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+/**
+****************************************************************************************
+*
+* @file bt_util_key.h
+*
+* @brief link manager key management
+*
+* Copyright (C) RivieraWaves 2009-2015
+*
+*
+****************************************************************************************
+*/
+#ifndef BT_UTIL_KEY_H_
+#define BT_UTIL_KEY_H_
+/**
+****************************************************************************************
+* @defgroup LMKEY Link Keys
+* @ingroup LM
+* @brief LM module for link key management.
+* @{
+****************************************************************************************
+*/
+
+/*
+ * INCLUDE FILES
+ ****************************************************************************************
+ */
+
+#include "co_bt.h"          // BT standard definitions
+
+/*
+ * FUNCTION DECLARATIONS
+ ****************************************************************************************
+ */
+
+/**
+ ****************************************************************************************
+ * @brief Processes E1 algorithm for Authentication
+ *
+ * @param[in]  Key       Key Vector[16]
+ * @param[in]  BdAddr    BdAddr[6]
+ * @param[in]  Random    Random Vector[16]
+ * @param[out] Sres      SRES Vector[4]
+ * @param[out] Aco       ACIO Vector[12]
+ *
+ ****************************************************************************************
+ */
+void E1(struct ltk Key, struct bd_addr BdAddr, struct ltk Random, struct sres_nb *Sres, struct aco *Aco);
+
+/**
+ ****************************************************************************************
+ * @brief Processes E21 algorithm for Authentication
+ *
+ * @param[in]  Random      Random Vector[16]
+ * @param[in]  BdAddr      BdAddr[6]
+ * @param[out] Key         Result Vector[16]
+ *
+ ****************************************************************************************
+ */
+void E21(struct ltk Random, struct bd_addr BdAddr, struct ltk *Key);
+
+/**
+ ****************************************************************************************
+ * @brief Processes E22 algorithm for Authentication
+ *
+ * @param[in]  Random    Random Vector[16]
+ * @param[in]  BdAddr    BdAddr[6]
+ * @param[in]  Pin       PIN Vector[1..16]
+ * @param[in]  PinLen    PIN length (1..16)
+ * @param[out] KeyOut    Result Vector[16]
+ *
+ ****************************************************************************************
+ */
+void E22(struct ltk Random, struct bd_addr BdAddr, struct pin_code Pin, uint8_t PinLen, struct ltk *KeyOut);
+/**
+ ****************************************************************************************
+ * @brief Processes E3 algorithm for Authentication
+ *
+ * @param[in]  Key       Key Vector[16]
+ * @param[in]  Cof       COF[12]
+ * @param[in]  Random    Random Vector[16]
+ * @param[out] KeyOut    Result Vector[16]
+ *
+ ****************************************************************************************
+ */
+void E3(struct ltk Key, struct aco Cof, struct ltk Random, struct ltk *KeyOut);
+
+/**
+ ****************************************************************************************
+ * @brief Encryption : Processes K'c Key for encryption
+ *
+ * @param[in]  Random      Random Vector[16]
+ * @param[in]  BdAddr      BdAddr[6]
+ * @param[out] KPrimC      K'c Vector (Result)
+ *
+ ****************************************************************************************
+ */
+void KPrimC(struct ltk Kc, uint8_t length, struct ltk *KPrimC);
+
+/**
+ ****************************************************************************************
+ * @brief Xor of 2 Vectors
+ *
+ * @param[in]  VectorIn1      Input Vector1 [16]
+ * @param[in]  VectorIn2      Input Vector2 [16]
+ * @param[out] VectorOut      Result Vector[16]
+ *
+ ****************************************************************************************
+ */
+void XorKey(struct ltk VectorIn1, struct ltk VectorIn2, struct ltk *VectorOut);
+
+/**
+ ****************************************************************************************
+ * @brief This function is used to get a random vector.
+ *
+ * @param[out] Vector      Random Vector
+ *
+ ****************************************************************************************
+ */
+void LM_MakeRandVec(struct ltk *Vector);
+
+///@} LMKEY
+
+#endif // BT_UTIL_KEY_H_