RSA Security 5.2.2 manual Number extracted from a pseudo- random sequence

private key

In public-key cryptography, this key is the secret key. It is primarily used for decryption but is also used for encryption with digital signatures.

pseudo-random number

A number extracted from a pseudo- random sequence.

pseudo-random sequence

A deterministic function that produces a sequence of bits with qualities similar to that of a truly random sequence.

public key

In public-key cryptography this key is made public to all; it is primarily used for encryption but can be used for verifying signatures.

public-key cryptography

Cryptography based on methods involving a public key and a private key.

RSA algorithm

Apublic-key cryptosystem based on the factoring problem. RSA stands for Rivest, Shamir and, Adleman, the developers of the RSA public-key cryptosystem and the founders of RSA Data Security (now RSA Security).

random number

As opposed to a pseudo-random number, a truly random number is a number produced independently of its generating criteria. For cryptographic purposes, numbers based on physical measurements, such as a Geiger

counter, are considered random.

relatively prime

Two integers are relatively prime if they have no common factors. For example, 14 and 25 are relatively prime, while 14 and 91 are not; 7 is a common factor.

S-HTTP

Secure HyperText Transfer Protocol. A secure way of transferring information over the World Wide Web.

S/MIME

Secure Multipurpose Internet Mail Extensions.

SSL

Secure Socket Layer. A protocol used for secure Internet communications.

SWIFT

Society for Worldwide Interbank Financial Telecommunications.

salt

A string of random (or pseudo-random) bits concatenated with a key or password to foil precomputation attacks.

satisfiability problem

Given a Boolean expression, determine if there is an assignment of 1's and 0's such that the expression evaluates to 1. This is a hard problem.

secret key

In secret-key cryptography, this is the key used both for encryption and decryption.

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