Tongsuo-Project/Tongsuo

Health v2 · maintenance only

Flags: prerelease_only

Adoption not part of the score

1521 stars · 261 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Tongsuo (铜锁) is an open-source cryptographic library providing modern cryptographic primitives and secure communication protocols, including Chinese commercial cryptography algorithms (SM2/SM3/SM4/ZUC), TLS 1.3, the TLCP dual-certificate protocol, post-quantum algorithms, zero-knowledge proofs, and homomorphic encryption. It is an OpenSSL-derived C library certified for Chinese commercial cryptography compliance, usable across Linux, macOS, Windows, Android, and iOS.

Use cases

• add SM2/SM3/SM4 Chinese national cryptography support to my application
• serve TLS with dual-certificate GM (TLCP) protocol
• enable RFC 8998 TLS 1.3 with Chinese cipher suites
• meet Chinese commercial cryptography compliance requirements (密评/等保)
• use post-quantum algorithms like ML-KEM and ML-DSA
• implement zero-knowledge proofs with Bulletproofs
• use homomorphic encryption like Paillier or EC-ElGamal
• replace OpenSSL with a China-compliant crypto library

When to choose

• you need Chinese national cryptography (国密) algorithm or TLCP protocol support
• you must satisfy Chinese commercial cryptography compliance and certification requirements
• you want an OpenSSL-compatible API with modern additions like ZKP, homomorphic encryption, and post-quantum crypto
• you need TLS 1.3 with RFC 8998 Chinese cipher suites or QUIC API support

When to avoid

• you only need standard international cryptography with no Chinese compliance needs — OpenSSL, BoringSSL, or rustls may be simpler
• you need a minimal footprint for embedded/IoT devices — consider the companion tongsuo-mini instead
• your stack requires language bindings or ecosystems not yet built around Tongsuo

Facets

library · maturity active

cryptography security networking sdk security privacy developer-tools cross-platform windows cross-platform c chinese-commercial-cryptography sm2 sm3 sm4 tlcp gm-tls tls quic post-quantum zero-knowledge-proof homomorphic-encryption openssl-fork compliance linux macos android ios

Member repositories

For agents

markdown · JSON · MCP: product_card(name="Tongsuo-Project/Tongsuo")