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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | <html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Key Derivation Functions</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="API.html" title="Chapter 3. Programming Interface"><link rel="prev" href="API-kcapi-kpp-ssgen-aio.html" title="kcapi_kpp_ssgen_aio"><link rel="next" href="API-kcapi-kdf-dpi.html" title="kcapi_kdf_dpi"></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">Key Derivation Functions</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-kcapi-kpp-ssgen-aio.html">Prev</a> </td><th width="60%" align="center">Chapter 3. Programming Interface</th><td width="20%" align="right"> <a accesskey="n" href="API-kcapi-kdf-dpi.html">Next</a></td></tr></table><hr></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="idm5633"></a>Key Derivation Functions</h2></div></div></div><div class="toc"><dl class="toc"><dt><span class="refentrytitle"><a href="API-kcapi-kdf-dpi.html"><span class="phrase">kcapi_kdf_dpi</span></a></span><span class="refpurpose"> —
Double Pipeline Mode Key Derivation Function
</span></dt><dt><span class="refentrytitle"><a href="API-kcapi-kdf-fb.html"><span class="phrase">kcapi_kdf_fb</span></a></span><span class="refpurpose"> —
Feedback Mode Key Derivation Function
</span></dt><dt><span class="refentrytitle"><a href="API-kcapi-kdf-ctr.html"><span class="phrase">kcapi_kdf_ctr</span></a></span><span class="refpurpose"> —
Counter Mode Key Derivation Function
</span></dt><dt><span class="refentrytitle"><a href="API-kcapi-pbkdf.html"><span class="phrase">kcapi_pbkdf</span></a></span><span class="refpurpose"> —
Password-based Key Derivation Function
</span></dt><dt><span class="refentrytitle"><a href="API-kcapi-pbkdf-iteration-count.html"><span class="phrase">kcapi_pbkdf_iteration_count</span></a></span><span class="refpurpose"> —
Calculate numbers of iterations for a PBKDF
</span></dt><dt><span class="refentrytitle"><a href="API-kcapi-hkdf.html"><span class="phrase">kcapi_hkdf</span></a></span><span class="refpurpose"> —
Extract-and-Expand HKDF (RFC5869)
</span></dt></dl></div><p>
</p><p>
API function calls used to invoke a KDF.
The KDF functions are based on a message digest or keyed message digest
function. The caller must have the handle allocated with kcapi_md_init.
If the caller wishes to use a keyed message digest, the caller must invoke
kcapi_md_setkey before those functions.
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