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LoRaMacCrypto.h
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00001 /*! 00002 * \file LoRaMacCrypto.h 00003 * 00004 * \brief LoRa MAC layer cryptography implementation 00005 * 00006 * \copyright Revised BSD License, see section \ref LICENSE. 00007 * 00008 * \code 00009 * ______ _ 00010 * / _____) _ | | 00011 * ( (____ _____ ____ _| |_ _____ ____| |__ 00012 * \____ \| ___ | (_ _) ___ |/ ___) _ \ 00013 * _____) ) ____| | | || |_| ____( (___| | | | 00014 * (______/|_____)_|_|_| \__)_____)\____)_| |_| 00015 * (C)2013 Semtech 00016 * 00017 * ___ _____ _ ___ _ _____ ___ ___ ___ ___ 00018 * / __|_ _/_\ / __| |/ / __/ _ \| _ \/ __| __| 00019 * \__ \ | |/ _ \ (__| ' <| _| (_) | / (__| _| 00020 * |___/ |_/_/ \_\___|_|\_\_| \___/|_|_\\___|___| 00021 * embedded.connectivity.solutions=============== 00022 * 00023 * \endcode 00024 * 00025 * \author Miguel Luis ( Semtech ) 00026 * 00027 * \author Gregory Cristian ( Semtech ) 00028 * 00029 * \author Daniel Jäckle ( STACKFORCE ) 00030 * 00031 * \defgroup LORAMAC_CRYPTO LoRa MAC layer cryptography implementation 00032 * This module covers the implementation of cryptographic functions 00033 * of the LoRaMAC layer. 00034 * \{ 00035 */ 00036 #ifndef __LORAMAC_CRYPTO_H__ 00037 #define __LORAMAC_CRYPTO_H__ 00038 00039 /*! 00040 * Computes the LoRaMAC frame MIC field 00041 * 00042 * \param [IN] buffer - Data buffer 00043 * \param [IN] size - Data buffer size 00044 * \param [IN] key - AES key to be used 00045 * \param [IN] address - Frame address 00046 * \param [IN] dir - Frame direction [0: uplink, 1: downlink] 00047 * \param [IN] sequenceCounter - Frame sequence counter 00048 * \param [OUT] mic - Computed MIC field 00049 */ 00050 void LoRaMacComputeMic( const uint8_t *buffer, uint16_t size, const uint8_t *key, uint32_t address, uint8_t dir, uint32_t sequenceCounter, uint32_t *mic ); 00051 00052 /*! 00053 * Computes the LoRaMAC payload encryption 00054 * 00055 * \param [IN] buffer - Data buffer 00056 * \param [IN] size - Data buffer size 00057 * \param [IN] key - AES key to be used 00058 * \param [IN] address - Frame address 00059 * \param [IN] dir - Frame direction [0: uplink, 1: downlink] 00060 * \param [IN] sequenceCounter - Frame sequence counter 00061 * \param [OUT] encBuffer - Encrypted buffer 00062 */ 00063 void LoRaMacPayloadEncrypt ( const uint8_t *buffer, uint16_t size, const uint8_t *key, uint32_t address, uint8_t dir, uint32_t sequenceCounter, uint8_t *encBuffer ); 00064 00065 /*! 00066 * Computes the LoRaMAC payload decryption 00067 * 00068 * \param [IN] buffer - Data buffer 00069 * \param [IN] size - Data buffer size 00070 * \param [IN] key - AES key to be used 00071 * \param [IN] address - Frame address 00072 * \param [IN] dir - Frame direction [0: uplink, 1: downlink] 00073 * \param [IN] sequenceCounter - Frame sequence counter 00074 * \param [OUT] decBuffer - Decrypted buffer 00075 */ 00076 void LoRaMacPayloadDecrypt ( const uint8_t *buffer, uint16_t size, const uint8_t *key, uint32_t address, uint8_t dir, uint32_t sequenceCounter, uint8_t *decBuffer ); 00077 00078 /*! 00079 * Computes the LoRaMAC Join Request frame MIC field 00080 * 00081 * \param [IN] buffer - Data buffer 00082 * \param [IN] size - Data buffer size 00083 * \param [IN] key - AES key to be used 00084 * \param [OUT] mic - Computed MIC field 00085 */ 00086 void LoRaMacJoinComputeMic ( const uint8_t *buffer, uint16_t size, const uint8_t *key, uint32_t *mic ); 00087 00088 /*! 00089 * Computes the LoRaMAC join frame decryption 00090 * 00091 * \param [IN] buffer - Data buffer 00092 * \param [IN] size - Data buffer size 00093 * \param [IN] key - AES key to be used 00094 * \param [OUT] decBuffer - Decrypted buffer 00095 */ 00096 void LoRaMacJoinDecrypt ( const uint8_t *buffer, uint16_t size, const uint8_t *key, uint8_t *decBuffer ); 00097 00098 /*! 00099 * Computes the LoRaMAC join frame decryption 00100 * 00101 * \param [IN] key - AES key to be used 00102 * \param [IN] appNonce - Application nonce 00103 * \param [IN] devNonce - Device nonce 00104 * \param [OUT] nwkSKey - Network session key 00105 * \param [OUT] appSKey - Application session key 00106 */ 00107 void LoRaMacJoinComputeSKeys ( const uint8_t *key, const uint8_t *appNonce, uint16_t devNonce, uint8_t *nwkSKey, uint8_t *appSKey ); 00108 00109 /*! \} defgroup LORAMAC */ 00110 00111 #endif // __LORAMAC_CRYPTO_H__
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