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<a href="https://gitlab.com/dueno">Daiki Ueno</a> created an issue: <a href="https://gitlab.com/gnutls/gnutls/-/issues/1284">#1284</a>
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<p dir="auto">FIPS140-3 IG <a href="https://csrc.nist.gov/CSRC/media/Projects/cryptographic-module-validation-program/documents/fips%20140-3/FIPS%20140-3%20IG.pdf#page=56" rel="nofollow noreferrer noopener" target="_blank">10.3.A</a> mentions:</p>
<blockquote dir="auto">
<p>if the module implements SHA-3 permutation-based and/or extendable-output functions (see IG C.C and
FIPS 202):</p>
<ul>
<li>At the minimum, the cryptographic module shall perform a CAST for one of the functions defined in
FIPS 202: SHA3-224, SHA3-256, SHA3-384, SHA3-512, SHAKE128 and SHAKE256, no matter
how many of these functions the module may be designed to use.</li>
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<p dir="auto">GnuTLS currently doesn't perform self-tests for SHAKE256 while it's provided.</p>

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