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libstrongswan » History » Version 5

Martin Willi, 08.02.2011 15:02
Refer to more complete plugin list

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h1. libstrongswan
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libstrongswan is the foundation library of the IKEv2 keying daemon. It is the
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base of all newer strongSwan components. 
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h2. Plugins
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libstrongswan itself also supports plugins to provide modular cryptographic 
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algorithms, database support or transport protocol implementations. Each plugin 
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implements the _plugin_t_ interface and registers itself at one of the factories:
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|credentials |Credential implementations, e.g. certificates or keys.|
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|crypto      |Crypto implementations, e.g. encryption algorithms or hashers.|
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|database    |Database wrappers to access different databases transparently.|
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|fetcher     |Transport helpers to fetch files, e.g. via HTTP/FTP.|
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<pre>
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  +-------------------------------------+
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  | libstrongswan           +---+ +-----+------+
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  |                         |   | |    aes     |
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  |                         |   | +-----+------+
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  | +-------------+         |   | +-----+------+
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  | | credentials |  ---->  | p | |    curl    |
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  | +-------------+         | l | +-----+------+
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  | +-------------+  <----  | u | +-----+------+
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  | | crypto      |         | g | |    des     |
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  | +-------------+  ---->  | i | +-----+------+
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  | +-------------+         | n | +-----+------+
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  | | database    |  <----  |   | |  fips_prf  |
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  | +-------------+         | l | +-----+------+
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  | +-------------+  ---->  | o | +-----+------+
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  | | fetcher     |         | a | |    gmp     |
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  | +-------------+  <----  | d | +-----+------+
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  |                         | e | +-----+------+
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  |                         | r | |    hmac    |
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  |                         |   | +-----+------+
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  |                         |   | +-----+------+
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  |                         |   | |    ...     |
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  |                         +---+ +-----+------+
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  +-------------------------------------+
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</pre>
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There is a growing [[PluginList|list of plugins]] available (see source:src/libstrongswan/plugins).