Question

How to use Base64 to encode and decode a string in Rust

Answer 1

use base64::{engine::general_purpose, Engine as _};
use std::str;

fn base64_encode(input: &str) -> String {
    general_purpose::STANDARD.encode(input)
}

fn base64_decode(encoded: &str) -> String {
    let decoded_bytes = general_purpose::STANDARD.decode(encoded).expect("Failed to decode base64");
    str::from_utf8(&decoded_bytes).expect("Failed to convert decoded bytes to string").to_string()
}

fn main() {
    let base64_encode_str = base64_encode("rust programming");
    
    println!("{}", base64_encode_str);
    
    println!("{}", base64_decode(&base64_encode_str));
}



 
 
/*
run:
 
cnVzdCBwcm9ncmFtbWluZw==
rust programming

*/

 

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Answer 2

use base64::{engine::general_purpose, Engine as _};
use std::error::Error;
use std::str;

fn base64_encode(input: &str) -> Result<String, Box<dyn Error>> {
    Ok(general_purpose::STANDARD.encode(input))
}

fn base64_decode(encoded: &str) -> Result<String, Box<dyn Error>> {
    let decoded_bytes = general_purpose::STANDARD.decode(encoded)?;
    Ok(str::from_utf8(&decoded_bytes)?.to_string())
}

fn main() -> Result<(), Box<dyn Error>> {
    let base64_encoded_str = base64_encode("rust programming")?;

    println!("{}", base64_encoded_str);

    let decoded_str = base64_decode(&base64_encoded_str)?;
    println!("{}", decoded_str);

    Ok(())
}

 
 
/*
run:
 
cnVzdCBwcm9ncmFtbWluZw==
rust programming

*/

 

70+ SQL courses for beginners and professionals