openssl_x509_check_private_key

(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)

openssl_x509_check_private_key — 检查私钥是否对应于证书

说明

openssl_x509_check_private_key ( mixed $cert , mixed $key ) : bool

检查给定的私钥 key 是否和证书 cert 对应。

Warning

这个函数不会检查密钥key是否真的是私钥。它只是比较了和密钥匹配的公共材料 (比如，RSA密钥的指数和模量) 和/或密钥参数(比如，EC密钥的参数)。

这也意味着，比如，提供给key赋一个公钥值，该函数可能返回 true.

参数

cert: 证书。
key: 私钥。

返回值

如果给定的私钥 key 和证书 cert对应，返回true 否则返回 false .

User Contributed Notes

tomsie at toms dot ie 05-Dec-2017 01:51


This function DOES return TRUE if the key has a passphrase, you just need to set up the data in such a way that the function can understand it. It is not documented here.



This error message led me to the solution:



PHP Warning:  openssl_x509_check_private_key(): key array must be of the form array(0 =&gt; key, 1 =&gt; phrase)



So this works:



$certFile = file_get_contents('cert.crt');

$keyFile = file_get_contents('cert.key');

$keyPassphrase = "password1234";

$keyCheckData = array(0=>$keyFile,1=>$keyPassphrase);

$result = openssl_x509_check_private_key($certFile,$keyCheckData);

jared at enhancesoft dot com 24-Apr-2015 08:58


This function will return FALSE if the private key requires a pass phrase.