diff --git a/.DS_Store b/.DS_Store
index bd66951..502f1af 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/unit04_public_key/.DS_Store b/unit04_public_key/.DS_Store
index fb873be..68023e6 100644
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diff --git a/unit04_public_key/lab/gpg/1.asc b/unit04_public_key/lab/gpg/1.asc
new file mode 100644
index 0000000..970b7f1
--- /dev/null
+++ b/unit04_public_key/lab/gpg/1.asc
@@ -0,0 +1,20 @@
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diff --git a/unit04_public_key/lab/gpg/hello.txt.asc b/unit04_public_key/lab/gpg/hello.txt.asc
index 5013764..ed7e1fd 100644
--- a/unit04_public_key/lab/gpg/hello.txt.asc
+++ b/unit04_public_key/lab/gpg/hello.txt.asc
@@ -1,14 +1,12 @@
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diff --git a/unit04_public_key/lab/gpg/myfile.asc b/unit04_public_key/lab/gpg/myfile.asc
new file mode 100644
index 0000000..354da9c
--- /dev/null
+++ b/unit04_public_key/lab/gpg/myfile.asc
@@ -0,0 +1,20 @@
+----BEGIN PGP MESSAGE-----
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+ 
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diff --git a/unit04_public_key/lab/gpg/myfile.txt b/unit04_public_key/lab/gpg/myfile.txt
index e965047..e69de29 100644
--- a/unit04_public_key/lab/gpg/myfile.txt
+++ b/unit04_public_key/lab/gpg/myfile.txt
@@ -1 +0,0 @@
-Hello
diff --git a/unit04_public_key/lab/gpg/myfile1.txt b/unit04_public_key/lab/gpg/myfile1.txt
new file mode 100644
index 0000000..e965047
--- /dev/null
+++ b/unit04_public_key/lab/gpg/myfile1.txt
@@ -0,0 +1 @@
+Hello
diff --git a/unit04_public_key/lab/gpg/priv.pem b/unit04_public_key/lab/gpg/priv.pem
new file mode 100644
index 0000000..1369b7a
--- /dev/null
+++ b/unit04_public_key/lab/gpg/priv.pem
@@ -0,0 +1,8 @@
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+-----END EC PARAMETERS-----
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diff --git a/unit04_public_key/lab/gpg/private.pem b/unit04_public_key/lab/gpg/private.pem
new file mode 100644
index 0000000..4f6d4f6
--- /dev/null
+++ b/unit04_public_key/lab/gpg/private.pem
@@ -0,0 +1,9 @@
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new file mode 100644
index 0000000..600eb7a
--- /dev/null
+++ b/unit04_public_key/lab/gpg/public.pem
@@ -0,0 +1,4 @@
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new file mode 100644
index 0000000..ea0f83a
--- /dev/null
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