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<title>PKCS12_newpass</title>
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<!-- INDEX BEGIN -->
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<p><a name="__index__"></a></p>
<ul>
<li><a href="#name">NAME</a></li>
<li><a href="#synopsis">SYNOPSIS</a></li>
<li><a href="#description">DESCRIPTION</a></li>
<li><a href="#notes">NOTES</a></li>
<li><a href="#return_values">RETURN VALUES</a></li>
<li><a href="#examples">EXAMPLES</a></li>
<li><a href="#notes">NOTES</a></li>
<li><a href="#bugs">BUGS</a></li>
<li><a href="#see_also">SEE ALSO</a></li>
<li><a href="#copyright">COPYRIGHT</a></li>
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<p>
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<hr />
<h1><a name="name">NAME</a></h1>
<p>PKCS12_newpass - change the password of a PKCS12 structure</p>
<p>
</p>
<hr />
<h1><a name="synopsis">SYNOPSIS</a></h1>
<pre>
#include <openssl/pkcs12.h></pre>
<pre>
int PKCS12_newpass(PKCS12 *p12, const char *oldpass, const char *newpass);</pre>
<p>
</p>
<hr />
<h1><a name="description">DESCRIPTION</a></h1>
<p>PKCS12_newpass() changes the password of a PKCS12 structure.</p>
<p><strong>p12</strong> is a pointer to a PKCS12 structure. <strong>oldpass</strong> is the existing password
and <strong>newpass</strong> is the new password.</p>
<p>
</p>
<hr />
<h1><a name="notes">NOTES</a></h1>
<p>Each of <strong>oldpass</strong> and <strong>newpass</strong> is independently interpreted as a string in
the UTF-8 encoding. If it is not valid UTF-8, it is assumed to be ISO8859-1
instead.</p>
<p>In particular, this means that passwords in the locale character set
(or code page on Windows) must potentially be converted to UTF-8 before
use. This may include passwords from local text files, or input from
the terminal or command line. Refer to the documentation of
<em>UI_OpenSSL(3)</em>, for example.</p>
<p>
</p>
<hr />
<h1><a name="return_values">RETURN VALUES</a></h1>
<p>PKCS12_newpass() returns 1 on success or 0 on failure. Applications can
retrieve the most recent error from PKCS12_newpass() with <code>ERR_get_error()</code>.</p>
<p>
</p>
<hr />
<h1><a name="examples">EXAMPLES</a></h1>
<p>This example loads a PKCS#12 file, changes its password and writes out
the result to a new file.</p>
<pre>
#include <stdio.h>
#include <stdlib.h>
#include <openssl/pem.h>
#include <openssl/err.h>
#include <openssl/pkcs12.h></pre>
<pre>
int main(int argc, char **argv)
{
FILE *fp;
PKCS12 *p12;</pre>
<pre>
if (argc != 5) {
fprintf(stderr, "Usage: pkread p12file password newpass opfile\n");
return 1;
}
if ((fp = fopen(argv[1], "rb")) == NULL) {
fprintf(stderr, "Error opening file %s\n", argv[1]);
return 1;
}
p12 = d2i_PKCS12_fp(fp, NULL);
fclose(fp);
if (p12 == NULL) {
fprintf(stderr, "Error reading PKCS#12 file\n");
ERR_print_errors_fp(stderr);
return 1;
}
if (PKCS12_newpass(p12, argv[2], argv[3]) == 0) {
fprintf(stderr, "Error changing password\n");
ERR_print_errors_fp(stderr);
PKCS12_free(p12);
return 1;
}
if ((fp = fopen(argv[4], "wb")) == NULL) {
fprintf(stderr, "Error opening file %s\n", argv[4]);
PKCS12_free(p12);
return 1;
}
i2d_PKCS12_fp(fp, p12);
PKCS12_free(p12);
fclose(fp);
return 0;
}</pre>
<p>
</p>
<hr />
<h1><a name="notes">NOTES</a></h1>
<p>If the PKCS#12 structure does not have a password, then you must use the empty
string "" for <strong>oldpass</strong>. Using NULL for <strong>oldpass</strong> will result in a
PKCS12_newpass() failure.</p>
<p>If the wrong password is used for <strong>oldpass</strong> then the function will fail,
with a MAC verification error. In rare cases the PKCS12 structure does not
contain a MAC: in this case it will usually fail with a decryption padding
error.</p>
<p>
</p>
<hr />
<h1><a name="bugs">BUGS</a></h1>
<p>The password format is a NULL terminated ASCII string which is converted to
Unicode form internally. As a result some passwords cannot be supplied to
this function.</p>
<p>
</p>
<hr />
<h1><a name="see_also">SEE ALSO</a></h1>
<p><em>PKCS12_create(3)</em>, <em>ERR_get_error(3)</em>,
<em>passphrase-encoding(7)</em></p>
<p>
</p>
<hr />
<h1><a name="copyright">COPYRIGHT</a></h1>
<p>Copyright 2016-2019 The OpenSSL Project Authors. All Rights Reserved.</p>
<p>Licensed under the OpenSSL license (the "License"). You may not use
this file except in compliance with the License. You can obtain a copy
in the file LICENSE in the source distribution or at
<a href="https://www.openssl.org/source/license.html">https://www.openssl.org/source/license.html</a>.</p>
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