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What is Light Rider EMS?
Light Rider EMS is a cloud service for cryptographic-grade entropy from independent quantum and classical sources. Every response includes the random bytes and a signed receipt.
Cloud endpoint: https://ems.lightriderinc.com
What it provides
- Policy-based access to quantum-verified, high-quality, and low-latency entropy.
- Health testing and conditioning before entropy reaches a serving pool.
- Signed receipts that record source, quality, extractor, and health metadata.
- Multi-source extraction for applications that need independent contributors.
- REST and WebSocket APIs through one cloud endpoint.
How a request works
- Collectors read enabled entropy sources.
- Health and quality checks reject failing input.
- Extractors condition accepted input.
- Conditioned entropy enters a policy pool.
- EMS serves the requested bytes and signs a receipt.
EMS fails closed. It does not silently replace a required quality tier with weaker entropy.
Use the official SDK
The official Python package is lightrider. EMS classes are available from the package root and lightrider.entropy.
python
from lightrider import EntropyClient, Policy
with EntropyClient("https://ems.lightriderinc.com", api_key="lr_...") as client:
client.fetch_verifier()
response = client.get_bytes(32, policy=Policy.QUANTUM_VERIFIED)
print(response.bytes_.hex())Continue with the Quickstart or review the API reference.

