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The security of RSA relies on the practical difficulty of factoring the product of two large prime numbers, the "factoring problem". Breaking RSA encryption is known as the RSA problem. Whether it is as difficult as the factoring problem is an open question. [3] There are no published methods to defeat the system if a large enough key is used.
A driving test generally consists of one or two parts: the practical test (sometimes called a road test in the United States), used to assess a person's driving ability under normal operating conditions, [1] and a theory test (written, oral or computerized) to confirm a person's knowledge of driving and relevant rules and laws.
The driver theory test is carried out by Prometric Ireland on behalf of the RSA. Candidates get asked forty multiple choice questions. In order to pass the theory test, candidates must score at least 35/40. Anything scored under 35 is a fail and the test must be retaken.
Around 1.6 million people sit the practical car test each year, with a pass rate of around 43%. The theory test has a pass rate of around 50%. [6] To become a category B (car) licence holder, candidates pay £23 for the theory test and £62 (£45.50 in Northern Ireland [7]) for the practical driving test. [8]
The first deterministic primality test significantly faster than the naive methods was the cyclotomy test; its runtime can be proven to be O((log n) c log log log n), where n is the number to test for primality and c is a constant independent of n. A number of further improvements were made, but none could be proven to have polynomial running time.
Protocols proven to be information-theoretically secure are resistant to future developments in computing. The concept of information-theoretically secure communication was introduced in 1949 by American mathematician Claude Shannon, one of the founders of classical information theory, who used it to prove the one-time pad system was secure. [3]
The RSA Factoring Challenge was a challenge put forward by RSA Laboratories on March 18, 1991 [1] to encourage research into computational number theory and the practical difficulty of factoring large integers and cracking RSA keys used in cryptography.
Theory test may refer to: The two-part theory section of the United Kingdom driving test; The computerised test required to obtain a Driving licence in the Republic of Ireland; Any of the similar tests required in many other countries, see driving test and driver's license