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  2. RSA Factoring Challenge - Wikipedia

    en.wikipedia.org/wiki/RSA_Factoring_Challenge

    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.

  3. RSA Secret-Key Challenge - Wikipedia

    en.wikipedia.org/wiki/RSA_Secret-Key_Challenge

    The RSA Secret-Key Challenge was a series of cryptographic contests organised by RSA Laboratories with the intent of helping to demonstrate the relative security of different encryption algorithms. The challenge ran from 28 January 1997 until May 2007. [1]

  4. RSA (cryptosystem) - Wikipedia

    en.wikipedia.org/wiki/RSA_(cryptosystem)

    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.

  5. Integer factorization records - Wikipedia

    en.wikipedia.org/wiki/Integer_factorization_records

    Integer factorization is the process of determining which prime numbers divide a given positive integer.Doing this quickly has applications in cryptography.The difficulty depends on both the size and form of the number and its prime factors; it is currently very difficult to factorize large semiprimes (and, indeed, most numbers that have no small factors).

  6. RSA - Wikipedia

    en.wikipedia.org/wiki/RSA

    RSA (cryptosystem) (Rivest–Shamir–Adleman), for public-key encryption RSA Conference, annual gathering; RSA Factoring Challenge, for factoring a set of semi-prime numbers; RSA numbers, with two prime numbers as factors

  7. Challenge–response authentication - Wikipedia

    en.wikipedia.org/wiki/Challenge–response...

    Challenge-response protocols are also used in non-cryptographic applications. CAPTCHAs, for example, are meant to allow websites and applications to determine whether an interaction was performed by a genuine user rather than a web scraper or bot. In early CAPTCHAs, the challenge sent to the user was a distorted image of some text, and the user ...

  8. RSA numbers - Wikipedia

    en.wikipedia.org/wiki/RSA_numbers

    While the RSA challenge officially ended in 2007, people are still attempting to find the factorizations. According to RSA Laboratories, "Now that the industry has a considerably more advanced understanding of the cryptanalytic strength of common symmetric-key and public-key algorithms, these challenges are no longer active."

  9. The Magic Words are Squeamish Ossifrage - Wikipedia

    en.wikipedia.org/wiki/The_Magic_Words_are...

    There was a US$100 prize associated with the challenge, which the winners donated to the Free Software Foundation. In 2015, the same RSA-129 number was factored in about one day, with the CADO-NFS open source implementation of number field sieve, using a commercial cloud computing service for about $30. [11]