Update caesar chipher

caesar.c

@@ -1,4 +1,4 @@
-#include "cesar.h"
+#include "caesar.h"
 
 /*
 	s -> path source
@@ -6,17 +6,18 @@
 	key -> key of encryption
 	This function encrypt data
 */
-int cryptCesar(const char *s, const int key, const int countCharact, char *bufferDst) {
+int cryptCaesar(const char *s, const int key, const int countCharact, char *bufferDst) {
 	char *buffer;
 	int i;
 	int error = countCharact;
+	char c = 0;
 
 	if(error == -1) return error;
 
 	/* Allocation dynamique */
 	buffer = malloc(countCharact + 1); /* + 1 for '\0' */
 
-	/* Copy the data of file in the buffer[] */
+	/* Copy the data of file into the buffer[] */
 	error = copyFile(s, buffer);
 	if(error != 0) return error;
 
@@ -25,17 +26,13 @@ int cryptCesar(const char *s, const int key, const int countCharact, char *buffe
 		int val = 0;
 		/* For characters of A to Z */
 		if(buffer[i] >= 'A' && buffer[i] <= 'Z') {
-			if(buffer[i] + key > 'Z')
+			c = buffer[i] - 'A';
-				val = ((buffer[i] - 'A')-26) + key + 'A';
+			val = ((c + key) % 26) + 'A';
-			else
-				val = (buffer[i] - 'A') + key + 'A';
 		}
 		/* For characters of 'a' to 'z' */
 		else if(buffer[i] >= 'a' && buffer[i] <= 'z') {
-			if(buffer[i] + key > 'z')
+			c = buffer[i] - 'a';
-				val = ((buffer[i] - 'a')- 26) + key + 'A';
+				val = ((c + key) % 26) + 'A';
-			else
-				val = (buffer[i] - 'a') + key + 'A';
 		}
 		/* For others characters */
 		else val = buffer[i];
@@ -56,7 +53,7 @@ int cryptCesar(const char *s, const int key, const int countCharact, char *buffe
 	key -> key of decryption
 	This function decryption by Cesar
 */
-int decryptCesar(const char *s, const int key, const int countCharact, char *bufferDst) {
+int decryptCaesar(const char *s, const int key, const int countCharact, char *bufferDst) {
 	int error = countCharact;
 	char *buffer;
 	int i;
@@ -67,7 +64,7 @@ int decryptCesar(const char *s, const int key, const int countCharact, char *buf
 	/* Allocation dynamique */
 	buffer = malloc(countCharact + 1); /* +1 for '\0' */
 
-	/* Copy the data from file to buffer */
+	/* Copy the data from file into buffer */
 	error = copyFile(s, buffer);
 	if(error != 0) return error;
 

caesar.h

@@ -0,0 +1,12 @@
+#ifndef H_INFLATE
+#define H_INFLATE
+
+#define SIZE_MAX_FILE 8192
+
+#include "functions.h"
+
+/* Functions */
+int cryptCaesar(const char *s, const int key, const int countCharact, char *bufferDst);
+int decryptCaesar(const char *s, const int key, const int countCharact, char *bufferDst);
+
+#endif

cesar.h

@@ -1,13 +0,0 @@
-#ifndef H_INFLATE
-#define H_INFLATE
-
-#define SIZE_MAX_FILE 8192
-
-#include "functions.h"
-
-/* Functions */
-void inflate();
-int cryptCesar(const char *s, const int key, const int countCharact, char *bufferDst);
-int decryptCesar(const char *s, const int key, const int countCharact, char *bufferDst);
-
-#endif

exec.sh

@@ -1,3 +1,3 @@
 #!/bin/sh
 
-gcc -W main.c functions.c cesar.c vigenere.c -o main && ./main $1 $2 $3 $4
+gcc -W main.c functions.c caesar.c vigenere.c -o main && ./main $1 $2 $3 $4

main.c

@@ -1,5 +1,5 @@
 #include "functions.h"
-#include "cesar.h"
+#include "caesar.h"
 #include "vigenere.h"
 
 int main(int argc, char *argv[]) {
@@ -71,6 +71,7 @@ int main(int argc, char *argv[]) {
 	buffer = malloc(sizeof(int) * numberCharacters);
 	memset(buffer, 0, sizeof(int) * numberCharacters);
 
+  // Caesar cipher
 	if(strcmp(argv[1], "-c") == 0){
 		// Get key
 		int key;
@@ -81,9 +82,9 @@ int main(int argc, char *argv[]) {
 		}while(key < 1 || key > 26);
 
 		if(strcmp(hook, "crypt") == 0)
-			error = cryptCesar(fileSrc, key, numberCharacters, buffer);
+			error = cryptCaesar(fileSrc, key, numberCharacters, buffer);
 		if(strcmp(hook, "decrypt") == 0)
-			error = decryptCesar(fileSrc, key, numberCharacters, buffer);
+			error = decryptCaesar(fileSrc, key, numberCharacters, buffer);
 	}
 	else if(strcmp(argv[1], "-v") == 0){
 		// Get key

test.txt.crypt

@@ -0,0 +1,2 @@
+JGNNQ YQTNF!
+LG UWKU WP OGUUCIG GP ENCKT !!

test.txt.crypt.decrypt

@@ -1,2 +0,0 @@
-HELLO WORLD!
-JE SUIS UN MESSAGE EN CLAIR !!