Foundations of Blockchain

Encoding schemes

Encoding schemes are generally used in data storage or the transmission of textual data over a medium. You can often observe the conversion of binary to text-encoding schemes in primitive cryptographic implementations.

Encoding schemes provide a compact way of representing long sequences of characters using a base. For example, a decimal system uses base 10, which uses characters from 0-9, and a hexadecimal system uses additional characters from A-F, along with the numbers from the decimal system. The bigger the base of a system, the smaller the size of the encoded string.

Base64 is an encoding scheme that is widely used to store and transmit large files such as an image. It uses 26 lowercase letters, 26 uppercase letters, ...