DEFINITION of 'Warranty'. A type of guarantee that a manufacturer or similar party makes regarding the condition of its product. It also refers to the terms and situations in which repairs or exchanges will be made in the event that the product does not function as originally described or intended. Next Up.
RSA is an algorithm used by modern computers to encrypt and decrypt messages. It is an asymmetric cryptographic algorithm.
RSA scrambles data based on the product of two prime numbers, each of which is 100 digits long. RSA is known as a public key encryption system, meaning that many people can use it to encode information, but only the person who holds the key (or knows the value of the two prime numbers) can decode it again.