reference/password/setup.xml
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<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<chapter xml:id="password.setup">
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<chapter xml:id="password.setup" xmlns:xlink="http://www.w3.org/1999/xlink">
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&reftitle.setup;
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<section xml:id="password.requirements">
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&reftitle.required;
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&no.requirement;
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<para>
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For Argon2 password hashing, <link xlink:href="&url.libargon2;">libargon2</link>
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is required, though. As of PHP 7.3.0, libargon2 version 20161029 or later is
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required.
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</para>
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</section>
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<section xml:id="password.installation">
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&reftitle.install;
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&no.install;
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<para>
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To enable Argon2 password hashing, however, PHP must be built with libargon2
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support using the <option role="configure">--with-password-argon2</option>
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configure option.
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</para>
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<para>
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Prior to PHP 8.1.0, it was possible to specify the argon2 directory with
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<option role="configure">--with-password-argon2[=DIR]</option>.
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</para>
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</section>
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<section xml:id="password.configuration">
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