PHP implements using OpenSSL to generate certificates and encrypt and decrypt

This article mainly introduces the use of OpenSSL to generate certificates and encryption and decryption in PHP. Friends who need it can refer to it

Depends on OpenSSL extension

/*加密解密*/
function authcode($string, $operation = 'E') {
  $ssl_public = file_get_contents(DATA_PATH."/conf/cert_public.key");
  $ssl_private = file_get_contents(DATA_PATH."/conf/cert_private.pem");
  $pi_key = openssl_pkey_get_private($ssl_private);//这个函数可用来判断私钥是否是可用的，可用返回资源id Resource id
  $pu_key = openssl_pkey_get_public($ssl_public);//这个函数可用来判断公钥是否是可用的
  if(false == ($pi_key || $pu_key)) return '证书错误';
  $data = "";
  if($operation=='D'){
    openssl_private_decrypt(base64_decode($string),$data,$pi_key);//私钥解密
  }else{
    openssl_public_encrypt($string,$data,$pu_key);//公钥加密
    $data = base64_encode($data);
  }
  return $data;
}
/*生成证书*/
function exportOpenSSLFile(){
  $config = array(
    "digest_alg"    => "sha512",
    "private_key_bits" => 4096,           //字节数  512 1024 2048  4096 等
    "private_key_type" => OPENSSL_KEYTYPE_RSA,   //加密类型
  );
  $res = openssl_pkey_new($config);
  if($res == false) return false;
  openssl_pkey_export($res, $private_key);
  $public_key = openssl_pkey_get_details($res);
  $public_key = $public_key["key"];
  file_put_contents(DATA_PATH."/conf/cert_public.key",$public_key);
  file_put_contents(DATA_PATH."/conf/cert_private.pem",$private_key);
  openssl_free_key($res);
}

The above is the entire content of this article, I hope it will be helpful to everyone's study.

Related recommendations:

PHP uses Socket to obtain the website’s SSLCertificate and public key method

How to install SSLcertificate in phpStudy environment

php View SSLcertificateinformation method

The above is the detailed content of PHP implements using OpenSSL to generate certificates and encrypt and decrypt. For more information, please follow other related articles on the PHP Chinese website!