Attack — A Directory Harvest Attack or DHA is a technique used by spammers in an attempt to find valid/existent e mail addresses at a domain by using brute force. The attack is usually carried out by way of a standard dictionary attack, where valid e mail …   Wikipedia

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