Codecs

use RoundlyConsulting\Crypto\Facades\Crypto;

$encoded = Crypto::base64UrlEncode($bytes);      // unpadded, URL-safe
$bytes   = Crypto::base64UrlDecode($encoded);    // STRICT — throws InvalidEncodingException

Crypto::base64Encode($bytes);   Crypto::base64Decode($padded);
Crypto::base32Encode($bytes);   Crypto::base32Decode($secret);
Crypto::hexEncode($bytes);      Crypto::hexDecode($hex);

use RoundlyConsulting\Crypto\Codec\Base64Url;
use RoundlyConsulting\Crypto\Codec\Base64;
use RoundlyConsulting\Crypto\Codec\Base32;
use RoundlyConsulting\Crypto\Codec\Hex;

$encoded = Base64Url::encode($bytes);        // unpadded, URL-safe
$bytes   = Base64Url::decode($encoded);      // STRICT: rejects +, /, =, and non-alphabet

$padded  = Base64::encode($bytes);           // standard padded base64 (+/ alphabet, = padding)
$bytes   = Base64::decode($padded);          // STRICT: rejects non-canonical / non-alphabet

$secret  = Base32::encode($randomBytes);     // e.g. "GEZDGNBVGY3TQOJQ"
$bytes   = Base32::decode($secret);          // case-insensitive; canonical, strict

$hex     = Hex::encode($bytes);              // lower-case, e.g. "68656c6c6f"
$bytes   = Hex::decode($hex);                // throws on odd length or any non-hex character

use RoundlyConsulting\Crypto\Codec\InvalidEncodingException;

try {
    $bytes = Base64Url::decode($userInput);
} catch (InvalidEncodingException $e) {
    // reject the tampered / malformed value
}