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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 | <html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Chapter 1. libkcapi - Linux Kernel Crypto API User Space Interface Library</title><meta name="generator" content="DocBook XSL Stylesheets V1.79.1"><link rel="home" href="index.html" title="Linux Kernel Crypto API User Space Interface Library"><link rel="up" href="index.html" title="Linux Kernel Crypto API User Space Interface Library"><link rel="prev" href="index.html" title="Linux Kernel Crypto API User Space Interface Library"><link rel="next" href="ch01s02.html" title="Purpose Of AF_ALG"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 1. libkcapi - Linux Kernel Crypto API User Space Interface Library</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="index.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="ch01s02.html">Next</a></td></tr></table><hr></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="Intro"></a>Chapter 1. libkcapi - Linux Kernel Crypto API User Space Interface Library</h1></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl class="toc"><dt><span class="sect1"><a href="Intro.html#idm28">Version Number Schema</a></span></dt><dt><span class="sect1"><a href="ch01s02.html">Purpose Of AF_ALG</a></span></dt></dl></div><p>This documentation applies to version 1.0.3.</p><p>
The Linux kernel exports a network interface of type AF_ALG to allow user
space to utilize the kernel crypto API.
</p><p>
libkcapi uses this network interface and exports easy to use APIs so that
a developer does not need to consider the low-level network interface
handling.
</p><p>
The library does not implement any cipher algorithms. All consumer requests
are sent to the kernel for processing. Results from the kernel crypto API
are returned to the consumer via the library API.
</p><p>
The kernel interface and therefore this library can be used by unprivileged
processes.
</p><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="idm28"></a>Version Number Schema</h2></div></div></div><p>
The version numbers for this library have the following schema:
MAJOR.MINOR.PATCHLEVEL
</p><p>
Changes in the major number implies API and ABI incompatible changes, or
functional changes that require consumer to be updated (as long as this
number is zero, the API is not considered stable and can change without a
bump of the major version).
</p><p>
Changes in the minor version are API compatible, but the ABI may change.
Functional enhancements only are added. Thus, a consumer can be left
unchanged if enhancements are not considered. The consumer only needs to
be recompiled.
</p><p>
Patchlevel changes are API / ABI compatible. No functional changes, no
enhancements are made. This release is a bug fixe release only. The
consumer can be left unchanged and does not need to be recompiled.
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