diff --git a/service/lib/dinstaller/software/callbacks/signature.rb b/service/lib/dinstaller/software/callbacks/signature.rb
index 02f76261f3..6f2de3d554 100644
--- a/service/lib/dinstaller/software/callbacks/signature.rb
+++ b/service/lib/dinstaller/software/callbacks/signature.rb
@@ -44,6 +44,9 @@ def setup
           Yast::Pkg.CallbackAcceptUnsignedFile(
             Yast::FunRef.new(method(:accept_unsigned_file), "boolean (string, integer)")
           )
+          Yast::Pkg.CallbackImportGpgKey(
+            Yast::FunRef.new(method(:import_gpg_key), "boolean (map <string, any>, integer)")
+          )
         end
 
         # Callback to handle unsigned files
@@ -62,7 +65,7 @@ def accept_unsigned_file(filename, repo_id)
           end
 
           message = format(
-            "%{source} is not digitally signed. The origin and integrity of the file cannot be "\
+            "%{source} is not digitally signed. The origin and integrity of the file cannot be " \
             "verified. Use it anyway?", source: source
           )
 
@@ -75,6 +78,28 @@ def accept_unsigned_file(filename, repo_id)
           end
         end
 
+        # Callback to handle signature verification failures
+        #
+        # @param key [Hash] GPG key data (id, name, fingerprint, etc.)
+        # @param _repo_id [Integer] Repository ID
+        def import_gpg_key(key, _repo_id)
+          fingerprint = key["fingerprint"].scan(/.{4}/).join(" ")
+          message = format(
+            "The key %{id} (%{name}) with fingerprint %{fingerprint} is unknown. " \
+            "Do you want to trust this key?",
+            id: key["id"], name: key["name"], fingerprint: fingerprint
+          )
+
+          question = DInstaller::Question.new(
+            message, options: [:Trust, :Skip], default_option: :Skip
+          )
+
+          ask(question) do |q|
+            logger.info "#{q.text} #{q.answer}"
+            q.answer == :Trust
+          end
+        end
+
       private
 
         # @return [DBus::Clients::QuestionsManager]
diff --git a/service/lib/dinstaller/software/manager.rb b/service/lib/dinstaller/software/manager.rb
index 1bb62c4c56..8503a39ce4 100644
--- a/service/lib/dinstaller/software/manager.rb
+++ b/service/lib/dinstaller/software/manager.rb
@@ -85,6 +85,7 @@ def probe
         Yast::Stage.Set("normal")
 
         start_progress(3)
+        Yast::PackageCallbacks.InitPackageCallbacks(logger)
         progress.step("Initialize target repositories") { initialize_target_repos }
         progress.step("Initialize sources") { add_base_repo }
         progress.step("Making the initial proposal") do
@@ -96,7 +97,6 @@ def probe
       end
 
       def initialize_target_repos
-        Yast::PackageCallbacks.InitPackageCallbacks(logger)
         Yast::Pkg.TargetInitialize("/")
         import_gpg_keys
       end
diff --git a/service/package/rubygem-d-installer.changes b/service/package/rubygem-d-installer.changes
index 4183e68317..85ad8ab625 100644
--- a/service/package/rubygem-d-installer.changes
+++ b/service/package/rubygem-d-installer.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Thu Dec 15 13:15:10 UTC 2022 - Imobach Gonzalez Sosa <igonzalezsosa@suse.com>
+
+- Implement the ImportGpgKey libzypp callback
+  (gh#yast/d-installer#371)
+
 -------------------------------------------------------------------
 Wed Dec 14 22:38:24 UTC 2022 - Imobach Gonzalez Sosa <igonzalezsosa@suse.com>
 
diff --git a/service/test/dinstaller/software/callbacks/signature_test.rb b/service/test/dinstaller/software/callbacks/signature_test.rb
index f680f79a4e..45010f0e7b 100644
--- a/service/test/dinstaller/software/callbacks/signature_test.rb
+++ b/service/test/dinstaller/software/callbacks/signature_test.rb
@@ -71,12 +71,63 @@
       end
     end
 
-    context "when the repo information is not available"
-    it "includes a generic message containing the filename" do
+    context "when the repo information is not available" do
+      before do
+        allow(Yast::Pkg).to receive(:SourceGeneralData).with(1)
+          .and_return(nil)
+      end
+
+      it "includes a generic message containing the filename" do
+        expect(subject).to receive(:ask) do |question|
+          expect(question.text).to include("repomd.xml")
+        end
+        expect(subject.accept_unsigned_file("repomd.xml", 1))
+      end
+    end
+  end
+
+  describe "import_gpg_key" do
+    let(:asked_question) do
+      instance_double(DInstaller::Question, text: "Better safe than sorry", answer: answer)
+    end
+
+    let(:answer) { :Trust }
+
+    let(:key) do
+      {
+        "id"          => "0123456789ABCDEF",
+        "fingerprint" => "2E2EA448C9DDD7A91BC28441AEE969E90F05DB9D",
+        "name"        => "YaST:Head:D-Installer"
+      }
+    end
+
+    before do
+      allow(subject).to receive(:ask).and_yield(asked_question)
+    end
+
+    context "when the user answers :Trust" do
+      let(:answer) { :Trust }
+
+      it "returns true" do
+        expect(subject.import_gpg_key(key, 1)).to eq(true)
+      end
+    end
+
+    context "when the user answers :Skip" do
+      let(:answer) { :Skip }
+
+      it "returns false" do
+        expect(subject.import_gpg_key(key, 1)).to eq(false)
+      end
+    end
+
+    it "includes a message" do
       expect(subject).to receive(:ask) do |question|
-        expect(question.text).to include("repomd.xml")
+        expect(question.text).to include(key["id"])
+        expect(question.text).to include(key["name"])
+        expect(question.text).to include("2E2E A448 C9DD")
       end
-      expect(subject.accept_unsigned_file("repomd.xml", 1))
+      subject.import_gpg_key(key, 1)
     end
   end
 end