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Tongo Documentation

Welcome to the official Tongo documentation. Tongo is a confidential payment system for ERC20 tokens on Starknet, providing privacy-preserving transactions while maintaining auditability and compliance features.

What is Tongo?

Tongo wraps any ERC20 token with ElGamal encryption, enabling private transfers while maintaining full auditability. Built on zero-knowledge proofs and homomorphic encryption over the Stark curve, Tongo enables users to transact with hidden amounts while preserving the ability to verify transaction validity.

Key Features:

  • No Trusted Setup: Built entirely on elliptic curve cryptography
  • Hidden Amounts: All transfer amounts are encrypted
  • Native Starknet Integration: Leverages Starknet's elliptic curve operations
  • Flexible Compliance: Global auditor support and selective disclosure

Documentation Structure

Protocol Documentation

Learn about the underlying protocol, cryptography, and how Tongo works:

  • Introduction to confidential payments
  • Encryption system and ZK proofs
  • Transfer protocol
  • Auditing and compliance
  • Cairo contracts

SDK Documentation

Get started building with the Tongo TypeScript SDK:

  • Installation and quick start
  • Core concepts and architecture
  • Step-by-step guides
  • Complete API reference
  • Real-world examples

Getting Started

If you're a developer looking to integrate Tongo into your application, start with the SDK Quick Start.

If you want to understand the protocol and cryptography, begin with the Protocol Introduction.