Base64 encode and decode

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

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}')

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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}')

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'

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);

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

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