diff --git a/unit04_public_key/.DS_Store b/unit04_public_key/.DS_Store
index f1cbd77..96d0304 100644
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diff --git a/unit04_public_key/lab/gpg/1.asc b/unit04_public_key/lab/gpg/1.asc
index 3561041..e301329 100644
--- a/unit04_public_key/lab/gpg/1.asc
+++ b/unit04_public_key/lab/gpg/1.asc
@@ -1,20 +1,42 @@
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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 4020023..de2b6be 100644
--- a/unit04_public_key/lab/gpg/hello.txt.asc
+++ b/unit04_public_key/lab/gpg/hello.txt.asc
@@ -1,16 +1,18 @@
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diff --git a/unit04_public_key/lab/gpg/key.asc b/unit04_public_key/lab/gpg/key.asc
new file mode 100644
index 0000000..f4a9034
--- /dev/null
+++ b/unit04_public_key/lab/gpg/key.asc
@@ -0,0 +1,53 @@
+-----BEGIN PGP PUBLIC KEY BLOCK-----
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+
diff --git a/unit04_public_key/lab/gpg/myfile.txt b/unit04_public_key/lab/gpg/myfile.txt
index e69de29..04e1be0 100644
--- a/unit04_public_key/lab/gpg/myfile.txt
+++ b/unit04_public_key/lab/gpg/myfile.txt
@@ -0,0 +1,3 @@
+Hi Bill!
+
+This is a top secret message sent by Tim Kassner.
diff --git a/unit04_public_key/lab/new_lab04.docx b/unit04_public_key/lab/new_lab04.docx
index 6fca8d6..f4eff23 100644
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diff --git a/unit04_public_key/lab/new_lab04.pdf b/unit04_public_key/lab/new_lab04.pdf
index dbb1983..d95d707 100644
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diff --git a/unit04_public_key/lab/~$w_lab04.docx b/unit04_public_key/lab/~$w_lab04.docx
new file mode 100644
index 0000000..827a495
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