PHP中使用OpenSSL生成证书及加密解密
依赖于OpenSSL扩展:
- /*加密解密*/
- functionauthcode($string,$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*/
- functionexportOpenSSLFile(){
- $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($res== false)returnfalse;
- openssl_pkey_export($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);
- }