NAME

       PKCS12_gen_mac, PKCS12_setup_mac, PKCS12_set_mac, PKCS12_verify_mac - Functions to create
       and manipulate a PKCS#12 structure

SYNOPSIS

        #include <openssl/pkcs12.h>

        int PKCS12_gen_mac(PKCS12 *p12, const char *pass, int passlen,
                           unsigned char *mac, unsigned int *maclen);
        int PKCS12_verify_mac(PKCS12 *p12, const char *pass, int passlen);
        int PKCS12_set_mac(PKCS12 *p12, const char *pass, int passlen,
                           unsigned char *salt, int saltlen, int iter,
                           const EVP_MD *md_type);
        int PKCS12_setup_mac(PKCS12 *p12, int iter, unsigned char *salt,
                             int saltlen, const EVP_MD *md_type);

DESCRIPTION

       PKCS12_gen_mac() generates an HMAC over the entire PKCS#12 object using the supplied
       password along with a set of already configured paramters.

       PKCS12_verify_mac() verifies the PKCS#12 object's HMAC using the supplied password.

       PKCS12_setup_mac() sets the MAC part of the PKCS#12 structure with the supplied
       parameters.

       PKCS12_set_mac() sets the MAC and MAC parameters into the PKCS#12 object.

       pass is the passphrase to use in the HMAC. salt is the salt value to use, iter is the
       iteration count and md_type is the message digest function to use.

NOTES

       If salt is NULL then a suitable salt will be generated and used.

       If iter is 1 then an iteration count will be omitted from the PKCS#12 structure.

       PKCS12_gen_mac(), PKCS12_verify_mac() and PKCS12_set_mac() make assumptions regarding the
       encoding of the given passphrase. See passphrase-encoding(7) for more information.

RETURN VALUES

       All functions return 1 on success and 0 if an error occurred.

CONFORMING TO

       IETF RFC 7292 (<https://tools.ietf.org/html/rfc7292>)

SEE ALSO

       d2i_PKCS12(3), PKCS12_create(3), passphrase-encoding(7)

COPYRIGHT

       Copyright 2021 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>.