Portugal has various sports activities, and below are the top five most popular Portuguese sports. Football. Football (aka Soccer in the U.S.) takes the top spot on the list of the most popular Portuguese sports. A good number of talented football players from Portugal are known worldwide.
This article is about algorithms for encryption and decryption. For an overview of cryptographic technology in general, see Cryptography. In cryptography, encryption is the process of encoding messages or information in such a way that only authorized parties can read it. Encryption does not of itself prevent interception, but denies the message content to the interceptor.
A system for encrypting and decrypting data is a cryptosystem. These usually involve an algorithm for combining the original data (plaintext) with one or more keys - numbers or strings of characters known only to the sender and/or recipient. The resulting output is known as ciphertext.