Base64 encode and decode

Base64 encode

Encryption Mode

Key

Output format Hex Base64

Decryption Mode

Key

Input format Hex Base64

Base64 is binary-to-text conversion strategy that allows to send text in multiple media channels without breaking the meaning of data.

Keypoints of base64

1. Base64 is not providing security.

2. Base64 encode not compress data, but it increases data size.

Python

import base64

input_str = 'This is simple text'
input_byte_str = input_str.encode('ascii')

base64_bytes = base64.b64encode(input_byte_str)
base64_str = base64_bytes.decode('ascii')
print(f'Encoded string: {base64_str}')

###########

import base64

input_str = 'VGhpcyBpcyBzaW1wbGUgdGV4dA=='
input_byte_str = input_str.encode('ascii')

output_bytes = base64.b64decode(input_byte_str)
output_str = output_bytes.decode('ascii')
print(f'Decoded string: {output_str}')

JavaScript

var input_str = 'This is simple text';

// Encode the String
var encoded_str = btoa(input_str);
console.log(encoded_str); // Outputs: 'VGhpcyBpcyBzaW1wbGUgdGV4dA=='

// Decode the String
var decoded_str = atob(encoded_str);
console.log(decoded_str); // Outputs: 'This is simple text'

NodeJs

let input_str = Buffer.from('This is simple text').toString('base64');
console.log(input_str);

let output_str = Buffer.from(input_str, 'base64').toString();
console.log(output_str);

Java

String inputStr = 'This is simple text';
String encodedString = Base64.getEncoder().encodeToString(inputStr.getBytes());

byte[] decodedBytes = Base64.getDecoder().decode(encodedString);
String decodedStr = new String(decodedBytes);

resources

» base64