RSA Encryption

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What Does RSA Encryption Mean?

RSA encryption is a public-key encryption technology developed by RSA Data Security. The RSA algorithm is based on the difficulty in factoring very large numbers. Based on this principle, the RSA encryption algorithm uses prime factorization as the trap door for encryption. Deducing an RSA key, therefore, takes a huge amount of time and processing power. RSA is the standard encryption method for important data, especially data that's transmitted over the Internet.

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RSA stands for the creators of the technique, Rivest, Shamir and Adelman.

Techopedia Explains RSA Encryption

RSA encryption is a public key encryption technology developed by RSA Data Security, which licenses the algorithm technologies and also sells the development kits. RSA is built into many common software products, including Microsoft's Internet Explorer.

A person using RSA encryption finds the product of two large prime numbers, which are kept confidential. With additional mathematical operations, two sets of numbers – public and private keys – are developed. Once the public and private keys are derived, the large numbers can be discarded.

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Margaret Rouse
Technology expert
Margaret Rouse
Technology expert

Margaret is an award-winning writer and educator known for her ability to explain complex technical topics to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles in the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret’s idea of ​​a fun day is to help IT and business professionals to learn to speak each other’s highly specialized languages.