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<a href="https://gitlab.com/Vrancken">Tom</a>
commented on a discussion
on <a href="https://gitlab.com/gnutls/gnutls/merge_requests/650#note_121035181">lib/cert-cred-rawpk.c</a>:
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<td class="diff-line-num new new_line" data-linenumber="338" 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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<pre style="margin: 0;">+<span id="LC338" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>
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<pre style="margin: 0;">+<span id="LC339" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * Obtains pointers to a public/private key pair that has been stored in</span></span>
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<pre style="margin: 0;">+<span id="LC340" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * @cred with one of gnutls_certificate_set_key(),</span></span>
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<td class="diff-line-num new new_line" data-linenumber="341" 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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<pre style="margin: 0;">+<span id="LC341" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * gnutls_certificate_set_rawpk_key_mem() or gnutls_certificate_set_rawpk_key_file().</span></span>
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<pre style="margin: 0;">+<span id="LC342" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * The returned keys must NOT be deallocated since they point directly</span></span>
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<pre style="margin: 0;">+<span id="LC343" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * to the keys in the credentials struct. With this function you can</span></span>
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<pre style="margin: 0;">+<span id="LC344" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * retrieve, and if desired, overwrite a previously set key pair.</span></span>
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<pre style="margin: 0;">+<span id="LC345" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>
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<pre style="margin: 0;">+<span id="LC346" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * A correct @index can be retrieved as the return value from a</span></span>
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<pre style="margin: 0;">+<span id="LC347" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * gnutls_certificate_set_key(), gnutls_certificate_set_rawpk_key_mem()</span></span>
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<pre style="margin: 0;">+<span id="LC348" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * or gnutls_certificate_set_rawpk_key_file() function when the</span></span>
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<pre style="margin: 0;">+<span id="LC349" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * %GNUTLS_CERTIFICATE_API_V2 flag is set.</span></span>
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<pre style="margin: 0;">+<span id="LC350" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>
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<pre style="margin: 0;">+<span id="LC351" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * If there is no key with the given index,</span></span>
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<pre style="margin: 0;">+<span id="LC352" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * %GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE is returned. If the public key</span></span>
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<pre style="margin: 0;">+<span id="LC353" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * with the given index is not a raw public key, %GNUTLS_E_INVALID_REQUEST</span></span>
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<p dir="auto">The <code>gnutls_certificate_get_crt_raw()</code> function just returns the raw certificate data (in DER encoding). It doesn't look at the certificate type. The user that calls this function must know how to interpret the data (i.e. whether it's a x509 cert or raw pubkey). Therefore I think it doesn't make sense to check for a cert type here (we even don't have a parameter for that) and thus we can not return a <code>%GNUTLS_E_INVALID_REQUEST</code>.</p>
<p dir="auto">The <code>gnutls_certificate_get_x509_key()</code> and <code>gnutls_certificate_get_x509_crt()</code> functions however actually do a cert type check and are in line with <code>gnutls_certificate_get_rawpk_keypair</code>. Do you agree that we should leave <code>gnutls_certificate_get_crt_raw()</code> the way it is now?</p>
<blockquote dir="auto" style="color: #7f8fa4; border-left-width: 3px; border-left-color: #eaeaea; border-left-style: solid; margin: 0; padding: 0 0 0 15px;">
<p>This should be removed. We don't provide modify access to internal data, period.</p>
</blockquote>
<p dir="auto">I will change this</p>
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