diff --git a/ChangeLog.txt b/ChangeLog.txt
index 3a9bcdc1..e7cc57b9 100644
--- a/ChangeLog.txt
+++ b/ChangeLog.txt
@@ -19,6 +19,7 @@
 - Added:
     * Check for upgrade packages using the option --check
     * MAKEFLAGS config to specify the number of jobs
+    * Support GPG verification
 
 - Bugfixes:
     * Double view message when update repositories
diff --git a/configs/slpkg.toml b/configs/slpkg.toml
index 42136680..57a18ccf 100644
--- a/configs/slpkg.toml
+++ b/configs/slpkg.toml
@@ -1,6 +1,6 @@
 # This is the general configuration file of slpkg:
 # /etc/slpkg/slpkg.toml
-# Updated: 11/02/2024, Version: 5.0.0
+# Updated: 20/03/2024, Version: 5.0.0
 
 [CONFIGS]
 
@@ -21,6 +21,10 @@ COLORS = true
 # Specify the number of jobs to run concurrently. Default is '-j4'.
 MAKEFLAGS = "-j4"
 
+# Set for GPG verification. Default is 'false'.
+# If you set true, you should update the repositories for GPG-KEY import.
+GPG_VERIFICATION = false
+
 # Dialog is a program that will let you present a variety of questions or
 # display messages using dialog boxes from a shell script.
 # Default is true. [true/false]
@@ -109,9 +113,6 @@ LFTP_GET_OPTIONS = "-c get -e"
 # Lftp mirror options are used to synchronize with the SBo and Ponce repositories
 # or for the local repositories.
 LFTP_MIRROR_OPTIONS = "-c mirror --parallel=100 --only-newer --delete"
-# Addition extra option for lftp command to exclude some not useful files
-# from SBo and ponce repositories.
-LFTP_EXCLUDE = "-X SLACKBUILDS.TXT.gz -X CHECKSUMS.md5.asc -X 'TAGS.txt*' -X '*.tar.gz*'"
 
 # Python urllib3 settings used for checking between two changelog files.
 # Timeouts allow you to control how long (in seconds) requests are allowed
diff --git a/slpkg/configs.py b/slpkg/configs.py
index dea0c93f..ea190519 100644
--- a/slpkg/configs.py
+++ b/slpkg/configs.py
@@ -35,13 +35,13 @@ class Configs:
     removepkg: str = 'removepkg'
     colors: bool = True
     makeflags: str = '-j4'
+    gpg_verification: bool = False
     dialog: bool = True
     downloader: str = 'wget'
     wget_options: str = '--c -q --progress=bar:force:noscroll --show-progress'
     curl_options: str = ''
     lftp_get_options: str = '-c get -e'
-    lftp_mirror_options: str = '-c mirror --parallel=100 --only-newer'
-    lftp_exclude: str = "-X SLACKBUILDS.TXT.gz -X CHECKSUMS.md5.asc -X 'TAGS.txt*' -X '*.tar.gz*'"
+    lftp_mirror_options: str = '-c mirror --parallel=100 --only-newer --delete'
     silent_mode: bool = True
     ascii_characters: bool = True
     ask_question: bool = True
@@ -79,13 +79,13 @@ class Configs:
             removepkg: str = config['REMOVEPKG']
             colors: bool = config['COLORS']
             makeflags: str = config['MAKEFLAGS']
+            gpg_verification: bool = config['GPG_VERIFICATION']
             dialog: str = config['DIALOG']
             downloader: str = config['DOWNLOADER']
             wget_options: str = config['WGET_OPTIONS']
             curl_options: str = config['CURL_OPTIONS']
             lftp_get_options: str = config['LFTP_GET_OPTIONS']
             lftp_mirror_options: str = config['LFTP_MIRROR_OPTIONS']
-            lftp_exclude: str = config['LFTP_EXCLUDE']
             silent_mode: bool = config['SILENT_MODE']
             ascii_characters: bool = config['ASCII_CHARACTERS']
             file_list_suffix: str = config['FILE_LIST_SUFFIX']
diff --git a/slpkg/gpg_verify.py b/slpkg/gpg_verify.py
new file mode 100644
index 00000000..63915d7d
--- /dev/null
+++ b/slpkg/gpg_verify.py
@@ -0,0 +1,40 @@
+#!/usr/bin/python3
+# -*- coding: utf-8 -*-
+
+import subprocess
+
+from slpkg.configs import Configs
+from slpkg.views.asciibox import AsciiBox
+from slpkg.views.views import View
+
+
+class GPGVerify(Configs):
+
+    def __init__(self):
+        super(Configs, self).__init__()
+        self.ascii = AsciiBox()
+        self.view = View()
+
+    def verify(self, asc_files: list) -> None:
+        if self.gpg_verification:
+            verify_message: str = '\rVerify files with GPG ... '
+            gpg_command: str = 'gpg --verify'
+            print(verify_message, end='')
+
+            exit_code: int = 0
+            for i, file in enumerate(asc_files):
+                process = subprocess.Popen(f'{gpg_command} {file}', shell=True, stdout=subprocess.PIPE,
+                                           stderr=subprocess.STDOUT, text=True)
+
+                process.wait()
+
+                if process.returncode != 0:
+                    exit_code: int = process.returncode
+                    if i == 0:
+                        print(f'{self.bred}FAILED!{self.endc}')
+                    print(f"{'':>2}Error {process.returncode}: file '{file.name}' not found.")
+
+            if exit_code == 0:
+                print(f'{self.yellow}{self.ascii.done}{self.endc}')
+            elif exit_code != 0 and self.dialog:
+                self.view.question()
diff --git a/slpkg/install_data.py b/slpkg/install_data.py
index 5ed4cc05..4865d7d2 100644
--- a/slpkg/install_data.py
+++ b/slpkg/install_data.py
@@ -9,6 +9,7 @@ from slpkg.configs import Configs
 from slpkg.utilities import Utilities
 from slpkg.views.asciibox import AsciiBox
 from slpkg.repositories import Repositories
+from slpkg.multi_process import MultiProcess
 
 
 class InstallData(Configs):
@@ -18,6 +19,13 @@ class InstallData(Configs):
         self.utils = Utilities()
         self.repos = Repositories()
         self.ascii = AsciiBox()
+        self.multi_process = MultiProcess()
+
+    def _import_GPG_KEY(self, mirror: str, gpg_key='GPG-KEY') -> None:
+        if self.gpg_verification:
+            gpg_command: str = 'gpg --quiet --fetch-key'
+            GPG_KEY: str = f'{mirror}{gpg_key}'
+            self.multi_process.process(f'{gpg_command} {GPG_KEY}')
 
     def write_last_update(self, changelog_file: Path, repo: str) -> None:
         """ Reads the first date of the changelog file."""
@@ -46,8 +54,11 @@ class InstallData(Configs):
         Returns:
             None.
         """
-        print(f"\nUpdating the database for '{self.cyan}{self.repos.sbo_repo_name}{self.endc}'... ",
+        print(f"Updating the database for '{self.cyan}{self.repos.sbo_repo_name}{self.endc}'... ",
               end='', flush=True)
+
+        self._import_GPG_KEY(mirror='https://www.slackbuilds.org/')
+
         data: dict = {}
         cache: list = []
         sbo_tags: list = [
@@ -122,7 +133,7 @@ class InstallData(Configs):
         Returns:
             None.
         """
-        print(f"\nUpdating the database for '{self.cyan}{self.repos.ponce_repo_name}{self.endc}'... ",
+        print(f"Updating the database for '{self.cyan}{self.repos.ponce_repo_name}{self.endc}'... ",
               end='', flush=True)
         data: dict = {}
         cache: list = []
@@ -202,6 +213,12 @@ class InstallData(Configs):
         print(f"\nUpdating the database for '{self.cyan}{self.repos.slack_repo_name}{self.endc}'... ",
               end='', flush=True)
 
+        mirror: str = self.repos.slack_repo_mirror[0]
+        if self.repos.slack_repo_local[0].startswith('file'):
+            mirror: str = self.repos.slack_repo_local[0]
+
+        self._import_GPG_KEY(mirror=mirror)
+
         data: dict = {}
         checksums_dict: dict = {}
         build: str = ''
@@ -220,10 +237,6 @@ class InstallData(Configs):
         packages_txt: list = self.utils.read_text_file(path_packages)
         checksums_md5: list = self.utils.read_text_file(path_checksums)
 
-        mirror: str = self.repos.slack_repo_mirror[0]
-        if self.repos.slack_repo_local[0].startswith('file'):
-            mirror: str = self.repos.slack_repo_local[0]
-
         for line in checksums_md5:
             line = line.strip()
 
@@ -297,6 +310,12 @@ class InstallData(Configs):
         print(f"\nUpdating the database for '{self.cyan}{self.repos.slack_extra_repo_name}{self.endc}'... ",
               end='', flush=True)
 
+        mirror: str = self.repos.slack_extra_repo_mirror[0]
+        if self.repos.slack_extra_repo_local[0].startswith('file'):
+            mirror: str = self.repos.slack_extra_repo_local[0]
+
+        self._import_GPG_KEY(mirror=mirror)
+
         checksums_dict: dict = {}
         data: dict = {}
         build: str = ''
@@ -315,10 +334,6 @@ class InstallData(Configs):
         packages_txt: list = self.utils.read_text_file(path_packages)
         checksums_md5: list = self.utils.read_text_file(path_checksums)
 
-        mirror: str = self.repos.slack_extra_repo_mirror[0]
-        if self.repos.slack_extra_repo_local[0].startswith('file'):
-            mirror: str = self.repos.slack_extra_repo_local[0]
-
         for line in checksums_md5:
             line = line.strip()
 
@@ -392,6 +407,12 @@ class InstallData(Configs):
         print(f"\nUpdating the database for '{self.cyan}{self.repos.slack_patches_repo_name}{self.endc}'... ",
               end='', flush=True)
 
+        mirror: str = self.repos.slack_patches_repo_mirror[0]
+        if self.repos.slack_patches_repo_local[0].startswith('file'):
+            mirror: str = self.repos.slack_patches_repo_local[0]
+
+        self._import_GPG_KEY(mirror=mirror)
+
         checksums_dict: dict = {}
         data: dict = {}
         build: str = ''
@@ -410,10 +431,6 @@ class InstallData(Configs):
         packages_txt: list = self.utils.read_text_file(path_packages)
         checksums_md5: list = self.utils.read_text_file(path_checksums)
 
-        mirror: str = self.repos.slack_patches_repo_mirror[0]
-        if self.repos.slack_patches_repo_local[0].startswith('file'):
-            mirror: str = self.repos.slack_patches_repo_local[0]
-
         for line in checksums_md5:
             line = line.strip()
 
@@ -487,6 +504,12 @@ class InstallData(Configs):
         print(f"\nUpdating the database for '{self.cyan}{self.repos.alien_repo_name}{self.endc}'... ",
               end='', flush=True)
 
+        mirror: str = ''.join(self.repos.alien_repo_mirror)
+        if self.repos.alien_repo_local[0].startswith('file'):
+            mirror: str = ''.join(self.repos.alien_repo_local)
+
+        self._import_GPG_KEY(mirror=mirror)
+
         checksums_dict: dict = {}
         data: dict = {}
         build: str = ''
@@ -504,10 +527,6 @@ class InstallData(Configs):
         packages_txt: list = self.utils.read_text_file(path_packages)
         checksums_md5: list = self.utils.read_text_file(path_checksums)
 
-        mirror: str = ''.join(self.repos.alien_repo_mirror)
-        if self.repos.alien_repo_local[0].startswith('file'):
-            mirror: str = ''.join(self.repos.alien_repo_local)
-
         for line in checksums_md5:
             line = line.strip()
 
@@ -587,6 +606,12 @@ class InstallData(Configs):
         print(f"\nUpdating the database for '{self.cyan}{self.repos.multilib_repo_name}{self.endc}'... ",
               end='', flush=True)
 
+        mirror: str = ''.join(self.repos.multilib_repo_mirror)
+        if self.repos.multilib_repo_local[0].startswith('file'):
+            mirror: str = ''.join(self.repos.multilib_repo_local)
+
+        self._import_GPG_KEY(mirror=mirror)
+
         checksums_dict: dict = {}
         data: dict = {}
         build: str = ''
@@ -604,10 +629,6 @@ class InstallData(Configs):
         packages_txt: list = self.utils.read_text_file(path_packages)
         checksums_md5: list = self.utils.read_text_file(path_checksums)
 
-        mirror: str = ''.join(self.repos.multilib_repo_mirror)
-        if self.repos.multilib_repo_local[0].startswith('file'):
-            mirror: str = ''.join(self.repos.multilib_repo_local)
-
         for line in checksums_md5:
             line = line.strip()
 
@@ -682,6 +703,12 @@ class InstallData(Configs):
         print(f"\nUpdating the database for '{self.cyan}{self.repos.restricted_repo_name}{self.endc}'... ",
               end='', flush=True)
 
+        mirror: str = ''.join(self.repos.restricted_repo_mirror)
+        if self.repos.restricted_repo_local[0].startswith('file'):
+            mirror: str = ''.join(self.repos.restricted_repo_local)
+
+        self._import_GPG_KEY(mirror=mirror)
+
         checksums_dict: dict = {}
         data: dict = {}
         build: str = ''
@@ -699,10 +726,6 @@ class InstallData(Configs):
         packages_txt: list = self.utils.read_text_file(path_packages)
         checksums_md5: list = self.utils.read_text_file(path_checksums)
 
-        mirror: str = ''.join(self.repos.restricted_repo_mirror)
-        if self.repos.restricted_repo_local[0].startswith('file'):
-            mirror: str = ''.join(self.repos.restricted_repo_local)
-
         for line in checksums_md5:
             line = line.strip()
 
@@ -777,6 +800,12 @@ class InstallData(Configs):
         print(f"\nUpdating the database for '{self.cyan}{self.repos.gnome_repo_name}{self.endc}'... ",
               end='', flush=True)
 
+        mirror: str = self.repos.gnome_repo_mirror[0]
+        if self.repos.gnome_repo_local[0].startswith('file'):
+            mirror: str = self.repos.gnome_repo_local[0]
+
+        self._import_GPG_KEY(mirror=mirror)
+
         checksums_dict: dict = {}
         data: dict = {}
         build: str = ''
@@ -795,10 +824,6 @@ class InstallData(Configs):
         packages_txt: list = self.utils.read_text_file(path_packages)
         checksums_md5: list = self.utils.read_text_file(path_checksums)
 
-        mirror: str = self.repos.gnome_repo_mirror[0]
-        if self.repos.gnome_repo_local[0].startswith('file'):
-            mirror: str = self.repos.gnome_repo_local[0]
-
         for line in checksums_md5:
             line = line.strip()
 
@@ -873,6 +898,12 @@ class InstallData(Configs):
         print(f"\nUpdating the database for '{self.cyan}{self.repos.msb_repo_name}{self.endc}'... ",
               end='', flush=True)
 
+        mirror: str = ''.join(self.repos.msb_repo_mirror)
+        if self.repos.msb_repo_local[0].startswith('file'):
+            mirror: str = ''.join(self.repos.msb_repo_local)
+
+        self._import_GPG_KEY(mirror=mirror)
+
         checksums_dict: dict = {}
         data: dict = {}
         build: str = ''
@@ -890,10 +921,6 @@ class InstallData(Configs):
         packages_txt: list = self.utils.read_text_file(path_packages)
         checksums_md5: list = self.utils.read_text_file(path_checksums)
 
-        mirror: str = ''.join(self.repos.msb_repo_mirror)
-        if self.repos.msb_repo_local[0].startswith('file'):
-            mirror: str = ''.join(self.repos.msb_repo_local)
-
         for line in checksums_md5:
             line = line.strip()
 
@@ -968,6 +995,12 @@ class InstallData(Configs):
         print(f"\nUpdating the database for '{self.cyan}{self.repos.csb_repo_name}{self.endc}'... ",
               end='', flush=True)
 
+        mirror: str = ''.join(self.repos.csb_repo_mirror)
+        if self.repos.csb_repo_local[0].startswith('file'):
+            mirror: str = ''.join(self.repos.csb_repo_local)
+
+        self._import_GPG_KEY(mirror=mirror)
+
         checksums_dict: dict = {}
         data: dict = {}
         build: str = ''
@@ -985,10 +1018,6 @@ class InstallData(Configs):
         packages_txt: list = self.utils.read_text_file(path_packages)
         checksums_md5: list = self.utils.read_text_file(path_checksums)
 
-        mirror: str = ''.join(self.repos.csb_repo_mirror)
-        if self.repos.csb_repo_local[0].startswith('file'):
-            mirror: str = ''.join(self.repos.csb_repo_local)
-
         for line in checksums_md5:
             line = line.strip()
 
@@ -1063,6 +1092,12 @@ class InstallData(Configs):
         print(f"\nUpdating the database for '{self.cyan}{self.repos.conraid_repo_name}{self.endc}'... ",
               end='', flush=True)
 
+        mirror: str = self.repos.conraid_repo_mirror[0]
+        if self.repos.conraid_repo_local[0].startswith('file'):
+            mirror: str = self.repos.conraid_repo_local[0]
+
+        self._import_GPG_KEY(mirror=mirror)
+
         checksums_dict: dict = {}
         data: dict = {}
         build: str = ''
@@ -1081,10 +1116,6 @@ class InstallData(Configs):
         packages_txt: list = self.utils.read_text_file(path_packages)
         checksums_md5: list = self.utils.read_text_file(path_checksums)
 
-        mirror: str = self.repos.conraid_repo_mirror[0]
-        if self.repos.conraid_repo_local[0].startswith('file'):
-            mirror: str = self.repos.conraid_repo_local[0]
-
         for line in checksums_md5:
             line = line.strip()
 
@@ -1159,6 +1190,12 @@ class InstallData(Configs):
         print(f"\nUpdating the database for '{self.cyan}{self.repos.slackdce_repo_name}{self.endc}'... ",
               end='', flush=True)
 
+        mirror: str = self.repos.slackdce_repo_mirror[0]
+        if self.repos.slackdce_repo_local[0].startswith('file'):
+            mirror: str = self.repos.slackdce_repo_local[0]
+
+        self._import_GPG_KEY(mirror=mirror)
+
         checksums_dict: dict = {}
         data: dict = {}
         build: str = ''
@@ -1176,10 +1213,6 @@ class InstallData(Configs):
         packages_txt: list = self.utils.read_text_file(path_packages)
         checksums_md5: list = self.utils.read_text_file(path_checksums)
 
-        mirror: str = self.repos.slackdce_repo_mirror[0]
-        if self.repos.slackdce_repo_local[0].startswith('file'):
-            mirror: str = self.repos.slackdce_repo_local[0]
-
         for line in checksums_md5:
             line = line.strip()
 
@@ -1259,6 +1292,12 @@ class InstallData(Configs):
         print(f"\nUpdating the database for '{self.cyan}{self.repos.slackonly_repo_name}{self.endc}'... ",
               end='', flush=True)
 
+        mirror: str = self.repos.slackonly_repo_mirror[0]
+        if self.repos.slackonly_repo_local[0].startswith('file'):
+            mirror: str = self.repos.slackonly_repo_local[0]
+
+        self._import_GPG_KEY(mirror=mirror)
+
         checksums_dict: dict = {}
         data: dict = {}
         build: str = ''
@@ -1276,10 +1315,6 @@ class InstallData(Configs):
         packages_txt: list = self.utils.read_text_file(path_packages)
         checksums_md5: list = self.utils.read_text_file(path_checksums)
 
-        mirror: str = self.repos.slackonly_repo_mirror[0]
-        if self.repos.slackonly_repo_local[0].startswith('file'):
-            mirror: str = self.repos.slackonly_repo_local[0]
-
         for line in checksums_md5:
             line = line.strip()
 
@@ -1359,6 +1394,12 @@ class InstallData(Configs):
         print(f"\nUpdating the database for '{self.cyan}{self.repos.salixos_repo_name}{self.endc}'... ",
               end='', flush=True)
 
+        mirror: str = self.repos.salixos_repo_mirror[0]
+        if self.repos.salixos_repo_local[0].startswith('file'):
+            mirror: str = self.repos.salixos_repo_local[0]
+
+        self._import_GPG_KEY(mirror=mirror)
+
         checksums_dict: dict = {}
         data: dict = {}
         build: str = ''
@@ -1376,10 +1417,6 @@ class InstallData(Configs):
         packages_txt: list = self.utils.read_text_file(path_packages)
         checksums_md5: list = self.utils.read_text_file(path_checksums)
 
-        mirror: str = self.repos.salixos_repo_mirror[0]
-        if self.repos.salixos_repo_local[0].startswith('file'):
-            mirror: str = self.repos.salixos_repo_local[0]
-
         for line in checksums_md5:
             line = line.strip()
 
@@ -1467,6 +1504,12 @@ class InstallData(Configs):
         print(f"\nUpdating the database for '{self.cyan}{self.repos.salixos_extra_repo_name}{self.endc}'... ",
               end='', flush=True)
 
+        mirror: str = self.repos.salixos_extra_repo_mirror[0]
+        if self.repos.salixos_extra_repo_local[0].startswith('file'):
+            mirror: str = self.repos.salixos_extra_repo_local[0]
+
+        self._import_GPG_KEY(mirror=mirror)
+
         checksums_dict: dict = {}
         data: dict = {}
         build: str = ''
@@ -1484,10 +1527,6 @@ class InstallData(Configs):
         packages_txt: list = self.utils.read_text_file(path_packages)
         checksums_md5: list = self.utils.read_text_file(path_checksums)
 
-        mirror: str = self.repos.salixos_extra_repo_mirror[0]
-        if self.repos.salixos_extra_repo_local[0].startswith('file'):
-            mirror: str = self.repos.salixos_extra_repo_local[0]
-
         for line in checksums_md5:
             line = line.strip()
 
@@ -1575,6 +1614,12 @@ class InstallData(Configs):
         print(f"\nUpdating the database for '{self.cyan}{self.repos.salixos_patches_repo_name}{self.endc}'... ",
               end='', flush=True)
 
+        mirror: str = self.repos.salixos_patches_repo_mirror[0]
+        if self.repos.salixos_patches_repo_local[0].startswith('file'):
+            mirror: str = self.repos.salixos_patches_repo_local[0]
+
+        self._import_GPG_KEY(mirror=mirror)
+
         checksums_dict: dict = {}
         data: dict = {}
         build: str = ''
@@ -1594,10 +1639,6 @@ class InstallData(Configs):
         packages_txt: list = self.utils.read_text_file(path_packages)
         checksums_md5: list = self.utils.read_text_file(path_checksums)
 
-        mirror: str = self.repos.salixos_patches_repo_mirror[0]
-        if self.repos.salixos_patches_repo_local[0].startswith('file'):
-            mirror: str = self.repos.salixos_patches_repo_local[0]
-
         for line in checksums_md5:
             line = line.strip()
 
@@ -1686,6 +1727,12 @@ class InstallData(Configs):
         print(f"\nUpdating the database for '{self.cyan}{self.repos.slackel_repo_name}{self.endc}'... ",
               end='', flush=True)
 
+        mirror: str = self.repos.slackel_repo_mirror[0]
+        if self.repos.slackel_repo_local[0].startswith('file'):
+            mirror: str = self.repos.slackel_repo_local[0]
+
+        self._import_GPG_KEY(mirror=mirror)
+
         checksums_dict: dict = {}
         data: dict = {}
         build: str = ''
@@ -1703,10 +1750,6 @@ class InstallData(Configs):
         packages_txt: list = self.utils.read_text_file(path_packages)
         checksums_md5: list = self.utils.read_text_file(path_checksums)
 
-        mirror: str = self.repos.slackel_repo_mirror[0]
-        if self.repos.slackel_repo_local[0].startswith('file'):
-            mirror: str = self.repos.slackel_repo_local[0]
-
         for line in checksums_md5:
             line = line.strip()
 
@@ -1794,6 +1837,12 @@ class InstallData(Configs):
         print(f"\nUpdating the database for '{self.cyan}{self.repos.slint_repo_name}{self.endc}'... ",
               end='', flush=True)
 
+        mirror: str = self.repos.slint_repo_mirror[0]
+        if self.repos.slint_repo_local[0].startswith('file'):
+            mirror: str = self.repos.slint_repo_local[0]
+
+        self._import_GPG_KEY(mirror=mirror)
+
         checksums_dict: dict = {}
         data: dict = {}
         build: str = ''
@@ -1811,10 +1860,6 @@ class InstallData(Configs):
         packages_txt: list = self.utils.read_text_file(path_packages)
         checksums_md5: list = self.utils.read_text_file(path_checksums)
 
-        mirror: str = self.repos.slint_repo_mirror[0]
-        if self.repos.slint_repo_local[0].startswith('file'):
-            mirror: str = self.repos.slint_repo_local[0]
-
         for line in checksums_md5:
             line = line.strip()
 
@@ -1902,6 +1947,12 @@ class InstallData(Configs):
         print(f"\nUpdating the database for '{self.cyan}{self.repos.pprkut_repo_name}{self.endc}'... ",
               end='', flush=True)
 
+        mirror: str = ''.join(self.repos.pprkut_repo_mirror)
+        if self.repos.pprkut_repo_local[0].startswith('file'):
+            mirror: str = ''.join(self.repos.pprkut_repo_local)
+
+        self._import_GPG_KEY(mirror=mirror)
+
         checksums_dict: dict = {}
         data: dict = {}
         build: str = ''
@@ -1919,10 +1970,6 @@ class InstallData(Configs):
         packages_txt: list = self.utils.read_text_file(path_packages)
         checksums_md5: list = self.utils.read_text_file(path_checksums)
 
-        mirror: str = ''.join(self.repos.pprkut_repo_mirror)
-        if self.repos.pprkut_repo_local[0].startswith('file'):
-            mirror: str = ''.join(self.repos.pprkut_repo_local)
-
         for line in checksums_md5:
             line = line.strip()
 
diff --git a/slpkg/multi_process.py b/slpkg/multi_process.py
index b83a5014..5e8ff8c7 100644
--- a/slpkg/multi_process.py
+++ b/slpkg/multi_process.py
@@ -14,7 +14,7 @@ from slpkg.progress_bar import ProgressBar
 
 class MultiProcess(Configs):
 
-    def __init__(self, flags: list):
+    def __init__(self, flags=None):
         super(Configs, self).__init__()
 
         self.utils = Utilities()
@@ -26,8 +26,9 @@ class MultiProcess(Configs):
         self.head_message: str = f'Timestamp: {self.timestamp}'
         self.bottom_message: str = 'EOF - End of log file'
 
-        self.option_for_silent: bool = self.utils.is_option(
-            ('-n', '--silent'), flags)
+        if flags is not None:
+            self.option_for_silent: bool = self.utils.is_option(
+                ('-n', '--silent'), flags)
 
     def run(self, command: str, filename: str, progress_message: str) -> None:
         """ Starting a multiprocessing process.
diff --git a/slpkg/sbos/sbo_generate.py b/slpkg/sbos/sbo_generate.py
index 265a8790..fa021af7 100644
--- a/slpkg/sbos/sbo_generate.py
+++ b/slpkg/sbos/sbo_generate.py
@@ -5,6 +5,7 @@ from pathlib import Path
 from slpkg.configs import Configs
 from slpkg.views.asciibox import AsciiBox
 
+
 class SBoGenerate(Configs):
     """ Generating the SLACKBUILDS.TXT file. """
 
diff --git a/slpkg/sbos/slackbuild.py b/slpkg/sbos/slackbuild.py
index 9484b368..cb753c15 100644
--- a/slpkg/sbos/slackbuild.py
+++ b/slpkg/sbos/slackbuild.py
@@ -14,6 +14,7 @@ from slpkg.configs import Configs
 from slpkg.views.views import View
 from slpkg.utilities import Utilities
 from slpkg.dialog_box import DialogBox
+from slpkg.gpg_verify import GPGVerify
 from slpkg.downloader import Downloader
 from slpkg.error_messages import Errors
 from slpkg.views.asciibox import AsciiBox
@@ -42,6 +43,7 @@ class Slackbuilds(Configs):
         self.view = View(flags, repository, data)
         self.check_md5 = Md5sum(flags)
         self.download = Downloader(flags)
+        self.gpg = GPGVerify()
 
         self.sources: dict = {}
         self.install_order: list = []
@@ -65,6 +67,7 @@ class Slackbuilds(Configs):
 
     def execute(self) -> None:
         self.creating_dependencies_list()
+        self.gpg_verifying()
         self.choose_package_dependencies()
         self.add_dependencies_to_install_order()
         self.clean_the_main_slackbuilds()
@@ -95,6 +98,16 @@ class Slackbuilds(Configs):
     def add_dependencies_to_install_order(self) -> None:
         self.install_order.extend(self.dependencies)
 
+    def gpg_verifying(self):
+        if self.repository == self.repos.sbo_repo_name:
+            asc_files: list = []
+            for file in self.slackbuilds + self.dependencies:
+                location: str = self.data[file]['location']
+                asc_file: Path = Path(self.repos.repositories_path, self.repos.sbo_repo_name,
+                                      location, f'{file}.tar.gz.asca')
+                asc_files.append(Path(asc_file))
+            self.gpg.verify(asc_files)
+
     def clean_the_main_slackbuilds(self) -> None:
         for dep in self.dependencies:
             if dep in self.slackbuilds:
diff --git a/slpkg/update_repositories.py b/slpkg/update_repositories.py
index 757d0e1a..95bbe958 100644
--- a/slpkg/update_repositories.py
+++ b/slpkg/update_repositories.py
@@ -579,7 +579,7 @@ class UpdateRepositories(Configs):
         self.utils.remove_file_if_exists(self.repos.ponce_repo_path, self.repos.ponce_repo_slackbuilds)
         self.utils.remove_file_if_exists(self.repos.ponce_repo_path, self.repos.ponce_repo_changelog)
 
-        lftp_command: str = (f'lftp {self.lftp_mirror_options} {self.lftp_exclude} '
+        lftp_command: str = (f'lftp {self.lftp_mirror_options} '
                              f'{self.repos.ponce_repo_mirror[0]} {self.repos.ponce_repo_path}')
 
         self.multi_process.process(lftp_command)
@@ -595,7 +595,7 @@ class UpdateRepositories(Configs):
         self.utils.remove_file_if_exists(self.repos.sbo_repo_path, self.repos.sbo_repo_slackbuilds)
         self.utils.remove_file_if_exists(self.repos.sbo_repo_path, self.repos.sbo_repo_changelog)
 
-        lftp_command: str = (f'lftp {self.lftp_mirror_options} {self.lftp_exclude} '
+        lftp_command: str = (f'lftp {self.lftp_mirror_options} '
                              f'{self.repos.sbo_repo_mirror[0]} {self.repos.sbo_repo_path}')
 
         self.multi_process.process(lftp_command)