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Author: NikosDls

read.c

@@ -0,0 +1,63 @@
+#include <stdio.h>
+#include <string.h>
+
+// AES 128bit = 16 bytes
+#define BYTES 16
+
+int main(){
+	unsigned char plainText[BYTES];	// plaintext	
+	unsigned char key[BYTES];		// encryption key
+	unsigned short int sizeCheck;	// temporary saving the length of plaintext and key
+	
+	unsigned int plainTextHEX[BYTES];	// plaintext in hexadecimal
+	unsigned int keyHEX[BYTES];			// key in hexadecimal
+	
+	int i;	// counter for loops
+	
+	// read the text for encryption
+	do{
+		printf("Text: ");
+		gets(plainText);
+		//scanf("%[^\n]s", plainText);
+		
+		// clear the input buffer
+		fflush(stdin);
+		
+		// save the length of plaitext
+		sizeCheck = strlen(plainText);
+	}while(sizeCheck != BYTES);	
+	
+	// print the plaintext as a string and in hexadecimal form
+	printf("%s = ", plainText);
+	for(i = 0; i < BYTES; i++){
+		// saving hexadecimal value to new array
+		plainTextHEX[i] = plainText[i];
+		printf("%x  ", plainTextHEX[i]);
+	}
+	
+	// line feed
+	printf("\n\n");
+	
+	// read the key for encryption
+	do{
+		printf("Key: ");
+		gets(key);
+		//scanf("%[^\n]s", key);
+			
+		// clear the input buffer
+		fflush(stdin);
+		
+		// save the length of key
+		sizeCheck = strlen(key);
+	}while(sizeCheck != BYTES);	
+
+	// print the key as a string and in hexadecimal form
+	printf("%s = ", key);
+	for(i = 0; i < BYTES; i++){
+		// saving hexadecimal value to new array
+		keyHEX[i] = key[i];
+		printf("%x  ", keyHEX[i]);
+	}
+	
+return 0;
+}