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<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE erlref SYSTEM "erlref.dtd">
<erlref>
<header>
<copyright>
<year>2012</year>
<year>2013</year>
<holder>Ericsson AB, All Rights Reserved</holder>
</copyright>
<legalnotice>
The contents of this file are subject to the Erlang Public License,
Version 1.1, (the "License"); you may not use this file except in
compliance with the License. You should have received a copy of the
Erlang Public License along with this software. If not, it can be
retrieved online at http://www.erlang.org/.
Software distributed under the License is distributed on an "AS IS"
basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
the License for the specific language governing rights and limitations
under the License.
The Initial Developer of the Original Code is Ericsson AB.
</legalnotice>
<title>ssh_server_key_api</title>
</header>
<module>ssh_server_key_api</module>
<modulesummary>
-behaviour(ssh_server_key_api).
</modulesummary>
<description>
<p> Behaviour describing the API for an SSH server's public key handling.By implementing the callbacks defined
in this behavior it is possible to customize the SSH server's public key
handling. By default the SSH application implements this behavior
with help of the standard openssh files, see <seealso marker="SSH_app"> ssh(6)</seealso>.</p>
</description>
<section>
<title>DATA TYPES </title>
<p>Type definitions that are used more than once in this module
and/or abstractions to indicate the intended use of the data
type:</p>
<p> boolean() = true | false</p>
<p> string() = [byte()]</p>
<p> public_key() = #'RSAPublicKey'{}| {integer(), #'Dss-Parms'{}}| term()</p>
<p> private_key() = #'RSAPublicKey'{}| {integer(), #'Dss-Parms'{}}| term()</p>
<p> public_key_algorithm() = 'ssh-rsa'| 'ssh-dss' | atom()</p>
</section>
<funcs>
<func>
<name>Module:host_key(Algorithm, DaemonOptions) ->
{ok, Key} | {error, Reason}</name>
<fsummary>Fetches the hosts private key </fsummary>
<type>
<v>Algorithm = public_key_algorithm()</v>
<d> Host key algorithm. Should support 'ssh-rsa'| 'ssh-dss' but additional algorithms
can be handled.</d>
<v> DaemonOptions = proplists:proplist() </v>
<d>Options provided to <seealso marker="ssh#daemon-2">ssh:daemon/[2,3]</seealso></d>
<v> Key = private_key()</v>
<d> The private key of the host matching the <c>Algorithm</c></d>
<v>Reason = term() </v>
</type>
<desc>
<p>Fetches the hosts private key</p>
</desc>
</func>
<func>
<name>Module:is_auth_key(Key, User, DaemonOptions) -> Result</name>
<fsummary> Checks if the user key is authorized</fsummary>
<type>
<v> Key = public_key() </v>
<d> Normally an RSA or DSA public key but handling of other public keys can be added</d>
<v> User = string()</v>
<d> The user owning the public key</d>
<v> DaemonOptions = proplists:proplist() </v>
<d> Options provided to <seealso marker="ssh#daemon-2">ssh:daemon/[2,3]</seealso></d>
<v> Result = boolean()</v>
</type>
<desc>
<p> Checks if the user key is authorized </p>
</desc>
</func>
</funcs>
</erlref>
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