[permalink] [id link]
An algorithm's key length is distinct from its cryptographic security, which is a logarithmic measure of the fastest known computational attack on the algorithm, also measured in bits.
from
Wikipedia
Some Related Sentences
algorithm's and key
This flaw does not preclude the algorithm's use as a mixed private-key / public-key algorithm, if the sender transmits secretly, but this approach presents no advantage over the common approach of transmitting a symmetric encryption key using a public-key encryption scheme and then switching to symmetric encryption, which is faster than Cayley-Purser.
In cryptography, an algorithm's key space refers to the set of all possible keys that can be used to initialize it.
algorithm's and is
Run-time efficiency is a topic of great interest in computer science: A program can take seconds, hours or even years to finish executing, depending on which algorithm it implements ( see also performance analysis, which is the analysis of an algorithm's run-time in practice ).
For example, if for a given problem size a parallelized implementation of an algorithm can run 12 % of the algorithm's operations arbitrarily quickly ( while the remaining 88 % of the operations are not parallelizable ), Amdahl's law states that the maximum speedup of the parallelized version is times as fast as the non-parallelized implementation.
Pan ( 1986 ) proved an lower bound assuming a bound on a measure of the FFT algorithm's " asynchronicity ", but the generality of this assumption is unclear.
When understood in this way, it is clear how the algorithm necessarily finds the shortest path, however it may also reveal one of the algorithm's weaknesses: its relative slowness in some topologies.
Because of the algorithm's recursive nature, it can run in real time using only the present input measurements and the previously calculated state ; no additional past information is required.
Since an algorithm's performance time may vary with different inputs of the same size, one commonly uses the worst-case time complexity of an algorithm, denoted as T ( n ), which is defined as the maximum amount of time taken on any input of size n. Time complexities are classified by the nature of the function T ( n ).
For a composite r ( that is, like the Rabin algorithm's ) there is no efficient method known for the finding of m. If, however is prime ( as are p and q in the Rabin algorithm ), the Chinese remainder theorem can be applied to solve for m.
In a Michigan-style LCS there is only a single set of rules in a population and the algorithm's action focuses on selecting the best classifiers within that set.
This algorithm's run time for solving N-Queens is independent of problem size.
algorithm's and from
As the algorithm's name implies, the errors propagate backwards from the output nodes to the inner nodes.
This alters the algorithm's solution test from a matrix having no columns to a matrix having no primary columns, but doesn't require any further changes.
algorithm's and its
By setting a specific lookahead limit, the algorithm's time can be carefully controlled ; its time increases exponentially as the lookahead limit increases.
algorithm's and cryptographic
Side channel attacks allow an adversary to recover information about the input to a cryptographic operation, by measuring something other than the algorithm's result, e. g., power consumption, computation time, or radio-frequency emanations by a device.
algorithm's and known
Because of the algorithm's importance, specific variants and implementation styles have become known by their own names, as described below.
algorithm's and on
A probabalistic algorithm's behaviors depends on a random number generator.
algorithm's and algorithm
It lets one redefine certain steps of an algorithm without changing the algorithm's structure.
algorithm's and bits
Formally, the algorithm's performance will be a random variable determined by the random bits ; thus either the running time, or the output ( or both ) are random variables.
algorithm's and .
Sometimes ( in mixed-directions text ) this leads to display errors, caused by the BiDi-algorithm that runs through the text and identifies LTR and RTL strong characters and assigns a direction to weak characters, according to the algorithm's rules.
Methods for improving the algorithm's efficiency were developed in the 20th century.
In this setting, blinding serves to alter the algorithm's input into some unpredictable state.
The rho algorithm's most remarkable success has been the factorization of the eighth Fermat number by Pollard and Brent.
to allow further reduction of the algorithm's complexity.
However, since the numbers used in these calculations are much smaller than the numbers used in the first algorithm's calculations, the computation time decreases by a factor of at least O ( e ) in this method.
key and length
otherwise, you'll have to spend a few minutes to either attach a suitable spring clip somewhere on the press head or fit the key to a length of light chain and fasten to the bottom of the motor mount so that the key is out of the way when not in use.
Blowfish has a 64-bit block size and a variable key length from 32 bits up to 448 bits.
which takes as input a key K of bit length k, called the key size, and a bit string P of length n, called the block size, and returns a string C of n bits.
Since the desired effect is computational difficulty, in theory one would choose an algorithm and desired difficulty level, thus decide the key length accordingly.
In cryptography, key size or key length is the size measured in bits of the key used in a cryptographic algorithm ( such as a cipher ).
The security of an algorithm cannot exceed its key length ( since any algorithm can be cracked by brute force ), but it can be smaller.
Most symmetric-key algorithms in common use are designed to have security equal to their key length.
No asymmetric-key algorithms with this property are known ; elliptic curve cryptography comes the closest with an effective security of roughly half its key length.
Shannon's work on information theory showed that to achieve so called perfect secrecy, it is necessary for the key length to be at least as large as the message to be transmitted and only used once ( this algorithm is called the One-time pad ).
For this reason cryptologists tend to look at indicators that an algorithm or key length shows signs of potential vulnerability, to move to longer key sizes or more difficult algorithms.
With a key of length n bits, there are 2 < sup > n </ sup > possible keys.
This is one of the reasons why AES supports a 256-bit key length.
Today, a key length of 40 bits offers little protection against even a casual attacker with a single PC, a predictable and inevitable consequence of governmental restrictions limiting key length.
When the Data Encryption Standard cipher was released in 1977, a key length of 56 bits was thought to be sufficient.
key and is
The key word in my plays is ' perhaps ' ''.
We know that much is made of the multiplicity and ambiguity of the identities that cluster around the key symbol of the Jew.
The symposium provides an opportunity to confront the self with specific statements which were made at particular times by identifiable communicators who were addressing definite audiences -- and throughout several hundred pages everyone is talking about the same key symbol of identification.
This is the key fact emerging from Sunday's national election.
But the key revelation is not new.
A romantic is one who thinks the world is divinely inspired and all he has to do is find the right key, and then divine justice and altruism will appear.
The long-range objective is to bring about consolidation of ownership through use of land exchange authority and through purchase on a moderate scale of inholdings which comprise key tracts for recognized National Forest programs such as recreation development, or which are a source of damage to lands in National Forests and National Grasslands.
The key to effective marketing is wrapped up in defining your company's marketing problems realistically.
A new low capacity meter is the key that unlocks the situation at Oakwood Heights.
The phrasing is irregular, and the abrupt key changes have a primitive forcefulness.
Rangoni's first entrance is a musical shock, a sudden open fifth in a key totally unrelated to what has preceded it.
The key to the world of geology is change ; ;
I submit that this is the key problem of international relations, that it always has been, that it always will be.
The soldiers are fighting and the Americans are helping, he said, but in the fight against the Pathet Lao the key factor is the villager himself.
The key to Protestant development, therefore, is economic integration of the nucleus of the congregation.
I said `` Darn it, that's the automatic signal that shows when the ignition key is on.
And the key to the suite is still missing ''.
Mr. Schaefer also recommended that the snow emergency route plan, under which parking is banned on key streets and cars are required to use snow tires or chains on them, should be `` strictly enforced ''.
`` Convenience is therefore the key to the housing market today.
A publicity release from Oregon Physicians Service, of which Harvey is president, quoted him as saying the welfare office move to Salem, instead of `` crippling '' the agency, had provided an avenue to correct administrative weaknesses, with the key being improved communications between F & A and the commission staff.
Now a quiet-spoken, middle-aged man, Fiedler is an aeronautical engineer for Lockheed's Missiles and Space Division at Sunnyvale, where he played a key role in the development of the Navy's Polaris missile.
0.209 seconds.