NAME
PKCS12_newpass - change the password of a PKCS12 structure
SYNOPSIS
#include <openssl/pkcs12.h>
int PKCS12_newpass(PKCS12 *p12, const char *oldpass, const char *newpass);
DESCRIPTION
PKCS12_newpass() changes the password of a PKCS12 structure.
p12 is a pointer to a PKCS12 structure. oldpass is the existing password and newpass is the new password.
Each of oldpass and newpass 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.
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 RETURN VALUES
PKCS12_newpass() returns 1 on success or 0 on failure. Applications can retrieve the most recent error from PKCS12_newpass() with ERR_get_error(). This example loads a PKCS#12 file, changes its password and writes out the result to a new file. 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. ERR_get_error(3), COPYRIGHT
Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved. Licensed under the Apache License 2.0 (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 https://www.openssl.org/source/license.html.EXAMPLES
#include <stdio.h>
#include <stdlib.h>
#include <openssl/pem.h>
#include <openssl/err.h>
#include <openssl/pkcs12.h>
int main(int argc, char **argv)
{
FILE *fp;
PKCS12 *p12;
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;
}
BUGS
SEE ALSO