public $privateKey = '' ; private $_privKey ; private $encryptBlockSize = 117 ; //加密切割长度 private $decryptBlockSize = 128 ; //解密切割长度 * * private key private $_pubKey ; * * public key private $_keyPath ; * * the keys saving path * * the construtor,the param $path is the keys saving path function __construct ( $publicKey = null , $privateKey = null ) $this -> setKey ( $publicKey , $privateKey ); * 设置公钥和私钥 * @param string $publicKey 公钥 * @param string $privateKey 私钥 public function setKey ( $publicKey = null , $privateKey = null ) if (! is_null ( $publicKey )) $this ->publicKey = $publicKey ; if (! is_null ( $privateKey )) $this ->privateKey = $privateKey ; * * setup the private key private function setupPrivKey ( ) if ( is_resource ( $this ->_privKey)) return true ; $pem = chunk_split ( $this ->privateKey, 64 , "\n" ); $pem = "-----BEGIN PRIVATE KEY-----\n" . $pem . "-----END PRIVATE KEY-----\n" ; $this ->_privKey = openssl_pkey_get_private ( $pem ); return true ; * * setup the public key private function setupPubKey ( ) if ( is_resource ( $this ->_pubKey)) return true ; $pem = chunk_split ( $this ->publicKey, 64 , "\n" ); $pem = "-----BEGIN PUBLIC KEY-----\n" . $pem . "-----END PUBLIC KEY-----\n" ; $this ->_pubKey = openssl_pkey_get_public ( $pem ); return true ; * * encrypt with the private key public function privEncrypt ( $data ) if (! is_string ( $data )) return null ; $this -> setupPrivKey (); //私钥分段加密 $result = '' ; $data = str_split ( $data , $this ->encryptBlockSize); foreach ( $data as $block ) { openssl_private_encrypt ( $block , $encrypted , $this ->_privKey); $result .= $encrypted ; return $result ? base64_encode ( $result ) : null ; /*$r = openssl_private_encrypt($data, $encrypted, $this->_privKey); if ($r) return base64_encode($encrypted); return null;*/ * * decrypt with the private key public function privDecrypt ( $encrypted ) if (! is_string ( $encrypted )) return null ; $this -> setupPrivKey (); $encrypted = base64_decode ( $encrypted ); //分段解密 $result = '' ; $data = str_split ( $encrypted , $this ->decryptBlockSize); foreach ( $data as $block ) { openssl_private_decrypt ( $block , $decrypted , $this ->_privKey); $result .= $decrypted ; return $result ? $result : null ; /* $r = openssl_private_decrypt($encrypted, $decrypted, $this->_privKey); if ($r) return $decrypted; return null;*/ * * encrypt with public key public function pubEncrypt ( $data ) if (! is_string ( $data )) return null ; $this -> setupPubKey (); //分段加密 $result = '' ; $data = str_split ( $data , $this ->encryptBlockSize); foreach ( $data as $block ) { openssl_public_encrypt ( $block , $encrypted , $this ->_pubKey); $result .= $encrypted ; return $result ? base64_encode ( $result ) : null ; /*$r = openssl_public_encrypt($data, $encrypted, $this->_pubKey); if ($r) return base64_encode($encrypted); return null;*/ * * decrypt with the public key public function pubDecrypt ( $crypted ) if (! is_string ( $crypted )) return null ; $this -> setupPubKey (); $crypted = base64_decode ( $crypted ); $result = '' ; $data = str_split ( $crypted , $this ->decryptBlockSize); foreach ( $data as $block ) { openssl_public_decrypt ( $block , $decrypted , $this ->_pubKey); $result .= $decrypted ; return $result ? $result : null ; /* $r = openssl_public_decrypt($crypted, $decrypted, $this->_pubKey); if ($r) return $decrypted; return null;*/ * 构造签名 * @param string $dataString 被签名数据 * @return string public function sign ( $dataString ) $this -> setupPrivKey (); $signature = false ; openssl_sign ( $dataString , $signature , $this ->_privKey); return base64_encode ( $signature ); * 验证签名 * @param string $dataString 被签名数据 * @param string $signString 已经签名的字符串 * @return number 1签名正确 0签名错误 public function verify ( $dataString , $signString ) $this -> setupPubKey (); $signature = base64_decode ( $signString ); $flg = openssl_verify ( $dataString , $signature , $this ->_pubKey); return $flg ; public function __destruct ( ) is_resource ( $this ->_privKey) && @ openssl_free_key ( $this ->_privKey); is_resource ( $this ->_pubKey) && @ openssl_free_key ( $this ->_pubKey); // 来源 https://blog.csdn.net/xxs18326183038/article/details/112253485 复制代码

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