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HomeBackend DevelopmentPHP Tutorialphp pki加密技术(openssl)详解_PHP

openssl

复制代码 代码如下:
//pki加密
//使用pki加密需要开启 openssl扩展
//php.ini extension = php_openssl.dll扩展
/*pki模式是
 * 公钥加密,私钥解密;
 * 私钥加密,公钥解密;
 */
//私钥加密,公钥解密
//客户端
//$data数据
$data = 'abcd';
//获取私钥 $priv_key_id
$priv_key_id = openssl_get_privatekey(file_get_contents('99bill-rsa.pem', r));
//获取公钥  $pub_key_id
$pub_key_id = openssl_get_publickey(file_get_contents('99bill-rsa.cer', r));
//$data首选通过SHA1哈希加密,然后通过$priv_key_id私钥加密,生成签名$signature
//$signature就是加密过的签名
//openssl_sign()加密函数,至于它的解密方法我不知道??????????????????????
openssl_sign($data, $signature, $priv_key_id, OPENSSL_ALGO_SHA1);
//还有两种加密函数,而且这两种加密函数有解密方法,知道
//第一种:私钥加密,公钥解密
//$data要加密的数据,$crypted是加密生成的数据,$decrypted是解密生成的数据;  $data与$decrypted值相同
//通过$priv_key_id私钥加密,生成$crypted;
openssl_private_encrypt($data, $crypted, $priv_key_id);
echo $crypted;
//通过$pub_key_id公钥解密,生成$decrypted
openssl_public_decrypt($crypted, $decrypted , $pub_key_id);
//第二种:公钥加密,私钥解密
//$data要加密的数据,$crypted是加密生成的数据,$decrypted是解密生成的数据;  $data与$decrypted值相同
//通过$pub_key_id公钥加密,生成$crypted;
openssl_public_encrypt($data, $crypted, $pub_key_id);
//通过$priv_key_id私钥解密,生成$decrypted
openssl_private_decrypt($crypted, $decrypted, $priv_key_id);
//注意事项,我这边的获取公钥与私钥的文件是不对应的
//正常情况,获取公钥与私钥文件是一一对应的,这里我使用快钱的。
//快钱给了私钥生成文件,对应的公钥生成文件在快钱那边
//快钱给了公钥生成文件,对应的私钥生成文件在快钱那边
//也就是缺少了一个公钥生成文件和一个私钥生成文件
//我始终没找到一个一一对应的私钥、公钥生成文件,如果你找的了发我一份,谢谢。
// openssl_verify()方法验证签名是否正确(私钥加密生成的数据返回来,用对应的公钥验证),只有这一种情况。
// $signature公钥加密生成的数据,$data原始数据,成功返回1,失败返回0,错误返回-1
// $pub_key_id公钥
openssl_verify($data, $signature, $pub_key_id);
//从内存中释放私钥或公钥
openssl_free_key($priv_key_id);
openssl_free_key($pub_key_id);

生成私钥与公钥
genrsa -out private-rsa.pem
rsa -in private-rsa.pem -pubout -out pubic-rsa.cer
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