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<p style="color: #777777;">
<a href="https://gitlab.com/dueno" style="color: #1068bf;">Daiki Ueno</a>
started a new
discussion on <a href="https://gitlab.com/gnutls/gnutls/-/merge_requests/1607#note_1017257958" style="color: #1068bf;">lib/fips.c</a>:
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<td class="line_content" style="padding: inherit;"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'> <span id="LC900" class="line" lang="c"><span class="nf" style="color: #900; font-weight: 600;">gnutls_fips140_run_self_tests</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">void</span><span class="p">)</span></span>
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901
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<td class="new_line diff-line-num" data-linenumber="901" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
901
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<td class="line_content" style="padding: inherit;"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'> <span id="LC901" class="line" lang="c"><span class="p">{</span></span>
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<td class="old_line diff-line-num" data-linenumber="902" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
902
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<td class="new_line diff-line-num" data-linenumber="902" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
902
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<td class="line_content" style="padding: inherit;"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'> <span id="LC902" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#ifdef ENABLE_FIPS140</span></span>
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<td class="old_line diff-line-num old" data-linenumber="903" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: inherit;" align="right" bgcolor="#f9d7dc">
903
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<td class="new_line diff-line-num old" data-linenumber="903" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: inherit;" align="right" bgcolor="#f9d7dc">
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<td class="line_content old" style="padding: inherit;" bgcolor="#fbe9eb"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'>-<span id="LC903" class="line" lang="c"> <span class="kt" style="color: #458; font-weight: 600;">int</span> <span class="n" style="color: #333;">ret</span><span class="p">;</span></span>
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<td class="old_line diff-line-num new" data-linenumber="904" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
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<td class="new_line diff-line-num new" data-linenumber="903" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
903
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<td class="line_content new" style="padding: inherit;" bgcolor="#ecfdf0"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'>+<span id="LC903" class="line" lang="c"> <span class="kt" style="color: #458; font-weight: 600;">int</span> <span class="n" style="color: #333;">ret</span><span class="p"><span class="idiff left addition" style="background-color: #c7f0d2;">,</span></span><span class="idiff addition" style="background-color: #c7f0d2;"> </span><span class="n" style="color: #333;"><span class="idiff addition" style="background-color: #c7f0d2;">fips_ctx_ret</span></span><span class="idiff addition" style="background-color: #c7f0d2;"> </span><span class="o" style="font-weight: 600;"><span class="idiff addition" style="background-color: #c7f0d2;">=</span></span><span class="idiff addition" style="background-color: #c7f0d2;"> </span><span class="o" style="font-weight: 600;"><span class="idiff addition" style="background-color: #c7f0d2;">-</span></span><span class="mi" style="color: #099;"><span class="idiff right addition" style="background-color: #c7f0d2;">1</span></span><span class="p">;</span></span>
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904
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<td class="new_line diff-line-num" data-linenumber="904" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
904
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<td class="line_content" style="padding: inherit;"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'> <span id="LC904" class="line" lang="c"> <span class="kt" style="color: #458; font-weight: 600;">unsigned</span> <span class="n" style="color: #333;">prev_lib_state</span><span class="p">;</span></span>
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<td class="old_line diff-line-num new" data-linenumber="905" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
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<td class="new_line diff-line-num new" data-linenumber="905" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
905
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<td class="line_content new" style="padding: inherit;" bgcolor="#ecfdf0"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'>+<span id="LC905" class="line" lang="c"> <span class="n" style="color: #333;">gnutls_fips140_context_t</span> <span class="n" style="color: #333;">fips_context</span><span class="p">;</span></span>
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<td class="new_line diff-line-num new" data-linenumber="906" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
906
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<td class="line_content new" style="padding: inherit;" bgcolor="#ecfdf0"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'>+<span id="LC906" class="line" lang="c"></span>
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<td class="old_line diff-line-num new" data-linenumber="905" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
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<td class="new_line diff-line-num new" data-linenumber="907" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
907
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<td class="line_content new" style="padding: inherit;" bgcolor="#ecfdf0"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'>+<span id="LC907" class="line" lang="c"> <span class="cm" style="color: #998; font-style: italic;">/* Save the FIPS context, because self tests change it */</span></span>
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<td class="old_line diff-line-num new" data-linenumber="905" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
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<td class="new_line diff-line-num new" data-linenumber="908" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
908
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<td class="line_content new" style="padding: inherit;" bgcolor="#ecfdf0"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'>+<span id="LC908" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">gnutls_fips140_mode_enabled</span><span class="p">()</span> <span class="o" style="font-weight: 600;">!=</span> <span class="n" style="color: #333;">GNUTLS_FIPS140_DISABLED</span><span class="p">)</span> <span class="p">{</span></span>
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<td class="new_line diff-line-num new" data-linenumber="909" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
909
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<td class="line_content new" style="padding: inherit;" bgcolor="#ecfdf0"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'>+<span id="LC909" class="line" lang="c"> <span class="n" style="color: #333;">fips_ctx_ret</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">gnutls_fips140_context_init</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">fips_context</span><span class="p">);</span></span>
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<p dir="auto" style="color: #303030; margin: 0 0 16px;" align="initial"><code style='font-size: 90%; color: #1f1f1f; word-wrap: break-word; background-color: #f0f0f0; border-radius: 4px; margin-top: 0; font-weight: inherit; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; white-space: pre-wrap; overflow-wrap: break-word; word-break: keep-all; padding: 2px 4px;'>fips_context</code> needs to be released with <code style='font-size: 90%; color: #1f1f1f; word-wrap: break-word; background-color: #f0f0f0; border-radius: 4px; font-weight: inherit; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; white-space: pre-wrap; overflow-wrap: break-word; word-break: keep-all; padding: 2px 4px;'>gnutls_fips140_context_deinit</code>. Having that in mind, maybe a simpler logic would be:</p>
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<pre class="code highlight js-syntax-highlight language-c" lang="c" v-pre="true" style="display: block; font-size: 13px; color: #303030; line-height: 1.6em; overflow-x: auto; border-radius: 2px; position: relative; font-family: monospace; word-break: break-all; word-wrap: break-word; background-color: #fff; -premailer-cellpadding: 0; -premailer-cellspacing: 0; -premailer-width: 100%; margin: 0 0 16px; padding: 12px; border: 1px solid #dbdbdb;"><code style='font-size: inherit; color: inherit; word-wrap: normal; word-break: keep-all; background-color: inherit; border-radius: 4px; white-space: pre; margin-top: 0; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; overflow-wrap: normal; padding: unset;'><span id="LC1" class="line" lang="c" style="margin-top: 0;"><span class="n" style="margin-top: 0; color: #333;">gnutls_fips140_context_t</span> <span class="n" style="color: #333;">fips_context</span> <span class="o" style="font-weight: 600;">=</span> <span class="nb" style="color: #0086b3;">NULL</span><span class="p">;</span></span>
<span id="LC2" class="line" lang="c"></span>
<span id="LC3" class="line" lang="c"><span class="cm" style="margin-top: 0; color: #998; font-style: italic;">/* Save the FIPS context, because self tests change it */</span></span>
<span id="LC4" class="line" lang="c"><span class="k" style="margin-top: 0; font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">gnutls_fips140_mode_enabled</span><span class="p">()</span> <span class="o" style="font-weight: 600;">!=</span> <span class="n" style="color: #333;">GNUTLS_FIPS140_DISABLED</span><span class="p">)</span> <span class="p">{</span></span>
<span id="LC5" class="line" lang="c"> <span class="k" style="margin-top: 0; font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">gnutls_fips140_context_init</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">fips_context</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><</span> <span class="mi" style="color: #099;">0</span><span class="p">)</span> <span class="p">{</span></span>
<span id="LC6" class="line" lang="c"> <span class="cm" style="margin-top: 0; color: #998; font-style: italic;">/* some error handling */</span></span>
<span id="LC7" class="line" lang="c"> <span class="k" style="margin-top: 0; font-weight: 600;">goto</span> <span class="n" style="color: #333;">error</span><span class="p">;</span></span>
<span id="LC8" class="line" lang="c"> <span class="p" style="margin-top: 0;">}</span></span>
<span id="LC9" class="line" lang="c"> <span class="k" style="margin-top: 0; font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">gnutls_fips140_push_context</span><span class="p">(</span><span class="n" style="color: #333;">fips_context</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><</span> <span class="mi" style="color: #099;">0</span><span class="p">)</span> <span class="p">{</span></span>
<span id="LC10" class="line" lang="c"> <span class="cm" style="margin-top: 0; color: #998; font-style: italic;">/* some error handling */</span></span>
<span id="LC11" class="line" lang="c"> <span class="k" style="margin-top: 0; font-weight: 600;">goto</span> <span class="n" style="color: #333;">error</span><span class="p">;</span></span>
<span id="LC12" class="line" lang="c"> <span class="p" style="margin-top: 0;">}</span></span>
<span id="LC13" class="line" lang="c"><span class="p" style="margin-top: 0;">}</span></span>
<span id="LC14" class="line" lang="c"><span class="p" style="margin-top: 0;">...</span></span>
<span id="LC15" class="line" lang="c"><span class="k" style="margin-top: 0; font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">gnutls_fips140_mode_enabled</span><span class="p">()</span> <span class="o" style="font-weight: 600;">!=</span> <span class="n" style="color: #333;">GNUTLS_FIPS140_DISABLED</span><span class="p">)</span> <span class="p">{</span></span>
<span id="LC16" class="line" lang="c"> <span class="k" style="margin-top: 0; font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">gnutls_fips140_pop_context</span><span class="p">()</span> <span class="o" style="font-weight: 600;"><</span> <span class="mi" style="color: #099;">0</span><span class="p">)</span> <span class="p">{</span></span>
<span id="LC17" class="line" lang="c"> <span class="cm" style="margin-top: 0; color: #998; font-style: italic;">/* some error handling */</span></span>
<span id="LC18" class="line" lang="c"> <span class="k" style="margin-top: 0; font-weight: 600;">goto</span> <span class="n" style="color: #333;">error</span><span class="p">;</span></span>
<span id="LC19" class="line" lang="c"> <span class="p" style="margin-top: 0;">}</span></span>
<span id="LC20" class="line" lang="c"><span class="p" style="margin-top: 0;">}</span></span>
<span id="LC21" class="line" lang="c"></span>
<span id="LC22" class="line" lang="c"><span class="n" style="margin-top: 0; color: #333;">error</span><span class="o" style="font-weight: 600;">:</span></span>
<span id="LC23" class="line" lang="c"> <span class="n" style="margin-top: 0; color: #333;">gnutls_fips140_context_deinit</span><span class="p">(</span><span class="n" style="color: #333;">fips_context</span><span class="p">);</span></span></code></pre>
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<p dir="auto" style="color: #303030; margin: 0 0 16px;" align="initial">Or, if we don't want to treat those errors hard:</p>
<div class="gl-relative markdown-code-block js-markdown-code" style="margin-bottom: 0;">
<pre class="code highlight js-syntax-highlight language-c" lang="c" v-pre="true" style="display: block; font-size: 13px; color: #303030; line-height: 1.6em; overflow-x: auto; border-radius: 2px; position: relative; font-family: monospace; word-break: break-all; word-wrap: break-word; background-color: #fff; -premailer-cellpadding: 0; -premailer-cellspacing: 0; -premailer-width: 100%; margin: 0 0 16px; padding: 12px; border: 1px solid #dbdbdb;"><code style='font-size: inherit; color: inherit; word-wrap: normal; word-break: keep-all; background-color: inherit; border-radius: 4px; white-space: pre; margin-top: 0; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; overflow-wrap: normal; padding: unset;'><span id="LC1" class="line" lang="c" style="margin-top: 0;"><span class="n" style="margin-top: 0; color: #333;">gnutls_fips140_context_t</span> <span class="n" style="color: #333;">fips_context</span> <span class="o" style="font-weight: 600;">=</span> <span class="nb" style="color: #0086b3;">NULL</span><span class="p">;</span></span>
<span id="LC2" class="line" lang="c"></span>
<span id="LC3" class="line" lang="c"><span class="cm" style="margin-top: 0; color: #998; font-style: italic;">/* Save the FIPS context, because self tests change it */</span></span>
<span id="LC4" class="line" lang="c"><span class="k" style="margin-top: 0; font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">gnutls_fips140_mode_enabled</span><span class="p">()</span> <span class="o" style="font-weight: 600;">!=</span> <span class="n" style="color: #333;">GNUTLS_FIPS140_DISABLED</span><span class="p">)</span> <span class="p">{</span></span>
<span id="LC5" class="line" lang="c"> <span class="k" style="margin-top: 0; font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">gnutls_fips140_context_init</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">fips_context</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><</span> <span class="mi" style="color: #099;">0</span> <span class="o" style="font-weight: 600;">||</span></span>
<span id="LC6" class="line" lang="c"> <span class="n" style="margin-top: 0; color: #333;">gnutls_fips140_push_context</span><span class="p">(</span><span class="n" style="color: #333;">fips_context</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><</span> <span class="mi" style="color: #099;">0</span><span class="p">)</span> <span class="p">{</span></span>
<span id="LC7" class="line" lang="c"> <span class="n" style="margin-top: 0; color: #333;">gnutls_fips140_context_deinit</span><span class="p">(</span><span class="n" style="color: #333;">fips_context</span><span class="p">);</span></span>
<span id="LC8" class="line" lang="c"> <span class="n" style="margin-top: 0; color: #333;">fips_context</span> <span class="o" style="font-weight: 600;">=</span> <span class="nb" style="color: #0086b3;">NULL</span><span class="p">;</span></span>
<span id="LC9" class="line" lang="c"> <span class="p" style="margin-top: 0;">}</span></span>
<span id="LC10" class="line" lang="c"><span class="p" style="margin-top: 0;">}</span></span>
<span id="LC11" class="line" lang="c"><span class="p" style="margin-top: 0;">...</span></span>
<span id="LC12" class="line" lang="c"><span class="k" style="margin-top: 0; font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">gnutls_fips140_mode_enabled</span><span class="p">()</span> <span class="o" style="font-weight: 600;">!=</span> <span class="n" style="color: #333;">GNUTLS_FIPS140_DISABLED</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">fips_context</span><span class="p">)</span> <span class="p">{</span></span>
<span id="LC13" class="line" lang="c"> <span class="k" style="margin-top: 0; font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">gnutls_fips140_pop_context</span><span class="p">()</span> <span class="o" style="font-weight: 600;"><</span> <span class="mi" style="color: #099;">0</span><span class="p">)</span> <span class="p">{</span></span>
<span id="LC14" class="line" lang="c"> <span class="cm" style="margin-top: 0; color: #998; font-style: italic;">/* some error handling */</span></span>
<span id="LC15" class="line" lang="c"> <span class="p" style="margin-top: 0;">}</span></span>
<span id="LC16" class="line" lang="c"> <span class="n" style="margin-top: 0; color: #333;">gnutls_fips140_context_deinit</span><span class="p">(</span><span class="n" style="color: #333;">fips_context</span><span class="p">);</span></span>
<span id="LC17" class="line" lang="c"><span class="p" style="margin-top: 0;">}</span></span></code></pre>
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