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/* IKEv1 PRF specific operations, for libreswan
*
* Copyright (C) 2019 Andrew Cagney <cagney@gnu.org>
* Copyright (C) 2020 Yulia Kuzovkova <ukuzovkova@gmail.com>
* Copyright (C) 2020 Nupur Agrawal <nupur202000@gmail.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <https://www.gnu.org/licenses/gpl2.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#ifndef IKE_ALG_PRF_IKEv2_OPS_H
#define IKE_ALG_PRF_IKEv2_OPS_H
#include "chunk.h"
#include "shunk.h"
#include "crypt_mac.h"
struct logger;
struct prf_ikev2_ops {
const char *backend;
/*
* IKEv2 - RFC4306 2.14 SKEYSEED - calculation.
*/
PK11SymKey *(*prfplus)(const struct prf_desc *prf_desc,
PK11SymKey *key, PK11SymKey *seed,
size_t required_keymat,
struct logger *logger);
/* SKEYSEED = prf(Ni | Nr, g^ir) */
PK11SymKey *(*ike_sa_skeyseed)(const struct prf_desc *prf_desc,
const chunk_t Ni, const chunk_t Nr,
PK11SymKey *dh_secret,
struct logger *logger);
/* SKEYSEED = prf(SK_d (old), g^ir (new) | Ni | Nr) */
PK11SymKey *(*ike_sa_rekey_skeyseed)(const struct prf_desc *prf_desc,
PK11SymKey *old_SK_d,
PK11SymKey *new_dh_secret,
const chunk_t Ni, const chunk_t Nr,
struct logger *logger);
/*
* IKEv2 - RFC5723 5.1 SKEYSEED - calculation
* SKEYSEED = prf(SK_d (old), "Resumption" | Ni | Nr)
*/
PK11SymKey *(*ike_sa_resume_skeyseed)(const struct prf_desc *prf_desc,
PK11SymKey *old_SK_d,
const chunk_t Ni, const chunk_t Nr,
struct logger *logger);
/* KEYMAT = prf+ (SKEYSEED, Ni | Nr | SPIi | SPIr) */
PK11SymKey *(*ike_sa_keymat)(const struct prf_desc *prf_desc,
PK11SymKey *skeyseed,
const chunk_t Ni, const chunk_t Nr,
const shunk_t SPIi, const shunk_t SPIr,
size_t required_bytes,
struct logger *logger);
/* KEYMAT = prf+(SK_d, [ g^ir (new) | ] Ni | Nr) */
PK11SymKey *(*child_sa_keymat)(const struct prf_desc *prf_desc,
PK11SymKey *SK_d,
PK11SymKey *new_dh_secret,
const chunk_t Ni, const chunk_t Nr,
size_t required_bytes,
struct logger *logger);
/* AUTH = prf( prf(Shared Secret, "Key Pad for IKEv2"), <{Initiator,Responder}SignedOctets>) */
struct crypt_mac (*psk_auth)(const struct prf_desc *prf_desc,
shunk_t pss,
chunk_t first_packet, chunk_t nonce,
const struct crypt_mac *id_hash,
chunk_t intermediate_packet,
struct logger *logger);
/* AUTH = prf(SK_px, <message octets>) */
struct crypt_mac (*psk_resume)(const struct prf_desc *prf_desc,
PK11SymKey *SK_px,
chunk_t first_packet,
struct logger *logger);
};
extern const struct prf_ikev2_ops ike_alg_prf_ikev2_mac_ops;
#ifdef USE_NSS_KDF
extern const struct prf_ikev2_ops ike_alg_prf_ikev2_nss_ops;
#endif
#endif
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