gauthier
7b5431a62c
git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7886 818b1a75-f10b-46b9-bf7c-635c3b92a50f
85 lines
2.7 KiB
C
85 lines
2.7 KiB
C
/*******************************************************************************
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OpenAirInterface
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Copyright(c) 1999 - 2014 Eurecom
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OpenAirInterface is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenAirInterface is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OpenAirInterface.The full GNU General Public License is
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included in this distribution in the file called "COPYING". If not,
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see <http://www.gnu.org/licenses/>.
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Contact Information
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OpenAirInterface Admin: openair_admin@eurecom.fr
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OpenAirInterface Tech : openair_tech@eurecom.fr
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OpenAirInterface Dev : openair4g-devel@lists.eurecom.fr
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Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
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*******************************************************************************/
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/*! \file snow3g.h
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* \brief
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* \author Open source Adapted from Specification of the 3GPP Confidentiality and
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* Integrity Algorithms UEA2 & UIA2. Document 2: SNOW 3G Specification
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* \integrators Kharbach Othmane, GAUTHIER Lionel.
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* \date 2014
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* \version
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* \note
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* \bug
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* \warning
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*/
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#ifndef SNOW3G_H_
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#define SNOW3G_H_
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typedef struct snow_3g_context_s {
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uint32_t LFSR_S0;
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uint32_t LFSR_S1;
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uint32_t LFSR_S2;
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uint32_t LFSR_S3;
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uint32_t LFSR_S4;
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uint32_t LFSR_S5;
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uint32_t LFSR_S6;
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uint32_t LFSR_S7;
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uint32_t LFSR_S8;
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uint32_t LFSR_S9;
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uint32_t LFSR_S10;
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uint32_t LFSR_S11;
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uint32_t LFSR_S12;
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uint32_t LFSR_S13;
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uint32_t LFSR_S14;
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uint32_t LFSR_S15;
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/* FSM : The Finite State Machine has three 32-bit registers R1, R2 and R3.
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*/
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uint32_t FSM_R1;
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uint32_t FSM_R2;
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uint32_t FSM_R3;
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} snow_3g_context_t;
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/* Initialization.
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* Input k[4]: Four 32-bit words making up 128-bit key.
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* Input IV[4]: Four 32-bit words making 128-bit initialization variable.
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* Output: All the LFSRs and FSM are initialized for key generation.
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*/
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void snow3g_initialize(uint32_t k[4], uint32_t IV[4], snow_3g_context_t *snow_3g_context_pP);
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/* Generation of Keystream.
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* input n: number of 32-bit words of keystream.
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* input z: space for the generated keystream, assumes
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* memory is allocated already.
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* output: generated keystream which is filled in z
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*/
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void snow3g_generate_key_stream(uint32_t n, uint32_t *z, snow_3g_context_t *snow_3g_context_pP);
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#endif
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