![]() Here, each character is assigned a number, whose binary representation ( byte) should be interpreted as a character. Historically, the English alphabet ( a-zA-Z) and Arabic numerals ( 0-9) of nearly all modern computer systems are encoded using the ASCII encoding scheme. Here we will discuss some of the basic encodings of data. These representations are called encodings. When playing capture the flag (CTF) challenges, you will encounter many different ways of representing data. In that case the same byte 01100001 represents the character a. Therefore, we can tell a computer how to interpret a byte, e.g. However, if we look at all bytes as numbers, we would not be able use bytes as text, pictures, or even computer programs. Usually, these sequences are grouped in 8 bits, which is called a byte.Įven the text that you read right now is, on a low level, stored as bytes.Ĭomputers have various way of interpreting those bytes.įor example, when a computer sees the byte 01100001, it can interpret it as a binary representation of the number 97. ![]() In computer systems, all data is stored in binary, which are sequences of 1s and 0s. ![]()
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