# Silence Laboratories Documentation

> Silence Laboratories is an MPC Threshold Signature SDK company. We build the fastest implementations of DKLS23 (threshold ECDSA) and L22 (threshold EdDSA) protocols.

## Products

### Silent Shard Duo (2/2 threshold)
- Two key shares: phone + cloud
- Consumer wallets (like Zengo)
- SDKs: React Native, Flutter, Kotlin, Swift
- Docs: /duo/general/getting-started/welcome

### Silent Shard Trio (2/3 threshold)
- Three key shares, any 2 can sign
- Custodians, banks, institutional
- SDKs: React Native, Flutter, Kotlin, Swift
- Docs: /trio/general/getting-started/welcome

### Silent Network (t-of-n threshold)
- Cloud KMS for embedded wallets
- No user device required
- SDKs: TypeScript, Rust, Go
- TEE support: Intel SGX, Google Confidential Space
- Docs: /silent-network/general/getting-started/introduction

## Protocols
- ECDSA: DKLS23 (https://eprint.iacr.org/2023/765)
- EdDSA: L22 (https://eprint.iacr.org/2022/374.pdf)
- Open source: https://github.com/silence-laboratories/dkls23-rs
- Core crypto: https://github.com/silence-laboratories/sl-crypto/

## Key Operations
- KeyGen: distributed key generation, private key never assembled
- SignGen: collaborative signing, key remains distributed
- Key Refresh: rotate shares without changing wallet address
- Pre-sign: precompute ECDSA signatures for instant signing (Trio, SN)
- Key Import/Export: convert between EOA and MPC wallet
- Verifiable Backup: encrypted backup with public verifiability (Duo)
- Key Recovery: recover lost mobile share from cloud nodes (Trio)

## Key Pages
- Choose Your Product: /choosing-your-product
- Core Concepts: /core-concepts
- Security Model: /security/security-model
- FAQ: /faq
- Production Checklist: /production-checklist

## Contact
- Email: info@silencelaboratories.com
- Security: security@silencelaboratories.com
- Website: https://silencelaboratories.com