microsoft/SEAL

Health v2 · maintenance only

Adoption not part of the score

4016 stars · 773 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Microsoft SEAL is an open-source homomorphic encryption library written in modern C++, with a .NET wrapper, supporting BFV/BGV and CKKS schemes. It allows computation on encrypted data without decryption and runs across many platforms including mobile and WebAssembly.

Use cases

• perform computations on encrypted data without decrypting it
• build privacy-preserving machine learning inference
• encrypt numbers and do arithmetic on ciphertexts with CKKS
• evaluate encrypted queries on sensitive databases
• experiment with fully homomorphic encryption schemes like BFV and CKKS

When to choose

• you need a mature, well-documented, MIT-licensed FHE library
• you need cross-platform support including .NET, mobile, and WebAssembly
• you want both exact (BFV/BGV) and approximate (CKKS) homomorphic encryption

When to avoid

• you need simple conventional encryption like AES or TLS
• your workload cannot tolerate the large performance overhead of homomorphic encryption
• you need a pure managed-language implementation without native dependencies

Facets

library · maturity active

cryptography security security privacy developer-tools cpp dotnet cross-platform windows wasm homomorphic-encryption ckks bfv privacy-preserving-computation fhe linux macos android ios

Member repositories

For agents

markdown · JSON · MCP: product_card(name="microsoft/SEAL")