issue 384

This commit is contained in:
laurent
2018-12-23 17:55:07 +01:00
parent 001163f63b
commit b3f1440249
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
#include <string.h>
#include "secu_defs.h"
/*!
* Derive the kNASenc from kasme and perform truncate on the generated key to
* reduce his size to 128 bits. Definition of the derivation function can
* be found in 3GPP TS.33401 #A.7
* @param[in] nas_alg_type NAS algorithm distinguisher
* @param[in] nas_enc_alg_id NAS encryption/integrity algorithm identifier.
* Possible values are:
* - 0 for EIA0 algorithm (Null Integrity Protection algorithm)
* - 1 for 128-EIA1 SNOW 3G
* - 2 for 128-EIA2 AES
* @param[in] kasme Key for MME as provided by AUC
* @param[out] knas Truncated ouput key as derived by KDF
*/
/*int derive_key_nas(algorithm_type_dist_t nas_alg_type, uint8_t nas_enc_alg_id,
const uint8_t kasme[32], uint8_t** knas)
{
uint8_t s[7];
uint8_t knas_temp[32];
// FC
s[0] = 0x15;
// P0 = algorithm type distinguisher
s[1] = nas_alg_type & 0xFF;
// L0 = length(P0) = 1
s[2] = 0x00;
s[3] = 0x01;
// P1
s[4] = nas_enc_alg_id;
// L1 = length(P1) = 1
s[5] = 0x00;
s[6] = 0x01;
kdf((uint8_t*)kasme, 32, s, 7, (uint8_t**)&knas_temp, 32);
// Truncate the generate key to 128 bits
memcpy(knas, knas_temp, 16);
return 0;
}
*/