URL: /tang/introduction

---
title: Introduction
description: Encrypt anything in three lines of code.
icon: sparkles
---

Cipher is a developer-first encryption service. Hand it a payload, get back a sealed envelope. Hand the envelope back later — get the payload.

## Why Cipher

<CardGroup cols={2}>
  <Card title="Three lines of code" icon="code">
    No key-management busywork. The SDK does it.
  </Card>
  <Card title="Per-tenant keys" icon="key">
    Strong isolation by default. Multi-tenant ready out of the box.
  </Card>
  <Card title="Forward-secret" icon="shield">
    Compromised key today can't decrypt yesterday's traffic.
  </Card>
  <Card title="Audit trail" icon="file-lines">
    Every encrypt/decrypt is signed and queryable.
  </Card>
</CardGroup>

## What's next

<Steps>
  <Step title="Install the SDK">
    `npm install @example/cipher` and grab a sandbox key.
  </Step>
  <Step title="Encrypt your first payload">
    Three lines. Skip to the [quickstart](/quickstart).
  </Step>
  <Step title="Wire it into prod">
    [Rotate keys](/guides/rotation) on a schedule. Done.
  </Step>
</Steps>