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- Custom_hardware_attack abstract "In cryptography, a custom hardware attack uses specifically designed application-specific integrated circuits (ASIC) to decipher encrypted messages.Mounting a cryptographic brute force attack requires a large number of similar computations: typically trying one key, checking if the resulting decryption gives a meaningful answer and trying the next key if it does not. Computers can perform these calculations at a rate of millions per second, and thousands of computers can be harnessed together in a distributed computing network. But the number of computations required on average grows exponentially with the size of the key and for many problems standard computers are not fast enough. On the other hand, many cryptographic algorithms lend themselves to fast implementation in hardware, i.e. networks of logic circuits or "gates." Integrated circuits (ICs) are constructed of these gates and often can execute cryptographic algorithms hundreds of times faster than a general purpose computer. Each IC can contain large numbers of gates (hundreds of millions in 2005) and the number continues to grow according to Moore's law. Thus the same decryption circuit, or cell, can be replicated thousands of times on one IC. The communications requirements for these ICs are very simple. Each must be initially loaded with a starting point in the key space and, in some situations, with a comparison test value (see known plaintext attack). Output consists of a signal that the IC has found an answer and the successful key.Since ICs lend themselves to mass production, thousands or even millions of ICs can be applied to a single problem. The ICs themselves can be mounted in printed circuit boards. A standard board design can be used for different problems since the communication requirements for the chips are the same. Wafer-scale integration is another possibility. The primary limitations on this method are the cost of chip design, IC fabrication, floor space, electric power and thermal dissipation.An alternative approach is to use FPGAs (field-programmable gate arrays); these are slower and more expensive per gate, but can be reprogrammed for different problems. COPACOBANA (Cost-Optimized Parallel COde Breaker) is one such machine, consisting of 120 FPGAs of type Xilinx Spartan3-1000 which run in parallel.".
- Custom_hardware_attack thumbnail Board300.jpg?width=300.
- Custom_hardware_attack wikiPageExternalLink index.html.
- Custom_hardware_attack wikiPageExternalLink ops_FPGA.html.
- Custom_hardware_attack wikiPageID "2174032".
- Custom_hardware_attack wikiPageRevisionID "602963026".
- Custom_hardware_attack hasPhotoCollection Custom_hardware_attack.
- Custom_hardware_attack subject Category:Cryptographic_attacks.
- Custom_hardware_attack type Abstraction100002137.
- Custom_hardware_attack type Act100030358.
- Custom_hardware_attack type Activity100407535.
- Custom_hardware_attack type Attack100972621.
- Custom_hardware_attack type CryptographicAttacks.
- Custom_hardware_attack type Event100029378.
- Custom_hardware_attack type Operation100955060.
- Custom_hardware_attack type PsychologicalFeature100023100.
- Custom_hardware_attack type YagoPermanentlyLocatedEntity.
- Custom_hardware_attack comment "In cryptography, a custom hardware attack uses specifically designed application-specific integrated circuits (ASIC) to decipher encrypted messages.Mounting a cryptographic brute force attack requires a large number of similar computations: typically trying one key, checking if the resulting decryption gives a meaningful answer and trying the next key if it does not.".
- Custom_hardware_attack label "COPACOBANA".
- Custom_hardware_attack label "Custom hardware attack".
- Custom_hardware_attack sameAs COPACOBANA.
- Custom_hardware_attack sameAs m.06sctd.
- Custom_hardware_attack sameAs Q3648857.
- Custom_hardware_attack sameAs Q3648857.
- Custom_hardware_attack sameAs Custom_hardware_attack.
- Custom_hardware_attack wasDerivedFrom Custom_hardware_attack?oldid=602963026.
- Custom_hardware_attack depiction Board300.jpg.
- Custom_hardware_attack isPrimaryTopicOf Custom_hardware_attack.
