66 lines
2.1 KiB
C
66 lines
2.1 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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#include "nr_pdcp_integrity_nia1.h"
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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#include <openssl/cmac.h>
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#include "openair3/SECU/secu_defs.h"
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#include "openair3/SECU/key_nas_deriver.h"
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void *nr_pdcp_integrity_nia1_init(unsigned char *integrity_key)
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{
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nas_stream_cipher_t *ret;
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ret = calloc(1, sizeof(*ret)); if (ret == NULL) abort();
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ret->key = malloc(16); if (ret->key == NULL) abort();
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memcpy(ret->key, integrity_key, 16);
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ret->key_length = 16; /* unused */
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return ret;
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}
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void nr_pdcp_integrity_nia1_integrity(void *integrity_context,
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unsigned char *out,
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unsigned char *buffer, int length,
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int bearer, int count, int direction)
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{
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nas_stream_cipher_t *ctx = integrity_context;
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ctx->message = buffer;
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ctx->count = count;
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ctx->bearer = bearer-1;
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ctx->direction = direction;
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ctx->blength = length * 8;
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stream_compute_integrity(EIA1_128_ALG_ID, ctx, out);
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}
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void nr_pdcp_integrity_nia1_free_integrity(void *integrity_context)
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{
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nas_stream_cipher_t *ctx = integrity_context;
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free(ctx->key);
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free(ctx);
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}
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