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<?php |
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declare(strict_types=1); |
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/* |
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* This file is part of the EasyWeChatComposer. |
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* |
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* (c) 张铭阳 <[email protected]> |
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* |
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* This source file is subject to the MIT license that is bundled |
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* with this source code in the file LICENSE. |
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*/ |
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namespace EasyWeChatComposer\Encryption; |
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use EasyWeChatComposer\Contracts\Encrypter; |
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use EasyWeChatComposer\Exceptions\DecryptException; |
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use EasyWeChatComposer\Exceptions\EncryptException; |
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class DefaultEncrypter implements Encrypter |
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{ |
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/** |
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* @var string |
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*/ |
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protected $key; |
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/** |
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* @var string |
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*/ |
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protected $cipher; |
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/** |
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* @param string $key |
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* @param string $cipher |
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*/ |
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public function __construct($key, $cipher = 'AES-256-CBC') |
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{ |
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$this->key = $key; |
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$this->cipher = $cipher; |
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} |
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/** |
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* Encrypt the given value. |
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* |
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* @param string $value |
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* |
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* @return string |
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* |
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* @throws \EasyWeChatComposer\Exceptions\EncryptException |
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*/ |
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public function encrypt($value) |
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{ |
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$iv = random_bytes(openssl_cipher_iv_length($this->cipher)); |
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$value = openssl_encrypt($value, $this->cipher, $this->key, 0, $iv); |
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if ($value === false) { |
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throw new EncryptException('Could not encrypt the data.'); |
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} |
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$iv = base64_encode($iv); |
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return base64_encode(json_encode(compact('iv', 'value'))); |
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} |
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/** |
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* Decrypt the given value. |
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* |
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* @param string $payload |
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* |
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* @return string |
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* |
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* @throws \EasyWeChatComposer\Exceptions\DecryptException |
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*/ |
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public function decrypt($payload) |
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{ |
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$payload = json_decode(base64_decode($payload), true); |
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$iv = base64_decode($payload['iv']); |
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$decrypted = openssl_decrypt($payload['value'], $this->cipher, $this->key, 0, $iv); |
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if ($decrypted === false) { |
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throw new DecryptException('Could not decrypt the data.'); |
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} |
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return $decrypted; |
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} |
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} |
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mingyoung /
easywechat-composer
