Microsoft SEAL


Simple Encrypted Arithmetic Library or SEAL is a free and open-source cross platform software library developed by Microsoft Research that implements various forms of homomorphic encryption.

History

Development originally came out of the Cryptonets paper, demonstrating that artificial intelligence algorithms could be run on homomorphically encrypted data.
It is open-source and written in standard C++ without external dependencies and so it can be compiled cross platform. An official.NET wrapper written in C# is available and makes it easier for.NET applications to interact with SEAL.

Features

Algorithms

Microsoft SEAL supports both asymmetric and symmetric encryption algorithms.

Scheme types

Microsoft SEAL comes with two different homomorphic encryption schemes with very different properties:
Data compression can be achieved by building SEAL with Zlib support. By default, data is compressed using the DEFLATE algorithm which achieves significant memory footprint savings when serializing objects such as encryption parameters, ciphertexts, plaintexts, and all available keys: Public, Secret, Relin, and Galois. Compression can always be disabled.

Availability

There are several known ports of SEAL to other languages in active development:

C++