2

有私钥、公钥、x509 Pem 文件。我想从这些文件中获取有关 RSA 公钥的信息。

我可以通过shell脚本来确认它，如下所示。$ openssl x509 -in cert.pem -text

...

    Subject Public Key Info:
        Public Key Algorithm: rsaEncryption
        RSA Public Key: (2048 bit)
            Modulus (2048 bit):
                00:e1:92:dc:05:84:c7:e1:2d:db:f3:48:84:90:32:
                ...
                da:7d:2f:95:d2:ab:28:6e:6c:be:0a:af:e0:cb:24:
                18:db
            Exponent: 65537 (0x10001)

...

我可以以同样的方式在 PHP OpenSSL 库中获取 Modulus 和 Exponent 的值吗？

4

3 回答 3

6

您可以尝试以下方法：

$key = file_get_contents("root/to/private_key.pem");
$data = openssl_pkey_get_private($key);
$data = openssl_pkey_get_details($data);

$key = $data['key'];
$modulus = $data['rsa']['n'];
$exponent = $data['rsa']['e'];

echo "Modulus: $modulus <br>Exponent: $exponent";

如果回显 $exponent在屏幕上没有显示任何内容，您可以尝试var_dump($exponent)，否则var_dump($data)您会看到一些奇怪的字符。

于 2015-01-04T07:04:13.997 回答
1

使用phpseclib，一个纯 PHP X.509 实现：

$x509 = new File_X509();
$cert = $x509->loadX509('-----BEGIN CERTIFICATE-----
MIIDITCCAoqgAwIBAgIQT52W2WawmStUwpV8tBV9TTANBgkqhkiG9w0BAQUFADBM
MQswCQYDVQQGEwJaQTElMCMGA1UEChMcVGhhd3RlIENvbnN1bHRpbmcgKFB0eSkg
THRkLjEWMBQGA1UEAxMNVGhhd3RlIFNHQyBDQTAeFw0xMTEwMjYwMDAwMDBaFw0x
MzA5MzAyMzU5NTlaMGgxCzAJBgNVBAYTAlVTMRMwEQYDVQQIEwpDYWxpZm9ybmlh
MRYwFAYDVQQHFA1Nb3VudGFpbiBWaWV3MRMwEQYDVQQKFApHb29nbGUgSW5jMRcw
FQYDVQQDFA53d3cuZ29vZ2xlLmNvbTCBnzANBgkqhkiG9w0BAQEFAAOBjQAwgYkC
gYEA3rcmQ6aZhc04pxUJuc8PycNVjIjujI0oJyRLKl6g2Bb6YRhLz21ggNM1QDJy
wI8S2OVOj7my9tkVXlqGMaO6hqpryNlxjMzNJxMenUJdOPanrO/6YvMYgdQkRn8B
d3zGKokUmbuYOR2oGfs5AER9G5RqeC1prcB6LPrQ2iASmNMCAwEAAaOB5zCB5DAM
BgNVHRMBAf8EAjAAMDYGA1UdHwQvMC0wK6ApoCeGJWh0dHA6Ly9jcmwudGhhd3Rl
LmNvbS9UaGF3dGVTR0NDQS5jcmwwKAYDVR0lBCEwHwYIKwYBBQUHAwEGCCsGAQUF
BwMCBglghkgBhvhCBAEwcgYIKwYBBQUHAQEEZjBkMCIGCCsGAQUFBzABhhZodHRw
Oi8vb2NzcC50aGF3dGUuY29tMD4GCCsGAQUFBzAChjJodHRwOi8vd3d3LnRoYXd0
ZS5jb20vcmVwb3NpdG9yeS9UaGF3dGVfU0dDX0NBLmNydDANBgkqhkiG9w0BAQUF
AAOBgQAhrNWuyjSJWsKrUtKyNGadeqvu5nzVfsJcKLt0AMkQH0IT/GmKHiSgAgDp
ulvKGQSy068Bsn5fFNum21K5mvMSf3yinDtvmX3qUA12IxL/92ZzKbeVCq3Yi7Le
IOkKcGQRCMha8X2e7GmlpdWC1ycenlbN0nbVeSv3JUMcafC4+Q==
-----END CERTIFICATE-----');

$pubkey = $x509->getPublicKey();
$parts = $pubkey->getPublicKey(CRYPT_RSA_PUBLIC_FORMAT_RAW);
echo $parts['e'] . "\r\n\r\n" . $parts['n'];
于 2012-07-31T13:58:33.453 回答
0

你可能想要openssl_pkey_get_details($key).

openssl_pkey_get_private()这需要从or (?)生成的密钥资源openssl_pkey_get_public()，并将返回一个数组，其中包含键bits、key、type和第四个键，该键是rsa、dsa或dh取决于键之一。第四个键映射到另一个具有更多细节的数组；对于 RSA 密钥，此子数组包含您的模数n和指数e。

看到这个页面和相关页面。

（这些都没有经过测试；让我知道这是否适合你！）

于 2012-07-27T04:00:37.873 回答