1=pod 2 3=head1 NAME 4 5PKCS12_gen_mac, PKCS12_setup_mac, PKCS12_set_mac, 6PKCS12_set_pbmac1_pbkdf2, PKCS12_verify_mac, PKCS12_get0_mac - 7Functions to create and manipulate a PKCS#12 MAC structure 8 9=head1 SYNOPSIS 10 11 #include <openssl/pkcs12.h> 12 13 int PKCS12_gen_mac(PKCS12 *p12, const char *pass, int passlen, 14 unsigned char *mac, unsigned int *maclen); 15 int PKCS12_verify_mac(PKCS12 *p12, const char *pass, int passlen); 16 int PKCS12_set_mac(PKCS12 *p12, const char *pass, int passlen, 17 unsigned char *salt, int saltlen, int iter, 18 const EVP_MD *md_type); 19 int PKCS12_set_pbmac1_pbkdf2(PKCS12 *p12, const char *pass, int passlen, 20 unsigned char *salt, int saltlen, int iter, 21 const EVP_MD *md_type, 22 const char *prf_md_name); 23 int PKCS12_setup_mac(PKCS12 *p12, int iter, unsigned char *salt, 24 int saltlen, const EVP_MD *md_type); 25 26 void PKCS12_get0_mac(const ASN1_OCTET_STRING **pmac, 27 const X509_ALGOR **pmacalg, 28 const ASN1_OCTET_STRING **psalt, 29 const ASN1_INTEGER **piter, 30 const PKCS12 *p12); 31 32=head1 DESCRIPTION 33 34PKCS12_gen_mac() generates an HMAC over the entire PKCS#12 object using the 35supplied password along with a set of already configured parameters. 36The default key generation mechanism used is PKCS12KDF. 37 38PKCS12_verify_mac() verifies the PKCS#12 object's HMAC using the supplied 39password. 40 41PKCS12_setup_mac() sets the MAC part of the PKCS#12 structure with the supplied 42parameters. 43 44PKCS12_set_mac() sets the MAC and MAC parameters into the PKCS#12 object. 45PKCS12_set_pbmac1_pbkdf2() sets the MAC and MAC parameters into the PKCS#12 46object when B<PBMAC1> with PBKDF2 is used for protection of the PKCS#12 object. 47 48I<pass> is the passphrase to use in the HMAC. I<salt> is the salt value to use, 49I<iter> is the iteration count and I<md_type> is the message digest function to 50use. I<prf_md_name> specifies the digest used for the PBKDF2 in PBMAC1 KDF. 51 52PKCS12_get0_mac() retrieves any included MAC value, B<X509_ALGOR> object, 53I<salt>, and I<iter> count from the PKCS12 object. 54 55=head1 NOTES 56 57If I<salt> is NULL then a suitable salt will be generated and used. 58 59If I<iter> is 1 then an iteration count will be omitted from the PKCS#12 60structure. 61 62PKCS12_gen_mac(), PKCS12_verify_mac(), PKCS12_set_mac() and 63PKCS12_set_pbmac1_pbkdf2() make assumptions regarding the encoding of the 64given passphrase. See L<passphrase-encoding(7)> for more information. 65 66=head1 RETURN VALUES 67 68All functions returning an integer return 1 on success and 0 if an error occurred. 69 70=head1 CONFORMING TO 71 72IETF RFC 7292 (L<https://tools.ietf.org/html/rfc7292>) 73IETF RFC 9579 (L<https://tools.ietf.org/html/rfc9579>) 74 75=head1 SEE ALSO 76 77L<d2i_PKCS12(3)>, 78L<EVP_KDF-PKCS12KDF(7)>, 79L<PKCS12_create(3)>, 80L<passphrase-encoding(7)> 81 82=head1 HISTORY 83 84The I<PKCS12_set_pbmac1_pbkdf2> function was added in OpenSSL 3.4. 85 86=head1 COPYRIGHT 87 88Copyright 2021-2024 The OpenSSL Project Authors. All Rights Reserved. 89 90Licensed under the Apache License 2.0 (the "License"). You may not use 91this file except in compliance with the License. You can obtain a copy 92in the file LICENSE in the source distribution or at 93L<https://www.openssl.org/source/license.html>. 94 95=cut 96
