5 PKCS12_newpass - change the password of a PKCS12 structure
9 #include <openssl/pkcs12.h>
11 int PKCS12_newpass(PKCS12 *p12, const char *oldpass, const char *newpass);
15 PKCS12_newpass() changes the password of a PKCS12 structure.
17 B<p12> is a pointer to a PKCS12 structure. B<oldpass> is the existing password
18 and B<newpass> is the new password.
20 Each of B<oldpass> and B<newpass> is independently interpreted as a string in
21 the UTF-8 encoding. If it is not valid UTF-8, it is assumed to be ISO8859-1
24 In particular, this means that passwords in the locale character set
25 (or code page on Windows) must potentially be converted to UTF-8 before
26 use. This may include passwords from local text files, or input from
27 the terminal or command line. Refer to the documentation of
28 L<UI_OpenSSL(3)>, for example.
30 If the PKCS#12 structure does not have a password, then you must use the empty
31 string "" for B<oldpass>. Using NULL for B<oldpass> will result in a
32 PKCS12_newpass() failure.
34 If the wrong password is used for B<oldpass> then the function will fail,
35 with a MAC verification error. In rare cases the PKCS12 structure does not
36 contain a MAC: in this case it will usually fail with a decryption padding
41 PKCS12_newpass() returns 1 on success or 0 on failure. Applications can
42 retrieve the most recent error from PKCS12_newpass() with ERR_get_error().
46 This example loads a PKCS#12 file, changes its password and writes out
47 the result to a new file.
51 #include <openssl/pem.h>
52 #include <openssl/err.h>
53 #include <openssl/pkcs12.h>
55 int main(int argc, char **argv)
61 fprintf(stderr, "Usage: pkread p12file password newpass opfile\n");
64 if ((fp = fopen(argv[1], "rb")) == NULL) {
65 fprintf(stderr, "Error opening file %s\n", argv[1]);
68 p12 = d2i_PKCS12_fp(fp, NULL);
71 fprintf(stderr, "Error reading PKCS#12 file\n");
72 ERR_print_errors_fp(stderr);
75 if (PKCS12_newpass(p12, argv[2], argv[3]) == 0) {
76 fprintf(stderr, "Error changing password\n");
77 ERR_print_errors_fp(stderr);
81 if ((fp = fopen(argv[4], "wb")) == NULL) {
82 fprintf(stderr, "Error opening file %s\n", argv[4]);
86 i2d_PKCS12_fp(fp, p12);
95 The password format is a NULL terminated ASCII string which is converted to
96 Unicode form internally. As a result some passwords cannot be supplied to
101 L<PKCS12_create(3)>, L<ERR_get_error(3)>,
102 L<passphrase-encoding(7)>
106 Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
108 Licensed under the Apache License 2.0 (the "License"). You may not use
109 this file except in compliance with the License. You can obtain a copy
110 in the file LICENSE in the source distribution or at
111 L<https://www.openssl.org/source/license.html>.