diff --git a/keys/o18.pem b/keys/o18.pem
new file mode 100644
index 0000000..02f4997
--- /dev/null
+++ b/keys/o18.pem
@@ -0,0 +1,9 @@
+-----BEGIN PUBLIC KEY-----
+MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAs/HyMayJG0kzUA9XKbxi
+rE4vOqVZKtlVJj8bzQAUtoxxguQDz0T1t1HmbtDKLfhSlcwNM/rpilA5nIepArGe
+czNzYFTYYBV9HsSI1VuSrEfCILGtq0RbIMHCnvkt2RCwn1QWNS24k5dr0tI7kVmD
+b6DKmLNmmKUGsG5EdVvkTw4jB6g4bOk8Ji6LFq6MY7gS+90f3BdxDavKukEoQ8HI
+6xNpZAHrCe+KDAOnLbkrILBzpXpJLD2aujJSYwDCr8vxNCVizENM8H0B1NLxDlef
+fvgh3P5ch6uVKFw2hwcZC3TRkfur1i1na4tyRCjPqS3Fg0p0kZrfjMUkLkFywT0k
+/QIDAQAB
+-----END PUBLIC KEY-----
diff --git a/keys/o20.pem b/keys/o20.pem
new file mode 100644
index 0000000..9e62b95
--- /dev/null
+++ b/keys/o20.pem
@@ -0,0 +1,9 @@
+-----BEGIN PUBLIC KEY-----
+MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwbLByTYxeXUTG/+8nndC
+foFPXU75yEi2LXTKrpa6vIO6AKFaE/0cvJz4ZJ6gEomf6LiQvjne9f+GLZgmzHs3
+ndwl7JUdp5/TNnx8l1iITY8gAN4Gc46APT8RaR4hLTxY25r2MnxxM8S20U4g09Ql
+8fjaZcYh8GXZDrmBTtpMfzDRsoKIF1wGyvWvLRYD097VEwgKjmP+HUUyxL3Pmnf1
+H2R9o7wSzVJhRTui0eABklFT5SWH+GiaxjM7eEpO7vztJ0l9fxReNR9xnYjJV/YO
+CWWLidBvFjSXgmpH+NPJS8g5XvvQHxgLf6UJiLMTM+BtN8YQNWTvn38GPGQCvOcw
+LQIDAQAB
+-----END PUBLIC KEY-----
diff --git a/keys/o22.pem b/keys/o22.pem
new file mode 100644
index 0000000..77f3a40
--- /dev/null
+++ b/keys/o22.pem
@@ -0,0 +1,9 @@
+-----BEGIN PUBLIC KEY-----
+MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAs+tQtULZxECErZGR9mfy
+f9ieRBkISQ7gOTCKcV6VD0e4ifnAjUR3YLDoZcMyaNfIuUlu7cd18mK6YvKDP9yn
+1LhoUrby8EoqWAM7EltSW0K4TdSIUbn1HDT0WIb+lE1flLTlyuCfE2LWjjh6Y5gN
+JiIRiaI27CZLK+kbBfab2IUXtEJJpsNKwaQ7Is3ZkBJyoOFZu489nL1YDU/nwrVC
+6rUgT0P+15S6ONuc63IY3TLqFPi/7TS3cwaYCoBjutVU2hGv+WdMx9IMVLGzHFMx
+PGulCb2uRQILBzONhibC+wCwVkC5ARqeK433fmG62tapOhMxTPrq9EjIrZPCsjFZ
+3wIDAQAB
+-----END PUBLIC KEY-----