A C++ SDK for licensing and secure downloads

Add two files to your project, VaultixClient.h and VaultixClient.cpp, and your app can sign users in, check what they own and fetch what they paid for.

What it does

Sign in with a license key or username and password, auto-login, session refresh
Check products and subscriptions, read product status, news and variables
Download files and folders to disk, to memory or as a stream
Decrypt end-to-end encrypted downloads with your app’s SDK key
Verify a local file against the stored hash

Hardened by default

Checks the signature on every response from Vaultix
Certificate pinning, OCSP checks and a minimum TLS version
Signed requests with fresh nonces
Approved-build checks: only your released executables are accepted

Requirements

C++ with libcurl for HTTP and OpenSSL for cryptography, on Windows and Linux. Anything else can use the REST API.

Vaultix::VaultixClient client("https://vaultix.cc/api");
client.SetApiKey("ap_your_app_key");
client.SetContentKey("vxk_your_sdk_key");

if (client.AuthenticateWithKey(licenseKey)) {
    std::vector<uint8_t> build = client.DownloadFileToMemory(productId, "game.dll");
}

Questions

Which platforms are supported?: Windows and Linux. The SDK needs libcurl and OpenSSL.
Is there an API for other languages?: Yes. Everything the SDK does goes through the documented REST API.

C++ client SDK · Quick start · REST API

Vaultix · Features · Pricing · Documentation · Changelog · llms.txt