Base64 implementation in Rust - Part 2: decoding
In the previous article, we explored how base64 encoding works and successfully implemented it in Rust. Now, let’s delve into the process of decoding a base64-encoded string. It is important to note that the implementations discussed here are primarily for educational purposes, and for production environments, it is recommended to employ well-established libraries. Theory Here are the steps to decode a base64-encoded string: Split the string into groups of 4 characters. Find the index of each character in the base64 character map. Convert each index into binary. Combine all the binaries in a group into one binary, resulting in 24 bits. Split the binary into groups of 8 bits, which correspond to characters in the ASCII table. These steps will enable us to successfully decode the base64-encoded string. ...