diff --git a/unit04_public_key/lab/gpg/hello.txt.asc b/unit04_public_key/lab/gpg/hello.txt.asc
index 682e6d7..ec418c1 100644
--- a/unit04_public_key/lab/gpg/hello.txt.asc
+++ b/unit04_public_key/lab/gpg/hello.txt.asc
@@ -1,15 +1,18 @@
 -----BEGIN PGP MESSAGE-----
 
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 -----END PGP MESSAGE-----
diff --git a/unit04_public_key/lab/gpg/myfile.asc b/unit04_public_key/lab/gpg/myfile.asc
new file mode 100644
index 0000000..f60debd
--- /dev/null
+++ b/unit04_public_key/lab/gpg/myfile.asc
@@ -0,0 +1,14 @@
+-----BEGIN PGP MESSAGE-----
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+-----END PGP MESSAGE-----
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/mypub.key b/unit04_public_key/lab/gpg/mypub.key
index 61a59f1..f0c0e1a 100644
--- a/unit04_public_key/lab/gpg/mypub.key
+++ b/unit04_public_key/lab/gpg/mypub.key
@@ -1,52 +1,30 @@
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 -----END PGP PUBLIC KEY BLOCK-----
diff --git a/unit04_public_key/lab/new_lab04.docx b/unit04_public_key/lab/new_lab04.docx
index 09a22ce..6fca8d6 100644
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diff --git a/unit04_public_key/lab/new_lab04.pdf b/unit04_public_key/lab/new_lab04.pdf
index 16215be..dbb1983 100644
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