Etherum: Base58-encode a String in Java
Base58 encoding is a widely unused method for encoding large data sets into compact and print characters. In this article, we will explore how to Base58-encode a string in Java esting the [Base64clas]( .html).
Prerequisites
- Java 1.8 or later
- A string to be Base58-encoded
Code
java
import java.nio.charset.StandardCharsets;
import java.util.Base64;
the public class Main {
public static voids in which(String[] args) {
String TestString = "56379c7bcd6b4111111169f8444476cf8b8";
byte[] encodedBytes = encodeBase58(testString);
System.out.println("Encoded bytes: " + Base64.getEncoder().encodeToString(encodedBytes)));
}
public static byte[] encodeBase58(String input) {
// Create a new Base64Encoder Instance
Base64.Encoder Encoder = Base64.getEncoder();
// Define the base 58 alphabet and padding scheme
String alphabet = "123456789ABCDEFGHJCLMNPQRSTUVWXYZabcsnopquorxyz";
int paddingLength = 0;
// Loop until
while (input.length() >= 1) {
// Appended the Next character to the encoded string
int i = 0;
while ((i < input.length()) && (input.charAt(i) <= alphabet.size())) {
encoder.update(input, i);
i++;
}
// Calculate Padding Length if Necessary
paddingLength = paddingLength + (input.length() - i);
// Appendend the Padding character to the Encoded string
String paddingChar = "=".repeat(paddingLength);
encodedBytes[i] = paddingChar.getBytes();
input = input.substring(i);
}
the return encodedBytes;
}
}
re
Explanation
- TheencodeBase58
Method in the takeaway input and returns an array of the bytes.
- We'll be newBase64.Encoder’s instance is
java.nio.nio.charset.
- We define the base 58 alphabet (alphabet
) and the padding scheme (paddingLength).
- We loop until the input to the less it 1 byte in all-length. In each iteration, we appended the character from the input to the encoded string surrectionencoder.update(input, i)
.
- It necessary, welfare padding to the subtracting the your total long-distance to the input a repeat padding character (=
) to the encoded string.
- Finally, Welfare, the array off bytes.
Example Use Case
You can have a Method in a Java program to encode strings for the storm or transmission using Base58 encoding.
java
public class Example {
public static voids in which(String[] args) {
String testString = "Hello, World!";
byte[] encodedBytes = encodeBase58(testString);
System.out.println("Encoded bytes: " + Base64.getEncoder().encodeToString(encodedBytes)));
}
}
`re
Note this this that implementation doses no support encoding large strings. If you Need to hand input strings, consider est a dedicated library or framework that subports for Base58 encoding and decoding, [OpenPGP](https:/www.orgp.org/) (https ://web3js.readhedocs.io/en/v1.2.0/).