CryptoManana\Core\Traits\MessageEncryption\SecretKeyTrait::setSecretKey()

Complexity

Conditions	4
Paths	4

Size

Total Lines	18
Code Lines	8

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	9
CRAP Score	4

Importance

Changes	1
Bugs	0	Features	0

<?php
    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;
    }