Add README.md and Flags: -s -c

Password_manager/include/cryptography.h

@@ -13,12 +13,11 @@ public:
 	~Cryptography();
 	bool encrypt(Buffer* plain, Buffer* encrypted);
 	bool decrypt(Buffer* encrypted, Buffer* decrypted);
+	bool generate_key_and_iv_from_password(const char* password, size_t size);
 
 private:
 	uint8_t key[32] = { 0 };
 	uint8_t iv[16] = { 0 };
 	EVP_CIPHER_CTX* ctx = nullptr;
-
-	bool generate_key_and_iv_from_password(const char* password, size_t size);
 	bool handleErrors();
 };

Password_manager/include/func.h

@@ -20,6 +20,8 @@ enum class Args
 	Delete, // delete password for label
 	Print_all_p, // print all passwords
 	Input, // input password for label
+	Change, // change main password
+	Show, // show password for label
 	Error // error
 };