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| zip_file_set_encryption.mdoc -- set encryption method for file |
| Copyright (C) 2016-2017 Dieter Baron and Thomas Klausner |
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| <title>ZIP_FILE_SET_ENCRYPTION(3)</title> |
| </head> |
| <body> |
| <table class="head"> |
| <tr> |
| <td class="head-ltitle">ZIP_FILE_SET_ENCRYPTION(3)</td> |
| <td class="head-vol">Library Functions Manual</td> |
| <td class="head-rtitle">ZIP_FILE_SET_ENCRYPTION(3)</td> |
| </tr> |
| </table> |
| <div class="manual-text"> |
| <section class="Sh"> |
| <h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1> |
| <code class="Nm">zip_file_set_encryption</code> — |
| <div class="Nd">set encryption method for file in zip</div> |
| </section> |
| <section class="Sh"> |
| <h1 class="Sh" id="LIBRARY"><a class="permalink" href="#LIBRARY">LIBRARY</a></h1> |
| libzip (-lzip) |
| </section> |
| <section class="Sh"> |
| <h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1> |
| <code class="In">#include <<a class="In">zip.h</a>></code> |
| <p class="Pp"><var class="Ft">int</var> |
| <br/> |
| <code class="Fn">zip_file_set_encryption</code>(<var class="Fa" style="white-space: nowrap;">zip_t |
| *archive</var>, <var class="Fa" style="white-space: nowrap;">zip_uint64_t |
| index</var>, <var class="Fa" style="white-space: nowrap;">zip_uint16_t |
| method</var>, <var class="Fa" style="white-space: nowrap;">const char |
| *password</var>);</p> |
| </section> |
| <section class="Sh"> |
| <h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1> |
| The <code class="Fn">zip_file_set_encryption</code>() function sets the |
| encryption method for the file at position <var class="Ar">index</var> in the |
| zip archive to <var class="Ar">method</var> using the password |
| <var class="Ar">password</var>. The <var class="Ar">method</var> is the same |
| as returned by <a class="Xr" href="zip_stat.html">zip_stat(3)</a>. For the |
| <var class="Ar">method</var> argument, currently only the following values are |
| supported: |
| <dl class="Bl-tag"> |
| <dt><a class="permalink" href="#ZIP_EM_NONE"><code class="Dv" id="ZIP_EM_NONE">ZIP_EM_NONE</code></a></dt> |
| <dd>No encryption.</dd> |
| <dt><a class="permalink" href="#ZIP_EM_AES_128"><code class="Dv" id="ZIP_EM_AES_128">ZIP_EM_AES_128</code></a></dt> |
| <dd>Winzip AES-128 encryption.</dd> |
| <dt><a class="permalink" href="#ZIP_EM_AES_192"><code class="Dv" id="ZIP_EM_AES_192">ZIP_EM_AES_192</code></a></dt> |
| <dd>Winzip AES-192 encryption.</dd> |
| <dt><a class="permalink" href="#ZIP_EM_AES_256"><code class="Dv" id="ZIP_EM_AES_256">ZIP_EM_AES_256</code></a></dt> |
| <dd>Winzip AES-256 encryption.</dd> |
| <dt><a class="permalink" href="#ZIP_EM_TRAD_PKWARE"><code class="Dv" id="ZIP_EM_TRAD_PKWARE">ZIP_EM_TRAD_PKWARE</code></a></dt> |
| <dd>Traditional PKWare encryption. Do not use this method, it is not secure. |
| It is only provided for backwards compatibility.</dd> |
| </dl> |
| <p class="Pp">If <var class="Ar">password</var> is <code class="Dv">NULL</code>, |
| the default password provided by |
| <a class="Xr" href="zip_set_default_password.html">zip_set_default_password(3)</a> |
| is used.</p> |
| <p class="Pp">The current encryption method for a file in a zip archive can be |
| determined using <a class="Xr" href="zip_stat.html">zip_stat(3)</a>.</p> |
| </section> |
| <section class="Sh"> |
| <h1 class="Sh" id="RETURN_VALUES"><a class="permalink" href="#RETURN_VALUES">RETURN |
| VALUES</a></h1> |
| Upon successful completion 0 is returned. Otherwise, -1 is returned and the |
| error information in <var class="Ar">archive</var> is set to indicate the |
| error. |
| </section> |
| <section class="Sh"> |
| <h1 class="Sh" id="ERRORS"><a class="permalink" href="#ERRORS">ERRORS</a></h1> |
| <code class="Fn">zip_file_set_encryption</code>() fails if: |
| <dl class="Bl-tag"> |
| <dt>[<a class="permalink" href="#ZIP_ER_ENCRNOTSUPP"><code class="Er" id="ZIP_ER_ENCRNOTSUPP">ZIP_ER_ENCRNOTSUPP</code></a>]</dt> |
| <dd>Unsupported compression method requested.</dd> |
| <dt>[<a class="permalink" href="#ZIP_ER_INVAL"><code class="Er" id="ZIP_ER_INVAL">ZIP_ER_INVAL</code></a>]</dt> |
| <dd><var class="Ar">index</var> is not a valid file index in |
| <var class="Ar">archive</var>, or the argument combination is |
| invalid.</dd> |
| <dt>[<a class="permalink" href="#ZIP_ER_MEMORY"><code class="Er" id="ZIP_ER_MEMORY">ZIP_ER_MEMORY</code></a>]</dt> |
| <dd>Required memory could not be allocated.</dd> |
| <dt>[<a class="permalink" href="#ZIP_ER_RDONLY"><code class="Er" id="ZIP_ER_RDONLY">ZIP_ER_RDONLY</code></a>]</dt> |
| <dd>Read-only zip file, no changes allowed.</dd> |
| </dl> |
| </section> |
| <section class="Sh"> |
| <h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE |
| ALSO</a></h1> |
| <a class="Xr" href="libzip.html">libzip(3)</a>, |
| <a class="Xr" href="zip_encryption_method_supported.html">zip_encryption_method_supported(3)</a>, |
| <a class="Xr" href="zip_fopen_encrypted.html">zip_fopen_encrypted(3)</a>, |
| <a class="Xr" href="zip_fopen_index_encrypted.html">zip_fopen_index_encrypted(3)</a>, |
| <a class="Xr" href="zip_set_default_password.html">zip_set_default_password(3)</a>, |
| <a class="Xr" href="zip_stat.html">zip_stat(3)</a> |
| </section> |
| <section class="Sh"> |
| <h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1> |
| <code class="Fn">zip_file_set_encryption</code>() was added in libzip 1.2.0. |
| </section> |
| <section class="Sh"> |
| <h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1> |
| <span class="An">Dieter Baron</span> |
| <<a class="Mt" href="mailto:dillo@nih.at">dillo@nih.at</a>> and |
| <span class="An">Thomas Klausner</span> |
| <<a class="Mt" href="mailto:tk@giga.or.at">tk@giga.or.at</a>> |
| </section> |
| </div> |
| <table class="foot"> |
| <tr> |
| <td class="foot-date">April 2, 2020</td> |
| <td class="foot-os">NiH</td> |
| </tr> |
| </table> |
| </body> |
| </html> |
