ce9b996409
Reviewed-by: Richard Levitte <levitte@openssl.org> Reviewed-by: Matt Caswell <matt@openssl.org> Reviewed-by: Nicola Tuveri <nic.tuv@gmail.com> (Merged from https://github.com/openssl/openssl/pull/8527)
78 lines
2.5 KiB
Text
78 lines
2.5 KiB
Text
=pod
|
|
|
|
=head1 NAME
|
|
|
|
OSSL_CRMF_pbm_new,
|
|
OSSL_CRMF_pbmp_new
|
|
- functions for producing Password-Based MAC (PBM)
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
#include <openssl/crmf.h>
|
|
|
|
int OSSL_CRMF_pbm_new(const OSSL_CRMF_PBMPARAMETER *pbmp,
|
|
const unsigned char *msg, size_t msglen,
|
|
const unsigned char *sec, size_t seclen,
|
|
unsigned char **mac, size_t *maclen);
|
|
|
|
OSSL_CRMF_PBMPARAMETER *OSSL_CRMF_pbmp_new(size_t saltlen, int owfnid,
|
|
int itercnt, int macnid);
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
OSSL_CRMF_pbm_new() generates a PBM (Password-Based MAC) based on given PBM
|
|
parameters B<pbmp>, message B<msg>, and secret B<sec>, along with the respective
|
|
lengths B<msglen> and B<seclen>. On success writes the adddress of the newly
|
|
allocated MAC via the B<mac> reference parameter and writes the length via the
|
|
B<maclen> reference parameter unless it its NULL.
|
|
|
|
The iteration count must be at least 100, as stipulated by RFC 4211, and is
|
|
limited to at most 100000 to avoid DoS through manipulated or otherwise
|
|
malformed input.
|
|
|
|
OSSL_CRMF_pbmp_new() initializes and returns a new PBMParameter
|
|
structure with a new random salt of given length B<saltlen>, OWF (one-way
|
|
function) NID B<owfnid>, iteration count B<itercnt>, and MAC NID B<macnid>.
|
|
|
|
=head1 NOTES
|
|
|
|
The algorithms for the OWF (one-way function) and for the MAC (message
|
|
authentication code) may be any with a NID defined in B<openssl/objects.h>.
|
|
As specified by RFC 4210, these should include NID_hmac_sha1.
|
|
|
|
RFC 4210 recommends that the salt SHOULD be at least 8 bytes (64 bits) long.
|
|
|
|
=head1 RETURN VALUES
|
|
|
|
OSSL_CRMF_pbm_new() returns 1 on success, 0 on error.
|
|
|
|
OSSL_CRMF_pbmp_new() returns a new and initialized OSSL_CRMF_PBMPARAMETER
|
|
structure, or NULL on error.
|
|
|
|
=head1 EXAMPLE
|
|
|
|
OSSL_CRMF_PBMPARAMETER *pbm = NULL;
|
|
unsigned char *msg = "Hello";
|
|
unsigned char *sec = "SeCrEt";
|
|
unsigned char *mac = NULL;
|
|
size_t maclen;
|
|
|
|
if ((pbm = OSSL_CRMF_pbmp_new(16, NID_sha256, 500, NID_hmac_sha1) == NULL))
|
|
goto err;
|
|
if (!OSSL_CRMF_pbm_new(pbm, msg, 5, sec, 6, &mac, &maclen))
|
|
goto err;
|
|
|
|
=head1 SEE ALSO
|
|
|
|
RFC 4211 section 4.4
|
|
|
|
=head1 COPYRIGHT
|
|
|
|
Copyright 2007-2018 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
|
|
L<https://www.openssl.org/source/license.html>.
|
|
|
|
=cut
|