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  • Committer: Teddy Hogeborn
  • Date: 2019-02-11 06:14:29 UTC
  • Revision ID: teddy@recompile.se-20190211061429-n6n5zk29iatshlb3
Fix Debian package dependencies

* debian/control (Build-Depends): Changed GnuTLS dependencies to
                                  "libgnutls30 (>= 3.3.0),
                                  libgnutls28-dev (>= 3.6.6) |
                                  libgnutls28-dev (<< 3.6.0)".  (We
                                  can't depend on the virtual package
                                  "gnutls-dev", since we need the
                                  version restrictions.)
  (Package: mandos/Depends): Remove dependency on libgnutls28-dev
                             package.
  (Package: mandos/Suggests): New; set to "libc6-dev,
                              c-compiler". (Used to find value of
                              "SO_BINDTODEVICE").
  (Package: mandos-client/Depends): Don't depend on openssl anymore;
                                    instead depend on either a
                                    gnutls-bin (>= 3.6.6) (in which
                                    case TLS key generation will
                                    work), or on libgnutls30 (<<
                                    3.6.0) (in which case TLS key
                                    generation will not be needed).

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Lines of Context:
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The Mandos server announces itself as a Zeroconf service of type
2
 
"_mandos._tcp". The Mandos client sends a line of text where the first
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whitespace-separated field is the protocol version, which currently is
4
 
"1".  The client and server then start a TLS protocol handshake with a
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slight quirk: the Mandos server program acts as a TLS "client" while
6
 
the connecting Mandos client acts as a TLS "server".  The Mandos
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client must supply an OpenPGP certificate, and the fingerprint of this
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certificate is used by the Mandos server to look up (in a list read
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from a file at start time) which binary blob to give the client.  No
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other authentication or authorization is done by the server.
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| Mandos Client                              |     | Mandos Server |
13
 
|--------------------------------------------+-----+---------------|
14
 
| Connect                                    |     |               |
15
 
| "1\r\n"                                    | ->  |               |
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| TLS handshake                              | <-> | TLS handshake |
17
 
| OpenPGP public key (part of TLS handshake) | ->  |               |
18
 
|                                            | <-  | Binary blob   |
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|                                            |     | Close         |