OOP HomeWork

oop_hw2/oop_hw2_1/Q1.cpp

@@ -0,0 +1,61 @@
+#include <iostream>
+#include <cstdlib>
+
+#include <iostream>
+#include <cstdlib>
+
+class TRandom {
+private:
+    unsigned long seed;
+public:
+    TRandom(unsigned long s) : seed(s) {}
+    unsigned char NextByte() {
+        seed = seed * 1103515245 + 12345;
+        return static_cast<unsigned char>((seed / 65536) % 256);
+    }
+};
+
+void Coder(unsigned char data[], int len, unsigned long key) {
+    TRandom rand(key);
+    for (int i = 0; i < len; ++i) {
+        data[i] ^= rand.NextByte();
+    }
+}
+
+void Coder(unsigned char data[], int len, TRandom& rand, unsigned long key) {
+    for (int i = 0; i < len; ++i) {
+        data[i] ^= rand.NextByte();
+    }
+}
+
+class Crypter {
+private:
+    TRandom rand;
+public:
+    Crypter(unsigned long seed) : rand(seed) {}
+    void Process(unsigned char data[], int len) {
+        for (int i = 0; i < len; ++i) {
+            data[i] ^= rand.NextByte();
+        }
+    }
+};
+
+void Test() {
+    unsigned char msg[] = "Hello World";
+    int len = sizeof(msg);
+    unsigned long key = 12345;
+    std::cout << "Original: " << msg << std::endl;
+    Coder(msg, len, key);
+    std::cout << "Encrypted: "; for (int i = 0; i < len; ++i) std::cout << msg[i]; std::cout << std::endl;
+    Coder(msg, len, key);
+    std::cout << "Decrypted: " << msg << std::endl;
+}
+
+
+int main(){
+	Test(); 
+	return 0;
+} 
+
+// <20><><EFBFBD><EFBFBD>3<EFBFBD><33><EFBFBD><EFBFBD> rand <20><>Ϊ TRandom rand<6E><64><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD><EFBFBD>ᶪʧԭ״̬<D7B4><CCAC><EFBFBD>ظ<EFBFBD><D8B8><EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD>ӣ<EFBFBD><D3A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+// <20><><EFBFBD><EFBFBD>4<EFBFBD><34><EFBFBD><EFBFBD>Ϊ const TRandom& rand<6E><64><EFBFBD><EFBFBD><EFBFBD>У<EFBFBD><D0A3><EFBFBD>Ϊ NextByte <20>ı<EFBFBD><C4B1><EFBFBD><EFBFBD><EFBFBD>״̬<D7B4><CCAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> const