add des alias for des-cbc

src/des/ft_des_usage.c

@@ -18,7 +18,7 @@ void	ft_des_usage
 )
 {
 	ft_putstr("des cipher usage:\n\n");
-	ft_putstr("ft_ssl des-{mode} [flags]\n\n");
+	ft_putstr("ft_ssl des|des-{mode} [flags]\n\n");
 	ft_putstr("flags:\n");
 	ft_putstr(" -a\t\tdecode/encode the input/output in base64\n");
 	ft_putstr(" -e\t\tecrypt mode\n");
@@ -30,6 +30,7 @@ void	ft_des_usage
 	ft_putstr(" -s salt\tsalt in hex format\n");
 	ft_putstr(" -v vector\tinitialization vector in hex format\n\n");
 	ft_putstr("where {mode} is one of:\n");
-	ft_putstr("ecb\ncbc\npcbc\n");
+	ft_putstr("ecb\ncbc\npcbc\n\n");
+	ft_putstr("des cipher is an alias for des-cbc.\n");
 	exit(1);
 }

src/ft_ssl_usage.c

@@ -19,7 +19,7 @@ void	ft_ssl_usage(void)
 	ft_putstr("Message Digest commands:\n");
 	ft_putstr("md5\nsha256\nsha224\n\n");
 	ft_putstr("Cipher commands:\n");
-	ft_putstr("base64\ndes-ecb\ndes-cbc\ndes-pcbc\n\n");
+	ft_putstr("base64\ndes\ndes-ecb\ndes-cbc\ndes-pcbc\n\n");
 	ft_putstr("To get help for specific command:\n");
 	ft_putstr("ft_ssl command -h\n\n");
 	exit(1);

src/main.c

@@ -34,6 +34,10 @@ t_algorithm g_algorithms[] = {
 		"base64",
 		ft_base64,
 	},
+	{
+		"des",
+		ft_des_cbc,
+	},
 	{
 		"des-ecb",
 		ft_des_ecb,