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<a href="https://gitlab.com/dueno">Daiki Ueno</a>
commented on a
discussion on <a href="https://gitlab.com/gnutls/gnutls/-/merge_requests/1562#note_893837675">lib/fips.c</a>:
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<td class="new_line diff-line-num new" data-linenumber="199" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
199
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC199" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * dest must point to at least HMAC_SIZE amount of memory */</span></span>
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<td class="old_line diff-line-num new" data-linenumber="187" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="new_line diff-line-num new" data-linenumber="200" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
200
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC200" class="line" lang="c"><span class="k" style="font-weight: 600;">static</span> <span class="kt" style="color: #458; font-weight: 600;">int</span> <span class="nf" style="color: #900; font-weight: 600;">get_hmac</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">uint8_t</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">dest</span><span class="p">,</span> <span class="k" style="font-weight: 600;">const</span> <span class="kt" style="color: #458; font-weight: 600;">char</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">value</span><span class="p">)</span></span>
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<td class="old_line diff-line-num" data-linenumber="187" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
187
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<td class="new_line diff-line-num" data-linenumber="201" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
201
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;"><pre style="margin: 0;"> <span id="LC201" class="line" lang="c"><span class="p">{</span></span>
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<td class="old_line diff-line-num old" data-linenumber="188" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
188
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<td class="new_line diff-line-num old" data-linenumber="202" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb"><pre style="margin: 0;">-<span id="LC188" class="line" lang="c"><span class="kt" style="color: #458; font-weight: 600;">char</span><span class="o" style="font-weight: 600;">*</span> <span class="n" style="color: #333;">p</span><span class="p">;</span></span>
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<td class="old_line diff-line-num new" data-linenumber="189" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="new_line diff-line-num new" data-linenumber="202" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
202
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC202" 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="189" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="new_line diff-line-num new" data-linenumber="203" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
203
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC203" class="line" lang="c"> <span class="kt" style="color: #458; font-weight: 600;">size_t</span> <span class="n" style="color: #333;">hmac_size</span><span class="p">;</span></span>
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<td class="old_line diff-line-num new" data-linenumber="189" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="new_line diff-line-num new" data-linenumber="204" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
204
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC204" class="line" lang="c"> <span class="n" style="color: #333;">gnutls_datum_t</span> <span class="n" style="color: #333;">data</span><span class="p">;</span></span>
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<td class="old_line diff-line-num" data-linenumber="189" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
189
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<td class="new_line diff-line-num" data-linenumber="205" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
205
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;"><pre style="margin: 0;"> <span id="LC205" class="line" lang="c"></span>
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<td class="old_line diff-line-num old" data-linenumber="190" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
190
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<td class="new_line diff-line-num old" data-linenumber="206" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb"><pre style="margin: 0;">-<span id="LC190" class="line" lang="c"> <span class="n" style="color: #333;"><span class="idiff left deletion">p</span></span><span class="idiff deletion"> </span><span class="o" style="font-weight: 600;"><span class="idiff deletion">=</span></span><span class="idiff deletion"> </span><span class="n" style="color: #333;"><span class="idiff deletion">strrchr</span></span><span class="p"><span class="idiff deletion">(</span></span><span class="n" style="color: #333;"><span class="idiff deletion">orig</span></span><span class="p"><span class="idiff deletion">,</span></span><span class="idiff deletion"> </span><span class="sc" style="color: #d14;"><span class="idiff right deletion">'/'</span></span><span class="p">);</span></span>
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<td class="old_line diff-line-num old" data-linenumber="191" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
191
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<td class="new_line diff-line-num old" data-linenumber="206" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb"><pre style="margin: 0;">-<span id="LC191" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;"><span class="idiff left deletion">p</span></span><span class="o" style="font-weight: 600;"><span class="idiff deletion">==</span></span><span class="nb" style="color: #0086b3;"><span class="idiff right deletion">NULL</span></span><span class="p">)</span> <span class="p">{</span></span>
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<td class="old_line diff-line-num old" data-linenumber="192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
192
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<td class="new_line diff-line-num old" data-linenumber="206" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb"><pre style="margin: 0;">-<span id="LC192" class="line" lang="c"> <span class="n" style="color: #333;"><span class="idiff left deletion">snprintf</span></span><span class="p"><span class="idiff deletion">(</span></span><span class="n" style="color: #333;"><span class="idiff deletion">mac_file</span></span><span class="p"><span class="idiff deletion">,</span></span><span class="idiff deletion"> </span><span class="n" style="color: #333;"><span class="idiff deletion">mac_file_size</span></span><span class="p"><span class="idiff deletion">,</span></span><span class="idiff deletion"> </span><span class="s" style="color: #d14;"><span class="idiff deletion">".%s"</span></span><span class="n" style="color: #333;"><span class="idiff deletion">HMAC_SUFFIX</span></span><span class="p"><span class="idiff deletion">,</span></span><span class="idiff deletion"> </span><span class="n" style="color: #333;"><span class="idiff right deletion">orig</span></span><span class="p">);</span></span>
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<td class="old_line diff-line-num old" data-linenumber="193" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
193
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<td class="new_line diff-line-num old" data-linenumber="206" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb"><pre style="margin: 0;">-<span id="LC193" class="line" lang="c"> <span class="k" style="font-weight: 600;">return</span><span class="p">;</span></span>
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<td class="old_line diff-line-num new" data-linenumber="194" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="new_line diff-line-num new" data-linenumber="206" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
206
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC206" class="line" lang="c"> <span class="n" style="color: #333;"><span class="idiff left addition">data</span></span><span class="p"><span class="idiff addition">.</span></span><span class="n" style="color: #333;"><span class="idiff addition">size</span></span><span class="idiff addition"> </span><span class="o" style="font-weight: 600;"><span class="idiff addition">=</span></span><span class="idiff addition"> </span><span class="n" style="color: #333;"><span class="idiff addition">strlen</span></span><span class="p"><span class="idiff addition">(</span></span><span class="n" style="color: #333;"><span class="idiff right addition">value</span></span><span class="p">);</span></span>
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<td class="new_line diff-line-num new" data-linenumber="207" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
207
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC207" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;"><span class="idiff left addition">hex_data_size</span></span><span class="p"><span class="idiff addition">(</span></span><span class="n" style="color: #333;"><span class="idiff addition">data</span></span><span class="p"><span class="idiff addition">.</span></span><span class="n" style="color: #333;"><span class="idiff addition">size</span></span><span class="p"><span class="idiff addition">)</span></span><span class="idiff addition"> </span><span class="o" style="font-weight: 600;"><span class="idiff addition">!=</span></span><span class="idiff addition"> </span><span class="n" style="color: #333;"><span class="idiff right addition">HMAC_SIZE</span></span><span class="p">)</span> <span class="p">{</span></span>
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<td class="old_line diff-line-num new" data-linenumber="194" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="new_line diff-line-num new" data-linenumber="208" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
208
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC208" class="line" lang="c"> <span class="n" style="color: #333;"><span class="idiff left addition">_gnutls_debug_log</span></span><span class="p"><span class="idiff addition">(</span></span><span class="s" style="color: #d14;"><span class="idiff addition">"Invalid size of hmac data</span></span><span class="se" style="color: #d14;"><span class="idiff addition">\n</span></span><span class="s" style="color: #d14;"><span class="idiff right addition">"</span></span><span class="p">);</span></span>
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<td class="old_line diff-line-num new" data-linenumber="194" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="new_line diff-line-num new" data-linenumber="209" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
209
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC209" class="line" lang="c"> <span class="k" style="font-weight: 600;">return</span><span class="idiff left addition"> </span><span class="o" style="font-weight: 600;"><span class="idiff addition">-</span></span><span class="mi" style="color: #099;"><span class="idiff right addition">1</span></span><span class="p">;</span></span>
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<p dir="auto">I still see <code>-1</code> is returned in quite a few places. Could you fix them as well?</p>
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