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<?php
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namespace Laravel\SerializableClosure\Signers;
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use Laravel\SerializableClosure\Contracts\Signer;
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class Hmac implements Signer
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{
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    /**
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     * The secret key.
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     *
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     * @var string
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     */
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    protected $secret;
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    /**
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     * Creates a new signer instance.
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     *
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     * @param  string  $secret
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     * @return void
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     */
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    public function __construct($secret)
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    {
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        $this->secret = $secret;
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    }
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    /**
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     * Sign the given serializable.
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     *
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     * @param  string  $serialized
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     * @return array
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     */
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    public function sign($serialized)
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    {
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        return [
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            'serializable' => $serialized,
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            'hash' => base64_encode(hash_hmac('sha256', $serialized, $this->secret, true)),
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        ];
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    }
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    /**
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     * Verify the given signature.
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     *
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     * @param  array  $signature
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     * @return bool
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     */
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    public function verify($signature)
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    {
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        return hash_equals(base64_encode(
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            hash_hmac('sha256', $signature['serializable'], $this->secret, true)
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        ), $signature['hash']);
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    }
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}