ちょいと小一時間ハマったのでメモ。
PHPのOpenSSLの openssl_pkcs7_sign だが、マニュアルのサンプルにあるように
openssl_pkcs7_sign(“msg.txt”, “signed.txt”, “file://email.pem”, array(“file://email.pem”, “123456”), $headers);
みたいにやると
Warning: openssl_pkcs7_sign(): error getting private key in /home/nat/test/7sign.php on line 10
のようにエラーが出る。
これは、realpath()を使ってやることによって回避できるようだ。すなわち、
openssl_pkcs7_sign(realpath(“msg.txt”), realpath(“signed.txt”), “file://”.realpath(email.pem”), array(“file:”.realpath(“email.pem”), “123456”), $headers);
注:signed.txt も touch しておかなければダメ。
そうすると、こんな感じの signed.txt ができます。ちなみに、Header部分は署名は掛かっていません。
To: joes@example.com
From: HQ
Subject: Eyes only
MIME-Version: 1.0
Content-Type: multipart/signed; protocol=”application/x-pkcs7-signature”; micalg=sha1; boundary=”—-2ED342647462900B363AC40502411647″This is an S/MIME signed message
——2ED342647462900B363AC40502411647
昨日の夜からようやく Artifact Binding 1.0 draft 04 に着手。
22:00-02:00 に書いて、03:30 まで仮眠、その後、北軽井沢から東京へ車で移動(03:50-07:20). 朝食、風呂のあと、10:00 まで加筆。とりあえず、bitbucket に push して、openid-specs-ab 宛にメール。Breno と会話。OAuth2.0 にあわせて、Response は JSON に統一。(その結果、Key-Value Form Encoding が無くなった。)その後、Johnと会話。Magic Signature の Padding がなぁ、という話。ちなみに、現行ドラフトの最新版のHTMLコピーは、こちら。正式なレポジトリは、http://bitbucket.org/openid/ab/ 。
——2ED342647462900B363AC40502411647
Content-Type: application/x-pkcs7-signature; name=”smime.p7s”
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename=”smime.p7s”MIIFPgYJKoZIhvcNAQcCoIIFLzCCBSsCAQExCzAJBgUrDgMCGgUAMAsGCSqGSIb3
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hvcNAwICAgCAMA0GCCqGSIb3DQMCAgFAMAcGBSsOAwIHMA0GCCqGSIb3DQMCAgEo
MA0GCSqGSIb3DQEBAQUABIGAibAPLZi+XC5VdUVS5VxWXO5W13tt/hUA4J81UQmm
9FNlBf6AxRopL6qO8rgF+1e+n2bPpqBXV8xI47PndEHtK7a/3uHTKTagrweXCfb9
1jlJen1KKctPdeQis3qZllEKu+rCm8FjfDAGVfL1f41wTjzFYwK6JVpNrubXCQYS
tDw=——2ED342647462900B363AC40502411647–
暗号化もする場合は、署名の時は header は空にしておいて、暗号化の時に足す方が良いですね。
$headers = array(“To” => “joes@example.com”,
“From” => “HQ“,
“Subject” => “Eyes only”);if (openssl_pkcs7_sign(realpath(“msg.txt”),
realpath(“signed.txt”),
‘file://’.realpath(“signcert.pem”),
array(‘file://’.realpath(“signcert-key.pem”),”a_password”), // private key
array()
)) {
// message signed
}$pubkey = file_get_contents(“enc_cert.pem”);
//encrypt the message, now put in the headers.
openssl_pkcs7_encrypt(realpath(“signed.txt”), realpath(“enc.txt”),
$pubkey,$headers,0,1);
そうすると、こんな感じの enc.txt ができます。
To: joes@example.com
From: HQ
Subject: Eyes only
MIME-Version: 1.0
Content-Disposition: attachment; filename=”smime.p7m”
Content-Type: application/x-pkcs7-mime; smime-type=enveloped-data; name=”smime.p7m”
Content-Transfer-Encoding: base64MIINEgYJKoZIhvcNAQcDoIINAzCCDP8CAQAxgfswgfgCAQAwYTBaMQswCQYDVQQG
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@_Nat Zoneをもっと見る
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