smp_calculate_f5() function

* Function smp_calculate_f5 * Description The function provides two AES-CMAC that are supposed to be used as * - MacKey (MacKey is used in pairing DHKey check calculation); * - LTK (LTK is used to ecrypt the link after completion of Phase 2 * and on reconnection, to derive BR/EDR LK). * The function inputs are W, N1, N2, A1, A2. * F5 rules: * - the value used as key in MacKey/LTK (T) is calculated * (function smp_calculate_f5_key(...)); * The formula is: * T = AES-CMAC (W) * salt * where salt is internal parameter of smp_calculate_f5_key(...). * - MacKey and LTK are calculated as AES-MAC values received with the * key T calculated in the previous step and the plaintext message * built from the external parameters N1, N2, A1, A2 and the internal * parameters counter, keyID, length. * The function smp_calculate_f5_mackey_or_long_term_key(...) is used in the * calculations. * The same formula is used in calculation of MacKey and LTK and the * same parameter values except the value of the internal parameter * counter: * - in MacKey calculations the value is 0; * - in LTK calculations the value is 1. * MacKey = AES-CMAC (Counter=0||keyID||N1||N2||A1||A2||Length=256) * T * LTK = AES-CMAC (Counter=1||keyID||N1||N2||A1||A2||Length=256) * T * The parameters are * input: * W is 256 bits, * N1 is 128 bits, * N2 is 128 bits, * A1 is 56 bit, * A2 is 56 bit. * internal: * Counter is 8 bits, its value is 0 for MacKey, * 1 for LTK; * KeyId is 32 bits, its value is * 0x62746c65 (MSB~LSB); * Length is 16 bits, its value is 0x0100 * (MSB~LSB). * output: * MacKey is 128 bits; * LTK is 128 bits * Returns FALSE if out of resources, TRUE in other cases. * Note The LSB is the first octet, the MSB is the last octet of * the AES-CMAC input/output stream.