php-simple-jwt/src/Key/JWTPlaintextKey.php

<?php

namespace NoccyLabs\SimpleJWT\Key;

class JWTPlaintextKey implements KeyInterface
{
    private $key;

    public function __construct(string $key)
    {
        $this->key = $key;
    }

    public function getBinaryKey(): string
    {
        return $this->key;
    }
}