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    OpenSSL 関数

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    User Contributed Notes 24 notes

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    25
    dan -AT- NOSPAM danschafer DOT netTT
    17 years ago
    Currently, all OpenSSL Functions defined in PHP only utilize the PEM format. Use the following code to convert from DER to PEM and PEM to DER.

    <?php
    $pem_data     = file_get_contents($cert_path.$pem_file);
    $pem2der = pem2der($pem_data);

    $der_data = file_get_contents($cert_path.$der_file);
    $der2pem = der2pem($der_data);

    function     pem2der($pem_data) {
    $begin = "CERTIFICATE-----";
    $end = "-----END";
    $pem_data = substr($pem_data, strpos($pem_data, $begin)+strlen($begin));
    $pem_data = substr($pem_data, 0, strpos($pem_data, $end));
    $der = base64_decode($pem_data);
    return     $der;
    }

    function     der2pem($der_data) {
    $pem = chunk_split(base64_encode($der_data), 64, "\n");
    $pem = "-----BEGIN CERTIFICATE-----\n".$pem."-----END CERTIFICATE-----\n";
    return     $pem;
    }
    ?>
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    9
    skippy zuavra net
    19 years ago
    In case you're wondering what's a "correctly hashed" directory for the use with cainfo: it's simply a directory which contains CA public certificates in PEM/X.509 format. You can get such certificates either from the CA's website (they advertise it in visible places) or from your browser. In Explorer for instance you can click on the little yellow padlock, go to the CA entry and export it.

    The only trick with the directory is that file names must be in the form "hash.#". The "hash" part is the 8-digit hex hash of the certificate, while the # part is a number which serves to differentiate certificates which give the same hash (yes, it can happen with certificates coming from the same CA). Usually # is 0, but you also can use 1, 2 and so on when having more certs with the same hash.

    In order to obtain the hash of a certificate you can use the openssl command line utility like this:

    openssl x509 -hash -in certfile.cer | head -1
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    5
    peter dot mescalchin @ geemail dot com
    18 years ago
    For w32 users to enable OpenSSL support. As well as copying "libeay32.dll" to the windows system32 folder you also need to copy "ssleay32.dll". The documentation above should probably be updated to note this.

    This requirement was documented at the libcurl pages:

    http://curl.haxx.se/libcurl/php/install.html#windows
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    3
    kraven at kraven dot org
    11 years ago
    If you want to verify that a csr was generated properly from your private key you can do the following:

    <?php
    $countryName     = "UK";
    $stateOrProvinceName = "London";
    $localityName = "Blah";
    $organizationName = "Blah1";
    $organizationalUnitName = "Blah2";
    $commonName = "Joe Bloggs";
    $emailAddress = "openssl@example.com";

    $dn = array(
    "countryName" => $countryName,
    "stateOrProvinceName" => $stateOrProvinceName,
    "localityName" => $localityName,
    "organizationName" => $organizationName,
    "organizationalUnitName" => $organizationalUnitName,
    "commonName" => $commonName,
    "emailAddress" => $emailAddress
    );

    $badPriv = 'foo';

    // generate a bad csr
    $badCsr = openssl_csr_new($dn, $badPriv);

    // generate private key
    $priv = openssl_pkey_new();

    // generate csr
    $csr = openssl_csr_new($dn, $priv);

    $badCsrDetails = openssl_pkey_get_details(openssl_csr_get_public_key($badCsr));
    $privDetails = openssl_pkey_get_details($priv);
    $csrDetails = openssl_pkey_get_details(openssl_csr_get_public_key($csr));

    echo     md5($badCsrDetails['rsa']['n']);
    echo     "\nDoes not match\n";
    echo     md5($privDetails['rsa']['n']);
    echo     "\nMatches\n";
    echo     md5($csrDetails['rsa']['n']);
    echo     "\n";
    ?>

    This output is an md5 hash of the modulus. The same check can be accomplished with openssl:
    openssl rsa -noout -modulus -in server.key | openssl md5
    openssl req -noout -modulus -in server.csr | openssl md5
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    2
    jts
    16 years ago
    Win32 users having trouble getting php_openssl to work should make sure that they replace ALL the versions of libeay32.dll and ssleay32.dll, with the ones included with PHP. This is especially true while using Apache2 and OpenSSL together, as some OpenSSL win32 packages include older versions of these two files.
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    2
    greensweater
    19 years ago
    "You need to have a valid openssl.cnf installed for this function to operate correctly" includes most openssl functions. You can force php to find your openssl.cnf file as follows:

    $config = array('config'=>'/path/to/openssl.cnf');
    $pkey = openssl_pkey_new($config);
    $csr = openssl_csr_new('MyCSR',$pkey,$config);
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    1
    rahuul at yours dot com
    14 years ago
    for changing serial no of cert following is the solution:

    <?php
    $sscert     = openssl_csr_sign($csr, $cacert, $privkey, $days,$config,$serial);
    ?>
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    1
    yabba dabba
    18 years ago
    The php4 distribution for Windows/IIS has a README-SSL.txt which strongly implies that just the path needs to be added to the OPENSLL_CONF variable in the server's environment variables. Be sure to add the file name and extension too.

    E.g.: c:\php-4.3.11\openssl\openssl.cnf
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    1
    web at mburda dot com
    16 years ago
    There is a little problem with Matt Alexander's code below.
    Both public and private key are generated internally and saved into OpenSSL class object properties but only private key is then used.
    Public key is taken from an external file and if it differs from the one stored internally, OpenSSL fails to decrypt the text.
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