如何使用 php 的 openssl_x509_parse 获取 SSL 证书哈希算法 OID

Question

我正在使用 php 的 OpenSSL 函数 (openssl_x509_parse) 来解析给定站点的 SSL 证书信息。示例代码：

$stream = stream_context_create(
    array(
        "ssl" => array(
            "allow_self_signed" => true,
            "capture_peer_cert" => true,
            "capture_peer_cert_chain" => true,
            "verify_peer" => false,
            "verify_peer_name" => false,
            "sni_enabled" => true,
        ),
    )
);
$streamRead = @stream_socket_client("ssl://whosebug.com:443", $streamErrNo, $streamErrStr, 30, STREAM_CLIENT_CONNECT, $stream);
if (!$streamErrNo && $streamRead) {
    $streamContext = stream_context_get_params($streamRead);
    $streamContextMeta = stream_get_meta_data($streamRead);
    $certChainsRes = $streamContext["options"]["ssl"]["peer_certificate_chain"];
    $certChainArr = array();
    for ($i = 0; $i < count($certChainsRes); $i++) {
        $certChainData = openssl_x509_parse($certChainsRes[$i]);
        var_dump($certChainData);
    }
}

代码运行良好，它为我提供了数据。示例数据。

array (size=16)
  'name' => string '/C=US/ST=NY/L=New York/O=Stack Exchange, Inc./CN=*.stackexchange.com' (length=68)
  'subject' => 
    array (size=5)
      'C' => string 'US' (length=2)
      'ST' => string 'NY' (length=2)
      'L' => string 'New York' (length=8)
      'O' => string 'Stack Exchange, Inc.' (length=20)
      'CN' => string '*.stackexchange.com' (length=19)
  'hash' => string '07cc7bb0' (length=8)
  'issuer' => 
    array (size=4)
      'C' => string 'US' (length=2)
      'O' => string 'DigiCert Inc' (length=12)
      'OU' => string 'www.digicert.com' (length=16)
      'CN' => string 'DigiCert SHA2 High Assurance Server CA' (length=38)
  'version' => int 2
  'serialNumber' => string '9833040086282421696121167723365753840' (length=37)
  'serialNumberHex' => string '0765C64E74E591D68039CA2A847563F0' (length=32)
  'validFrom' => string '181005000000Z' (length=13)
  'validTo' => string '190814120000Z' (length=13)
  'validFrom_time_t' => int 1538697600
  'validTo_time_t' => int 1565784000
  'signatureTypeSN' => string 'RSA-SHA256' (length=10)
  'signatureTypeLN' => string 'sha256WithRSAEncryption' (length=23)
  'signatureTypeNID' => int 668

问题：

1：我得到了 signatureTypeSN、signatureTypeLN 等详细信息，
signatureTypeNID 但我怎样才能得到签名算法 ID (Hash
算法 OID）例如。 sha256WithRSAEncryption => 1.2.840.113549.1.1.11
2：这些细节表明证书的版本是 2 'version' => int 2 但浏览器显示证书版本为 3 ![SSL Certificate Details 中的截图浏览器]1

P.S：代码是运行在 Ubuntu 18.04 服务器上 php7.3。我使用的浏览器是 Windows 10.

上的 Mozilla Firefox

Answer 1

#1。版本

关于版本号（来自RFC：https://www.rfc-editor.org/rfc/rfc5280#section-4.1.2.1）

4.1.2.1. Version

This field describes the version of the encoded certificate. When extensions are used, as expected in this profile, version MUST be 3 (value is 2). If no extensions are present, but a UniqueIdentifier is present, the version SHOULD be 2 (value is 1); however, the version MAY be 3. If only basic fields are present, the version SHOULD be 1 (the value is omitted from the certificate as the default value); however, the version MAY be 2 or 3.

Implementations SHOULD be prepared to accept any version certificate. At a minimum, conforming implementations MUST recognize version 3 certificates.

版本 2 证书的生成不是预期的基于此配置文件的实现。

这意味着输出中的版本 2 等于证书的版本 3。

#2。 OID 关于问题的第一部分，最简单的方法是找到列表并将其实现为数组然后正常替换。其中之一是我在 https://www.rfc-editor.org/rfc/rfc7427 上找到的（搜索 oid = ）

同样在前一个RFC 7427 (https://www.rfc-editor.org/rfc/rfc5280)中你可以找到那些OID

如何使用 php 的 openssl_x509_parse 获取 SSL 证书哈希算法 OID

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