> ## Documentation Index
> Fetch the complete documentation index at: https://docs.futurex.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Before you start

> Checklist of environment prerequisites (hardware, OS, access, network) before configuring Android APKSigner with HSM.

Verify your environment meets these requirements.

## Supported hardware

* Vectera Plus, `7.2.x.x` or later.

## Supported operating systems

* Windows 10 or later
* Linux

## Required access

* An account on the Vectera Plus with administrator permissions to create application partitions, identities, TLS PKI, and update system settings.
* Local administrator/root privileges on the computer where Android APKSigner is installed.

## Network and firewall

* Allow outbound TCP port **9100**(default Excrypt port) from the computer running Android APKSigner to the Vectera Plus, specified by FQDN (for example, `hsm.example.com`) or CIDR (for example, `10.0.0.0/24`).

<Warning>
  TLS inspection or SSL proxies can break mutual TLS handshakes. Exempt the Vectera Plus FQDN(s) from inspection. Configure the Vectera Plus with a FQDN so the exemption applies.
</Warning>

## Other

* OpenSSL
* Oracle Java 11, 17, or 21

<Warning>
  To ensure proper compatibility between Java SunPKCS11 and the Futurex PKCS11 module, you must use Oracle Java instead of OpenJDK. We support Oracle Java 11, 17, and 21.
</Warning>