凯撒加密
记录点滴。
CString my_sec;
CString ming;
CString mi;
CString jie;
1 void CSEC_Dlg::OnBnClickedButton1() 2 { 3 UpdateData(TRUE); 4 5 if (((CButton *)GetDlgItem(IDC_RADIO2))->GetCheck()) 6 {//选定凯撒加密 7 int sec = _wtoi(my_sec.GetBuffer()); 8 if (sec < -26) 9 { 10 int a = -sec; 11 sec = (a % 26); 12 } 13 if (sec < 0 && sec >= -26) 14 sec += 26; 15 else 16 sec = sec % 26; 17 mi = ming; 18 for (int i = 0; i < ming.GetLength(); i++) 19 { 20 if (ming.GetAt(i) >= 'A' && ming.GetAt(i) <= 'Z') 21 mi.SetAt(i, 'A' + (ming.GetAt(i) - 'A' + sec % 26) % 26); 22 else if (ming.GetAt(i) >= 'a' && ming.GetAt(i) <= 'z') 23 mi.SetAt(i, 'a' + (ming.GetAt(i) - 'a' + sec % 26) % 26); 24 else if (ming.GetAt(i) >= '0' && ming.GetAt(i) <= '9') 25 mi.SetAt(i, '0' + (ming.GetAt(i) - '0' + sec % 10) % 10); 26 } 27 UpdateData(FALSE); 28 } 29 else if (((CButton *)GetDlgItem(IDC_RADIO1))->GetCheck()) 30 {//变位加密 31 int a, length = my_sec.GetLength(); 32 wchar_t *buffer = new wchar_t[length]; 33 wchar_t wchar[1] = { 0 }; //用于wchar_t 转 int 34 mi = ming; 35 if (ming.GetLength() != my_sec.GetLength()) 36 { 37 mi = "ERROR,输入长度不一致！"; 38 UpdateData(FALSE); 39 //exit(1); 40 } 41 else 42 { 43 for (int i = 0; i < length; i++) 44 { 45 buffer[i] = ming.GetAt(i); 46 } 47 for (int i = 0; i < length; i++) 48 { 49 wchar[0] = my_sec.GetAt(i); 50 a = _wtoi(wchar); 51 mi.SetAt(i, buffer[a - 1]); 52 } 53 delete[] buffer; 54 UpdateData(FALSE); 55 } 56 } 57 else if (((CButton *)GetDlgItem(IDC_RADIO3))->GetCheck()) 58 {//矩阵加密 59 int a, i, j, length = my_sec.GetLength(); 60 wchar_t wchar[1] = { 0 }; //用于wchar_t 转 int 61 wchar_t *buffer = new wchar_t[3 * length]; 62 wchar_t ** Matrix = new wchar_t*[3]; // 3 * length 矩阵 Matrix 63 for (i = 0; i < 3; i++) 64 Matrix[i] = new wchar_t[length]; 65 wchar_t ** Out = new wchar_t*[3]; // 3 * length 矩阵 Out 66 for (i = 0; i < 3; i++) 67 Out[i] = new wchar_t[length]; 68 69 for (i = 0; i < ming.GetLength(); i++) 70 buffer[i] = ming.GetAt(i); 71 if (ming.GetLength() < (3 * length)) 72 { 73 for (i = ming.GetLength(); i < (3 * length); i++) 74 buffer[i] = '0'; //不足补齐0 75 } 76 mi = buffer; 77 for (i = 0; i < 3; i++) 78 for (j = 0; j < length; j++) 79 Matrix[i][j] = buffer[i*length + j]; 80 for (i = 0; i < length; i++) 81 { 82 wchar[0] = my_sec.GetAt(i); 83 a = _wtoi(wchar); 84 for (j = 0; j < 3; j++) //矩阵列变换 85 Out[j][i] = Matrix[j][a-1]; 86 } 87 for (i = 0; i < 3; i++) 88 for (j = 0; j < length; j++) 89 { 90 mi.SetAt((i*length + j), Out[i][j]); 91 } 92 93 delete[] buffer; //释放空间 94 for (i = 0; i < 3; i++) 95 delete[]Matrix[i]; 96 delete[]Matrix; 97 for (i = 0; i < 3; i++) 98 delete[]Out[i]; 99 delete[]Out; 100 UpdateData(FALSE); 101 } 102 } 103 104 void CSEC_Dlg::OnBnClickedButton2() 105 { 106 UpdateData(TRUE); 107 108 if (((CButton *)GetDlgItem(IDC_RADIO2))->GetCheck()) 109 {//凯撒解密 110 int sec = _wtoi(my_sec.GetBuffer()); 111 if (sec < -26) 112 { 113 int a = -sec; 114 sec = -(a % 26); 115 } 116 if (sec < 0 && sec >= -26) 117 sec += 26; 118 else 119 sec = sec % 26; 120 jie = mi; 121 for (int i = 0; i < mi.GetLength(); i++) 122 { 123 if (mi.GetAt(i) >= 'A' && mi.GetAt(i) <= 'Z') 124 { 125 if (mi.GetAt(i) < ming.GetAt(i)) //密文在明文前面 126 jie.SetAt(i, mi.GetAt(i) + (26 - sec) % 26); 127 else 128 jie.SetAt(i, mi.GetAt(i) - sec % 26); 129 } 130 else if (mi.GetAt(i) >= 'a' && mi.GetAt(i) <= 'z') 131 { 132 if (mi.GetAt(i) < ming.GetAt(i)) 133 jie.SetAt(i, mi.GetAt(i) + (26 - sec) % 26); 134 else 135 jie.SetAt(i, mi.GetAt(i) - sec % 26); 136 } 137 else if (mi.GetAt(i) >= '0' && mi.GetAt(i) <= '9') 138 { 139 if (mi.GetAt(i) < ming.GetAt(i)) 140 jie.SetAt(i, mi.GetAt(i) + (10 - sec % 10) % 10); //因为sec可以大于10 141 else 142 jie.SetAt(i, mi.GetAt(i) - sec % 10); 143 } 144 } 145 UpdateData(FALSE); 146 } 147 else if (((CButton *)GetDlgItem(IDC_RADIO1))->GetCheck()) 148 {//变位解密 149 int a, length = my_sec.GetLength(); 150 wchar_t *buffer = new wchar_t[length]; 151 wchar_t wchar[1] = { 0 }; 152 jie = mi; 153 for (int i = 0; i < length; i++) 154 {//Init 155 buffer[i] = mi.GetAt(i); 156 } 157 for (int i = 0; i < length; i++) 158 { 159 wchar[0] = my_sec.GetAt(i); 160 a = _wtoi(wchar); 161 jie.SetAt(i, buffer[a - 1]); 162 } 163 delete[] buffer; 164 UpdateData(FALSE); 165 } 166 else if (((CButton *)GetDlgItem(IDC_RADIO3))->GetCheck()) 167 {//矩阵解密 168 int a, i, j, length = my_sec.GetLength(); 169 wchar_t wchar[1] = { 0 }; //用于wchar_t 转 int 170 wchar_t ** Matrix = new wchar_t*[3]; // 3 * length 矩阵 Matrix 171 for (i = 0; i < 3; i++) 172 Matrix[i] = new wchar_t[length]; 173 wchar_t ** Out = new wchar_t*[3]; // 3 * length 矩阵 Out 174 for (i = 0; i < 3; i++) 175 Out[i] = new wchar_t[length]; 176 177 jie = mi; 178 for (i = 0; i < 3; i++) 179 for (j = 0; j < length; j++) 180 Matrix[i][j] = mi.GetAt(i*length + j); 181 for (i = 0; i < length; i++) 182 { 183 wchar[0] = my_sec.GetAt(i); 184 a = _wtoi(wchar); 185 for (j = 0; j < 3; j++) //矩阵列变换 186 Out[j][i] = Matrix[j][a - 1]; 187 } 188 for (i = 0; i < 3; i++) 189 for (j = 0; j < length; j++) 190 { 191 jie.SetAt((i*length + j), Out[i][j]); 192 } 193 194 for (i = 0; i < 3; i++) //释放空间 195 delete[]Matrix[i]; 196 delete[]Matrix; 197 for (i = 0; i < 3; i++) 198 delete[]Out[i]; 199 delete[]Out; 200 UpdateData(FALSE); 201 } 202 }
