libapache2-mod-sts - 3.4.0-2+b2 main

A security token exchange module for Apache HTTP Server 2.x which allows for
exchanging arbitrary security tokens by calling into a remote Security Token
Service (STS).
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This Apache module allows for exchanging a security token (aka. "source
token") that is presented on an incoming HTTP request for another security
token (aka. "target token") by calling into a Security Token Service (STS) and
then include that target token on the propagated HTTP request to the content
or origin server.