1.\" $OpenBSD: PKCS12_newpass.3,v 1.4 2019/06/14 13:59:32 schwarze Exp $ 2.\" OpenSSL c95a8b4e May 5 14:26:26 2016 +0100 3.\" 4.\" This file was written by Jeffrey Walton <noloader@gmail.com>. 5.\" Copyright (c) 2016 The OpenSSL Project. All rights reserved. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 11.\" 1. Redistributions of source code must retain the above copyright 12.\" notice, this list of conditions and the following disclaimer. 13.\" 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in 16.\" the documentation and/or other materials provided with the 17.\" distribution. 18.\" 19.\" 3. All advertising materials mentioning features or use of this 20.\" software must display the following acknowledgment: 21.\" "This product includes software developed by the OpenSSL Project 22.\" for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 23.\" 24.\" 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 25.\" endorse or promote products derived from this software without 26.\" prior written permission. For written permission, please contact 27.\" openssl-core@openssl.org. 28.\" 29.\" 5. Products derived from this software may not be called "OpenSSL" 30.\" nor may "OpenSSL" appear in their names without prior written 31.\" permission of the OpenSSL Project. 32.\" 33.\" 6. Redistributions of any form whatsoever must retain the following 34.\" acknowledgment: 35.\" "This product includes software developed by the OpenSSL Project 36.\" for use in the OpenSSL Toolkit (http://www.openssl.org/)" 37.\" 38.\" THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 39.\" EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 40.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 41.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 42.\" ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 43.\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 44.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 45.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 46.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 47.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 48.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 49.\" OF THE POSSIBILITY OF SUCH DAMAGE. 50.\" 51.Dd $Mdocdate: June 14 2019 $ 52.Dt PKCS12_NEWPASS 3 53.Os 54.Sh NAME 55.Nm PKCS12_newpass 56.Nd change the password of a PKCS#12 structure 57.Sh SYNOPSIS 58.In openssl/pkcs12.h 59.Ft int 60.Fo PKCS12_newpass 61.Fa "PKCS12 *p12" 62.Fa "const char *oldpass" 63.Fa "const char *newpass" 64.Fc 65.Sh DESCRIPTION 66.Fn PKCS12_newpass 67changes the password of a PKCS#12 structure. 68.Pp 69.Fa p12 70is a pointer to a PKCS#12 structure. 71.Fa oldpass 72is the existing password and 73.Fa newpass 74is the new password. 75.Pp 76If the PKCS#12 structure does not have a password, use the empty 77string 78.Qq \& 79for 80.Fa oldpass . 81Passing 82.Dv NULL 83for 84.Fa oldpass 85results in a 86.Fn PKCS12_newpass 87failure. 88.Pp 89If the wrong password is used for 90.Fa oldpass , 91the function will fail with a MAC verification error. 92In rare cases, the PKCS#12 structure does not contain a MAC: 93in this case it will usually fail with a decryption padding error. 94.Sh RETURN VALUES 95Upon successful completion, 1 is returned; 96otherwise 0 is returned and an error code can be retrieved with 97.Xr ERR_get_error 3 . 98.Sh EXAMPLES 99This example loads a PKCS#12 file, changes its password, 100and writes out the result to a new file. 101.Bd -literal 102#include <stdio.h> 103#include <stdlib.h> 104#include <openssl/pem.h> 105#include <openssl/err.h> 106#include <openssl/pkcs12.h> 107 108int main(int argc, char **argv) 109{ 110 FILE *fp; 111 PKCS12 *p12; 112 if (argc != 5) { 113 fprintf(stderr, 114 "Usage: pkread p12file password newpass opfile\en"); 115 return 1; 116 } 117 if ((fp = fopen(argv[1], "rb")) == NULL) { 118 fprintf(stderr, "Error opening file %s\en", argv[1]); 119 return 1; 120 } 121 p12 = d2i_PKCS12_fp(fp, NULL); 122 fclose(fp); 123 if (p12 == NULL) { 124 fprintf(stderr, "Error reading PKCS#12 file\en"); 125 ERR_print_errors_fp(stderr); 126 return 1; 127 } 128 if (PKCS12_newpass(p12, argv[2], argv[3]) == 0) { 129 fprintf(stderr, "Error changing password\en"); 130 ERR_print_errors_fp(stderr); 131 PKCS12_free(p12); 132 return 1; 133 } 134 if ((fp = fopen(argv[4], "wb")) == NULL) { 135 fprintf(stderr, "Error opening file %s\en", argv[4]); 136 PKCS12_free(p12); 137 return 1; 138 } 139 i2d_PKCS12_fp(fp, p12); 140 PKCS12_free(p12); 141 fclose(fp); 142 return 0; 143} 144.Ed 145.Sh SEE ALSO 146.Xr PKCS12_create 3 , 147.Xr PKCS12_new 3 148.Sh HISTORY 149.Fn PKCS12_newpass 150first appeared in OpenSSL 0.9.5 and has been available since 151.Ox 2.7 . 152.Sh BUGS 153The password format is a NUL terminated ASCII string which is 154converted to Unicode form internally. 155As a result, some passwords cannot be supplied to this function. 156