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<?php
/**
* Trait implementation of the secret key capabilities for symmetric encryption algorithms.
*/
namespace CryptoManana\Core\Traits\MessageEncryption;
use \CryptoManana\Core\Interfaces\MessageEncryption\SecretKeyInterface as SecretKeySpecification;
* Trait SecretKeyTrait - Reusable implementation of `SecretKeyInterface`.
*
* @see \CryptoManana\Core\Interfaces\MessageDigestion\SecretKeyInterface The abstract specification.
* @package CryptoManana\Core\Traits\MessageEncryption
* @property string $key The encryption/decryption secret key property storage.
* @mixin SecretKeySpecification
trait SecretKeyTrait
{
* Setter for the secret key string property.
* @param string $key The encryption key string.
* @return $this The encryption algorithm object.
* @throws \Exception Validation errors.
public function setSecretKey($key)
if (!is_string($key)) {
throw new \InvalidArgumentException('The secret key must be a string or a binary string.');
}
* {@internal The encryption standard is 8-bit wise (don not use StringBuilder) and utilizes performance. }}
if (strlen($key) > static::KEY_SIZE) {
$key = hash_hkdf('sha256', $key, static::KEY_SIZE, 'CryptoMañana', '');
} elseif (strlen($key) < static::KEY_SIZE) {
$key = str_pad($key, static::KEY_SIZE, "\x0", STR_PAD_RIGHT);
$this->key = $key;
return $this;
* Getter for the secret key string property.
* @return string The encryption key string.
public function getSecretKey()
return $this->key;
TonyKaravasilev /
CryptoManana
