#421: emulated AirPort Express as audio source
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Reporter: albert | Owner: lennart
Type: enhancement | Status: new
Priority: low | Milestone:
Component: daemon | Severity: normal
Resolution: | Keywords:
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Comment (by albert):
Hi Coling,
Thank you very much for pointing that out. That is really a pity.
To point it out more clearly, we basically have to get the private RSA key
which belongs to this public RSA key:
{{{
152 static int rsa_encrypt(uint8_t *text, int len, uint8_t *res) {
153 const char n[] =
154
"59dE8qLieItsH1WgjrcFRKj6eUWqi+bGLOX1HL3U3GhC/j0Qg90u3sG/1CUtwC"
155
"5vOYvfDmFI6oSFXi5ELabWJmT2dKHzBJKa3k9ok+8t9ucRqMd6DZHJ2YCCLlDR"
156
"KSKv6kDqnw4UwPdpOMXziC/AMj3Z/lUVX1G7WSHCAWKf1zNS1eLvqr+boEjXuB"
157
"OitnZ/bDzPHrTOZz0Dew0uowxf/+sG+NCK3eQJVxqcaJ/vEHKIVd2M+5qL71yJ"
158
"Q+87X6oV3eaYvt3zWZYD6z5vYTcrtij2VZ9Zmni/UAaHqn9JdsBWLUEpVviYnh"
159 "imNVvYFZeCXg/IdTQ+x4IRdiXNv5hEew==";
160 const char e[] = "AQAB";
...
}}}
(code from
http://www.pulseaudio.org/browser/src/modules/raop/raop_client.c)
The private key should be stored somewhere on the AirPort Express and is
used to decrypt the message (as I have seen from the code, this RSA
encryption is only used to transfer the AES key, whereby that does not
really matter for the problem).
I sadly don't own an Airport Express myself, but for somebody who has
access to one, wouldn't it be possible somehow to read the key from the
device? (I guess that the key is not stored in any of their firmware
updates, which would be a bit easier to read (or is it?).)
--
Ticket URL: <http://www.pulseaudio.org/ticket/421#comment:4>
PulseAudio <http://pulseaudio.org/>
The PulseAudio Sound Server
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