diff --git a/README.md b/README.md
index 102139a..cc06a8b 100644
--- a/README.md
+++ b/README.md
@@ -6,8 +6,6 @@ Miscellaneous scripts that don't need their own repo.
 - `segafs/makesegafs.py`: Create an `app`/`opt`/`pack` (same thing) from an unencrypted
 disk image.
     - Dependencies: `pip install construct PyCryptodome`
-    - You will need to find the BootID key/IV and the HMAC key yourself if you want to
-    make fake apps for whatever reason. Or just don't.
 
 ## Patchers
 - `patchers/b2spatch.mjs`: Convert from BemaniPatcher to Spice2x JSON
diff --git a/segafs/makesegafs.py b/segafs/makesegafs.py
index 08c70f4..debdd90 100644
--- a/segafs/makesegafs.py
+++ b/segafs/makesegafs.py
@@ -63,12 +63,9 @@ BOOTID = {
 
 # ---- Keys
 # The BootID (app/opt/pack header) encryption key and IV.
-BTKEY = bytes.fromhex("")
-BTIV = bytes.fromhex("")
-
-# The HMAC key that ensures the app/opt/pack created is authentic.
-SIGKEY = bytes.fromhex("")
-
+BTKEY = bytes.fromhex("09ca5efd30c9aaef3804d0a7e3fa7120")
+BTIV = bytes.fromhex("b155c22c2e7f0491fa7f0fdc217aff90")
+SIGKEY = bytes.fromhex("e1bdcb2d5e9ed3b5de234364dfa4d126849edff769fc6c28fba5f43bc482bd7479d676afce8188e1d3a6852f4ebce45cde46bd15e8ee5fe84d197f945a54518f")
 HEADER_META_PUBKEY = RSA.import_key("""-----BEGIN PUBLIC KEY-----
 MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsRMLnJuczNpfoqPpHQ3o
 5XNkjKXO6P3ToV/45Az5dNaHVL7uEu9vPI7a2KYFQnNYgD3UUHFahfTcljzLOkcH
@@ -140,8 +137,8 @@ BOOTID["block_count"] = ceil(filesize / BOOTID["block_size"]) + 8
 header_meta = struct.pack("<Q", time.time()) + os.path.abspath(INPUT_FILE).encode("utf-8")
 header_meta += secrets.token_bytes(BOOTID["block_size"] - len(header_meta))
 header_meta = PKCS1_OAEP.new(HEADER_META_PUBKEY).encrypt(header_meta)
-bullshit_crc32 = zlib.crc32(header_meta)
-block_crc32s = [0, bullshit_crc32, bullshit_crc32, bullshit_crc32, bullshit_crc32, bullshit_crc32, bullshit_crc32, bullshit_crc32]
+header_meta_crc32 = zlib.crc32(header_meta)
+block_crc32s = [0, header_meta_crc32, header_meta_crc32, header_meta_crc32, header_meta_crc32, header_meta_crc32, header_meta_crc32, header_meta_crc32]
 
 with open(INPUT_FILE, "rb") as fin, open(OUTPUT_FILE, "w+b") as fout:
     # Write the bootID.