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# Add a new VNDK APEX
In this document we add a new VNDK APEX for version 30. When you follow this doc with different versions,
change "30" to what you're adding. (eg. 31)
1. Add a new definition in `Android.bp`
```
apex_vndk {
name: "com.android.vndk.v30",
manifest: "apex_manifest.v30.json",
key: "com.android.vndk.v30.key",
certificate: ":com.android.vndk.v30.certificate",
vndk_version: "30",
system_ext_specific: true,
file_contexts: ":com.android.vndk-file_contexts",
}
apex_key {
name: "com.android.vndk.v30.key",
public_key: "com.android.vndk.v30.pubkey",
private_key: "com.android.vndk.v30.pem",
}
android_app_certificate {
name: "com.android.vndk.v30.certificate",
certificate: "com.android.vndk.v30",
}
```
2. Add `apex_manifest.v30.json`
```
{
"name": "com.android.vndk.v30",
"version": 1
}
```
3. Add keys/ceritificate
```
openssl genrsa -out com.android.vndk.v30.pem 4096
avbtool extract_public_key --key com.android.vndk.v30.pem --output com.android.vndk.v30.pubkey
openssl req -x509 -newkey rsa:4096 -nodes -days 999999 -keyout key.pem -out com.android.vndk.v30.x509.pem
# Enter following info via the interactive prompts
# Country Name: US
# State: California
# Locality Name: Mountain View
# Organization Name: Android
# Organization Unit Name: Android
# Common Name: com.android.vndk
# Email address: android@android.com
openssl pkcs8 -topk8 -inform PEM -outform DER -in key.pem -out com.android.vndk.v30.pk8 -nocrypt
rm key.pem
```
4. Verify
```
m com.android.vndk.v30
```
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