1 | /* |
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2 | * $Id: Encryption.cpp 81 2008-04-15 18:40:01Z rosiere $ |
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3 | * |
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4 | * [ Description ] |
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5 | * |
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6 | */ |
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7 | |
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8 | #include "Behavioural/Custom/include/Encryption.h" |
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9 | |
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10 | namespace morpheo { |
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11 | namespace behavioural { |
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12 | namespace custom { |
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13 | namespace encryption { |
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14 | |
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15 | static uint32_t _num_group; |
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16 | |
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17 | Encryption::Encryption (uint32_t num_group, |
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18 | Toperation_t operation_encrypt, |
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19 | Toperation_t operation_decrypt) : |
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20 | _operation_encrypt (operation_encrypt), |
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21 | _operation_decrypt (operation_decrypt) |
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22 | { |
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23 | _num_group = num_group; |
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24 | }; |
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25 | |
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26 | uint32_t Encryption::get_nb_register (void) |
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27 | { |
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28 | return 3; |
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29 | }; |
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30 | |
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31 | access_mode_t Encryption::get_access_mode (uint32_t reg) |
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32 | { |
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33 | // All reg is access by supervisor |
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34 | return access_mode_t (SPR_ACCESS_MODE_NONE, SPR_ACCESS_MODE_READ_WRITE); |
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35 | } |
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36 | |
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37 | custom_decod_t * Encryption::get_custom_decod (Toperation_t operation) |
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38 | { |
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39 | // TODO !!!!! |
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40 | return NULL; |
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41 | } |
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42 | |
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43 | custom_execute_genMoore_t * Encryption::get_custom_execute_genMoore (Toperation_t operation) |
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44 | { |
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45 | if (operation == _operation_encrypt) |
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46 | return &(morpheo::behavioural::custom::encryption::Encryption::function_encrypt); |
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47 | if (operation == _operation_decrypt) |
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48 | return &(morpheo::behavioural::custom::encryption::Encryption::function_decrypt); |
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49 | |
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50 | return &(morpheo::behavioural::core::multi_execute_loop::execute_loop::multi_execute_unit::execute_unit::functionnal_unit::operation_unimplemented); // unimplemented function |
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51 | } |
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52 | |
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53 | custom_execute_transition_t * Encryption::get_custom_execute_transition (void) |
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54 | { |
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55 | // No treatment a the end cycle |
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56 | return NULL; |
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57 | } |
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58 | |
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59 | custom_execute_transition_t * Encryption::get_custom_execute_reset (void) |
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60 | { |
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61 | // No treatment a the end cycle |
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62 | return NULL; |
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63 | } |
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64 | |
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65 | void Encryption::function_encrypt (morpheo::behavioural::core::multi_execute_loop::execute_loop::multi_execute_unit::execute_unit::functionnal_unit::execute_operation_t * op, |
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66 | morpheo::behavioural::core::multi_execute_loop::execute_loop::multi_execute_unit::execute_unit::functionnal_unit::execute_register_t * reg, |
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67 | morpheo::behavioural::core::multi_execute_loop::execute_loop::multi_execute_unit::execute_unit::functionnal_unit::execute_param_t * param) |
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68 | { |
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69 | std::cout << "<Encryption::function_decrypt> Operation : encrypt" << std::endl; |
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70 | |
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71 | Tgeneral_data_t data = unsigned(op->_data_ra); |
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72 | |
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73 | Tgeneral_data_t key = reg->_spr[_num_group][num_register_key ]; |
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74 | Tgeneral_data_t shift = reg->_spr[_num_group][num_register_shift]; |
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75 | Tgeneral_data_t rool = reg->_spr[_num_group][num_register_role ]; |
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76 | |
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77 | for (Tgeneral_data_t i=0 ; i<rool; i++) |
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78 | { |
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79 | data ^= key; |
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80 | data = rotate_right<Tgeneral_data_t>(param->_size_data,data,shift); |
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81 | } |
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82 | |
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83 | // Result |
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84 | |
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85 | op->_timing = morpheo::behavioural::core::multi_execute_loop::execute_loop::multi_execute_unit::execute_unit::functionnal_unit::execute_timing_t(rool, rool); |
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86 | op->_data_rd = data; |
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87 | //op->_data_re = 0; |
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88 | op->_exception = EXCEPTION_ALU_NONE; |
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89 | op->_no_sequence = 0; |
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90 | //op->_address = 0; |
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91 | }; |
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92 | |
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93 | void Encryption::function_decrypt (morpheo::behavioural::core::multi_execute_loop::execute_loop::multi_execute_unit::execute_unit::functionnal_unit::execute_operation_t * op, |
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94 | morpheo::behavioural::core::multi_execute_loop::execute_loop::multi_execute_unit::execute_unit::functionnal_unit::execute_register_t * reg, |
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95 | morpheo::behavioural::core::multi_execute_loop::execute_loop::multi_execute_unit::execute_unit::functionnal_unit::execute_param_t * param) |
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96 | { |
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97 | std::cout << "<Encryption::function_decrypt> Operation : decrypt" << std::endl; |
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98 | |
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99 | Tgeneral_data_t data = unsigned(op->_data_ra); |
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100 | |
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101 | Tgeneral_data_t key = reg->_spr[_num_group][num_register_key ]; |
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102 | Tgeneral_data_t shift = reg->_spr[_num_group][num_register_shift]; |
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103 | Tgeneral_data_t rool = reg->_spr[_num_group][num_register_role ]; |
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104 | |
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105 | for (Tgeneral_data_t i=0 ; i<rool; i++) |
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106 | { |
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107 | data = rotate_left<Tgeneral_data_t>(param->_size_data,data,shift); |
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108 | data ^= key; |
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109 | } |
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110 | |
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111 | // Result |
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112 | op->_timing = morpheo::behavioural::core::multi_execute_loop::execute_loop::multi_execute_unit::execute_unit::functionnal_unit::execute_timing_t(rool, rool); |
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113 | op->_data_rd = data; |
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114 | //op->_data_re = 0; |
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115 | op->_exception = EXCEPTION_ALU_NONE; |
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116 | op->_no_sequence = 0; |
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117 | //op->_address = 0; |
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118 | }; |
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119 | |
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120 | }; // end namespace encryption |
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121 | }; // end namespace custom |
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122 | }; // end namespace behavioural |
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123 | }; // end namespace morpheo |
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