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RSA encryption
<cryptography, algorithm> A public-key cryptosystem for both
encryption and authentication, invented in 1977 by Ron
Rivest, Adi Shamir, and Leonard Adleman. Its name comes from
their initials.
The RSA algorithm works as follows: take two large prime
numbers, p and q, and find their product n = pq; n is called
the modulus. Choose a number, e, less than n and relatively
prime to (p-1)(q-1), and find its inverse, d, mod (p-1)(q-1),
which means that ed = 1 mod (p-1)(q-1); e and d are called the
public and private exponents, respectively. The public key is
the pair (n,e); the private key is d. The factors p and q
must be kept secret, or destroyed. It is difficult
(presumably) to obtain the private key d from the public key
(n,e). If one could factor n into p and q, however, then one
could obtain the private key d. Thus the entire security of
RSA depends on the difficulty of factoring; an easy method for
factoring products of large prime numbers would break RSA.
RSA FAQ.
(2002-03-29)
Try this search on OneLook / Google
Nearby terms:
RS6K « RSA « RSA Data Security, Inc. « RSA encryption » RSCS » Réseaux Associés pour la Recherche Européenne » Réseaux IP Européens
This article was derived from the Free Online Dictionary of Computers and is available under ther terms of the GNU Free Documentation License.
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