gentoo-overlay/app-crypt/hmaccalc/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
	<!-- maintainer-needed -->
<use>
<flag name="fips">Enable NSS FIPS mode and support only the FIPS-compliant functions</flag>
</use>
<longdescription>
hmaccalc can be used to compute HMAC (hash-based message authentication code)
values for files. An HMAC is similar in concept to a message digest, except in
that its calculation also incorporates a key which must be known to both the
party generating the HMAC and the party verifying the HMAC. 
</longdescription>
</pkgmetadata>