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Author: gouravthakur39

EncryptDecryptXOR.c

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+#include<stdio.h>
+#include<string.h>
+
+char XORkey[12] = {'F','P','k','k','Y','P','l','p','V','P','L','z'};
+void encryptDecrypt();
+
+int main() {
+	char sampleString[] = " This contains highly sensitive message\n"          \
+                          " coordinates : 23.445, 34.443\n"                    \
+                          " All further messages MUST be send via\n"           \
+                          " XOR encryption only - Long Live Revolution!!\n" ;
+
+
+	printf("\nEncrypted String :\n");
+	encryptDecrypt(sampleString);
+
+	printf("\nDecyrpted String :\n");
+	encryptDecrypt(sampleString);
+
+	return 0;
+}
+
+void encryptDecrypt(char inputString[]) {
+	int i = 0;
+
+	int len = strlen(inputString);
+	for (i = 0; i < len; i++) {
+		inputString[i] = inputString[i] ^ XORkey[i % (sizeof(XORkey)/sizeof(char))];
+		printf("%c", inputString[i]);
+	}
+
+}
+