base58Encode

Encodes a byte array into a Base58 string. This is a standalone utility function provided in base58.h and is essential for representing binary data, like public keys and signatures, in a human-readable format.

Parameters

Parameter	Type	Description
data	const uint8_t*	A pointer to the byte array to be encoded.
len	size_t	The length of the byte array in bytes.

Return Value

• String: The Base58 encoded string representation of the input data.

Example Code (main.cpp)

#include <Arduino.h>
#include "base58.h" // Include the standalone header

void setup() {
    Serial.begin(115200);
    delay(1000);

    Serial.println("\n=== base58Encode Example ===");

    // Example data (20 bytes)
    uint8_t dataToEncode[] = {
        0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09,
        0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13
    };

    Serial.print("Original data (hex): ");
    for(size_t i = 0; i < sizeof(dataToEncode); i++) {
        if(dataToEncode[i] < 0x10) Serial.print("0");
        Serial.print(dataToEncode[i], HEX);
    }
    Serial.println();

    String encoded = base58Encode(dataToEncode, sizeof(dataToEncode));

    Serial.println("✅ Encoded (Base58): " + encoded);
    // Expected output for the above data starts with '16VN'
}

void loop() {
    // Can be left empty
}