diff --git a/README.md b/README.md
index 27bd0fe..d8c5479 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@ to encrypt/decrypt message:
 
 ### Python Script
 To encrypt/decrypt message using rsa.
-```
+```python
 from sipher import rsa
 
 rsa.gen_keys()
@@ -44,7 +44,7 @@ signature = rsa.sign(message, privatekey)
 citext = rsa.encrypt(message, publickey)
 
 decrypted_message = rsa.decrypt(citext, privatekey)
-verify(decrypted_message, signature, publickey)
+rsa.verify(decrypted_message, signature, publickey)
 ```
 
 ### Command Line
diff --git a/pyproject.toml b/pyproject.toml
index 8e567ac..2404140 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "sipher"
-version = "1.0.2"
+version = "1.0.3"
 description = "To encrypt and decrypt message."
 readme = "README.md"
 requires-python = ">=3.6"
@@ -13,7 +13,6 @@ authors = [
     { name = "srg", email = "srg.code@pm.me" },
 ]
 dependencies = [
-    "pyperclip",
     "srutil",
     "rsa"
 ]
diff --git a/requirements.txt b/requirements.txt
index 3476bb2..526edad 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,2 @@
 rsa~=4.8
-srutil~=1.0.0
-pyperclip==1.8.2
+srutil~=1.0.0
\ No newline at end of file
diff --git a/sipher/__init__.py b/sipher/__init__.py
index 36606d1..0806aeb 100644
--- a/sipher/__init__.py
+++ b/sipher/__init__.py
@@ -9,7 +9,7 @@
 morse = Morse()
 
 __author__ = 'srg'
-__version__ = '1.0.2'
+__version__ = '1.0.3'
 
 __all__ = [
     'rsa',
diff --git a/sipher/__main__.py b/sipher/__main__.py
index 9acbb2d..50bab5e 100644
--- a/sipher/__main__.py
+++ b/sipher/__main__.py
@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 import os
+import sys
 import argparse
 from srutil import util
 from pathlib import Path
@@ -39,26 +40,38 @@ def get_argument():
     return options
 
 
-def encrypt(s: Sipher, data: str | os.PathLike, key, copy_to_clipboard: bool = False, store: bool = False,
-            store_path: str = None):
-    s.encrypt(data, key.__getitem__(1), copy_to_clipboard=copy_to_clipboard, store=store, store_path=store_path)
+def _remove_unwanted_params(s: Sipher, params: dict) -> dict:
+    method_list = {'encrypt': s.encrypt, 'decrypt': s.decrypt}
+    params_of_method = util.paramsofmethod(method_list.get(util.whocalledme())).keys()
+    new_params = dict()
+    for key, value in params.items():
+        if key in params_of_method:
+            new_params.setdefault(key, value)
+    return new_params
 
 
-def decrypt(s: Sipher, data: str | os.PathLike, key, copy_to_clipboard: bool = False, store: bool = False,
-            store_path: str = None):
-    s.decrypt(data, key.__getitem__(0), copy_to_clipboard=copy_to_clipboard, store=store, store_path=store_path)
+def encrypt(s: Sipher, data: str | os.PathLike, **kwargs):
+    kwargs = _remove_unwanted_params(s, kwargs)
+    s.encrypt(data, **kwargs)
+
+
+def decrypt(s: Sipher, data: str | os.PathLike, **kwargs):
+    kwargs = _remove_unwanted_params(s, kwargs)
+    s.decrypt(data, **kwargs)
 
 
 def main():
     options = get_argument()
     sipher_alg = {'morse': morse, 'rsa': rsa, 'base64': base64}
     s = sipher_alg.get(options.alg)
-    data = util.getinstanceof(options.data, Path) if os.path.exists(options.data) else options.data
+    data = Path(options.data) if os.path.exists(options.data) else options.data
     if options.encrypt:
-        encrypt(s, data, options.key, options.copy_to_clipboard, options.store, options.store_path)
+        encrypt(s, data, pub_key=options.key.__getitem__(1), copy_to_clipboard=options.copy_to_clipboard,
+                store=options.store, store_path=options.store_path)
     elif options.decrypt:
-        decrypt(s, data, options.key, options.copy_to_clipboard, options.store, options.store_path)
+        decrypt(s, data, priv_key=options.key.__getitem__(0), copy_to_clipboard=options.copy_to_clipboard,
+                store=options.store, store_path=options.store_path)
 
 
 if __name__ == "__main__":
-    main()
+    sys.exit(main())
diff --git a/sipher/_base64.py b/sipher/_base64.py
index 693fd9b..f9df66a 100644
--- a/sipher/_base64.py
+++ b/sipher/_base64.py
@@ -5,7 +5,6 @@
 from typing import AnyStr, Optional
 
 from sipher._sipher import Sipher
-from . import sipherutil as su
 
 
 class Base64(Sipher):
@@ -13,7 +12,7 @@ def __init__(self):
         self.__em = ''
         self.__dm = ''
 
-    def encrypt(self, data: AnyStr | os.PathLike[AnyStr], key=None, copy_to_clipboard: bool = False,
+    def encrypt(self, data: AnyStr | os.PathLike[AnyStr], copy_to_clipboard: bool = False,
                 store: bool = False, store_path: Optional[str] = None):
         if isinstance(data, os.PathLike):
             data = self._get_data_from_file(data)
@@ -22,7 +21,7 @@ def encrypt(self, data: AnyStr | os.PathLike[AnyStr], key=None, copy_to_clipboar
         self._copy_store_m(self.__em, self, copy_to_clipboard, store, store_path, encryption=True)
         return self.__em
 
-    def decrypt(self, data: AnyStr | os.PathLike[AnyStr], key=None, copy_to_clipboard: bool = False,
+    def decrypt(self, data: AnyStr | os.PathLike[AnyStr], copy_to_clipboard: bool = False,
                 store: bool = False, store_path: Optional[str] = None):
         if isinstance(data, os.PathLike):
             data = self._get_data_from_file(data)
diff --git a/sipher/_morse.py b/sipher/_morse.py
index a9a5c0e..50d4158 100644
--- a/sipher/_morse.py
+++ b/sipher/_morse.py
@@ -4,7 +4,6 @@
 from typing import AnyStr, Optional
 
 from ._sipher import Sipher
-from . import sipherutil as su
 
 
 class Morse(Sipher):
@@ -27,7 +26,7 @@ def __init__(self):
         self.__em = ''
         self.__dm = ''
 
-    def encrypt(self, data: AnyStr | PathLike[AnyStr], key=None, copy_to_clipboard: bool = False, store: bool = False,
+    def encrypt(self, data: AnyStr | PathLike[AnyStr], copy_to_clipboard: bool = False, store: bool = False,
                 store_path: Optional[str] = None):
         if isinstance(data, PathLike):
             data = self._get_data_from_file(data)
@@ -36,7 +35,7 @@ def encrypt(self, data: AnyStr | PathLike[AnyStr], key=None, copy_to_clipboard:
         self._copy_store_m(self.__em, self, copy_to_clipboard, store, store_path, encryption=True)
         return self.__em
 
-    def decrypt(self, data: AnyStr | PathLike[AnyStr], key=None, copy_to_clipboard: bool = False, store: bool = False,
+    def decrypt(self, data: AnyStr | PathLike[AnyStr], copy_to_clipboard: bool = False, store: bool = False,
                 store_path: Optional[str] = None):
         if isinstance(data, PathLike):
             data = self._get_data_from_file(data)
diff --git a/sipher/_rsa.py b/sipher/_rsa.py
index 97c5f47..c0412c6 100644
--- a/sipher/_rsa.py
+++ b/sipher/_rsa.py
@@ -65,5 +65,5 @@ def decrypt(self, data: bytes | PathLike[bytes], priv_key: PrivateKey = None, co
         if isinstance(data, PathLike):
             data = self._get_data_from_file(data, mode='rb')
         self.__dm = rsa.decrypt(data, priv_key=priv_key)
-        self._copy_store_m(self.__dm.decode('ascii'), self, copy_to_clipboard, store, store_path, 'wb', decryption=True)
+        self._copy_store_m(self.__dm, self, copy_to_clipboard, store, store_path, 'wb', decryption=True)
         return self.__dm.decode('ascii')
diff --git a/sipher/_sipher.py b/sipher/_sipher.py
index 0f00ce3..0495e19 100644
--- a/sipher/_sipher.py
+++ b/sipher/_sipher.py
@@ -3,7 +3,7 @@
 import os
 import abc
 from srutil import util
-from typing import AnyStr, Optional
+from typing import AnyStr
 
 from . import sipherutil as su
 
@@ -32,11 +32,9 @@ def _copy_store_m(m, alg, copy: bool = False, store: bool = False, store_path=No
                 print("{} message stored in '{}'".format(msg, path.__str__()).strip())
 
     @abc.abstractmethod
-    def encrypt(self, data: AnyStr | os.PathLike[AnyStr], key=None, copy_to_clipboard: bool = False,
-                store: bool = False, store_path: Optional[str] = None) -> AnyStr:
+    def encrypt(self, data: AnyStr | os.PathLike[AnyStr], **kwargs) -> AnyStr:
         pass
 
     @abc.abstractmethod
-    def decrypt(self, data: AnyStr | os.PathLike[AnyStr], key=None, copy_to_clipboard: bool = False,
-                store: bool = False, store_path: Optional[str] = None) -> AnyStr:
+    def decrypt(self, data: AnyStr | os.PathLike[AnyStr], **kwargs) -> AnyStr:
         pass
diff --git a/sipher/sipherutil.py b/sipher/sipherutil.py
index cb815c4..8cd455d 100644
--- a/sipher/sipherutil.py
+++ b/sipher/sipherutil.py
@@ -33,7 +33,7 @@ def retrieve(file_name: str, path: str, file_format: str = None, mode: str = 'r'
         path = os.getcwd()
     if not file_format:
         file_format = ''
-    path += "/{}.{}".format(file_name, file_format)
+    path += "/{}.{}".format(file_name, file_format).rstrip('.')
     file = Path(path)
     with open(file, mode) as f:
         to_return = f.read()