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.
22 PKCS12_newpass() returns 1 on success or 0 on failure. Applications can
23 retrieve the most recent error from PKCS12_newpass() with ERR_get_error().
27 This example loads a PKCS#12 file, changes its password and writes out
28 the result to a new file.
32 #include <openssl/pem.h>
33 #include <openssl/err.h>
34 #include <openssl/pkcs12.h>
36 int main(int argc, char **argv)
41 fprintf(stderr, "Usage: pkread p12file password newpass opfile\n");
44 if ((fp = fopen(argv[1], "rb")) == NULL) {
45 fprintf(stderr, "Error opening file %s\n", argv[1]);
48 p12 = d2i_PKCS12_fp(fp, NULL);
51 fprintf(stderr, "Error reading PKCS#12 file\n");
52 ERR_print_errors_fp(stderr);
55 if (PKCS12_newpass(p12, argv[2], argv[3]) == 0) {
56 fprintf(stderr, "Error changing password\n");
57 ERR_print_errors_fp(stderr);
61 if ((fp = fopen(argv[4], "wb")) == NULL) {
62 fprintf(stderr, "Error opening file %s\n", argv[4]);
66 i2d_PKCS12_fp(fp, p12);
75 If the PKCS#12 structure does not have a password, then you must use the empty
76 string "" for B<oldpass>. Using NULL for B<oldpass> will result in a
77 PKCS12_newpass() failure.
79 If the wrong password is used for B<oldpass> then the function will fail,
80 with a MAC verification error. In rare cases the PKCS12 structure does not
81 contain a MAC: in this case it will usually fail with a decryption padding
86 The password format is a NULL terminated ASCII string which is converted to
87 Unicode form internally. As a result some passwords cannot be supplied to
92 L<PKCS12_create(3)>, L<ERR_get_error(3)>
96 Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
98 Licensed under the OpenSSL license (the "License"). You may not use
99 this file except in compliance with the License. You can obtain a copy
100 in the file LICENSE in the source distribution or at
101 L<https://www.openssl.org/source/license.html>.