mitmproxy/doc-src/ssl.html

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The first time __mitmproxy__ or __mitmdump__ is run, a set of certificate files
for the mitmproxy Certificate Authority are created in the config directory
(~/.mitmproxy by default). The files are as follows:
<table class="table">
<tr>
<td class="nowrap">mitmproxy-ca.pem</td>
<td>The private key and certificate in PEM format.</td>
</tr>
<tr>
<td class="nowrap">mitmproxy-ca-cert.pem</td>
<td>The certificate in PEM format. Use this to distribute to most
non-Windows platforms.</td>
</tr>
<tr>
<td class="nowrap">mitmproxy-ca-cert.p12</td>
<td>The certificate in PKCS12 format. For use on Windows.</td>
</tr>
<tr>
<td class="nowrap">mitmproxy-ca-cert.cer</td>
<td>Same file as .pem, but with an extension expected by some Android
devices.</td>
</tr>
</table>
This CA is used for on-the-fly generation of dummy certificates for SSL
interception. Since your browser won't trust the __mitmproxy__ CA out of the
box (and rightly so), you will see an SSL cert warning every time you visit a
new SSL domain through __mitmproxy__. When you're testing a single site through
a browser, just accepting the bogus SSL cert manually is not too much trouble,
but there are a many circumstances where you will want to configure your
testing system or browser to trust the __mitmproxy__ CA as a signing root
authority.
Using a custom certificate
--------------------------
You can use your own certificate by passing the __--cert__ option to mitmproxy.
The certificate file is expected to be in the PEM format. You can generate
a certificate in this format using these instructions:
<pre class="terminal">
> openssl genrsa -out cert.key 8192
> openssl req -new -x509 -key cert.key -out cert.crt
(Specify the mitm domain as Common Name, e.g. *.google.com)
> cat cert.key cert.crt > cert.pem
> mitmproxy --cert=cert.pem
</pre>
Installing the mitmproxy CA
---------------------------
* [Firefox](@!urlTo("certinstall/firefox.html")!@)
* [OSX](@!urlTo("certinstall/osx.html")!@)
* [Windows 7](@!urlTo("certinstall/windows7.html")!@)
* [iPhone/iPad](@!urlTo("certinstall/ios.html")!@)
* [IOS Simulator](@!urlTo("certinstall/ios-simulator.html")!@)
* [Android](@!urlTo("certinstall/android.html")!@)