# \[ANN\] SEAL.jl: Fully homomorphic encryption with the BFV and CKKS schemes
**URL:** https://discourse.julialang.org/t/ann-seal-jl-fully-homomorphic-encryption-with-the-bfv-and-ckks-schemes/42210
**Category:** Package Announcements
**Created:** [June 28, 2020, 10:17pm UTC](https://discourse.julialang.org/t/ann-seal-jl-fully-homomorphic-encryption-with-the-bfv-and-ckks-schemes/42210 "2020-06-28T22:17:55Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@sloede](https://discourse.julialang.org/u/sloede)
#### Post date: [June 28, 2020, 10:17pm UTC](https://discourse.julialang.org/t/ann-seal-jl-fully-homomorphic-encryption-with-the-bfv-and-ckks-schemes/42210/1 "2020-06-28T22:17:55Z")
[SEAL.jl](https://github.com/JuliaCrypto/SEAL.jl) is a Julia package that wraps the [SEAL](https://github.com/microsoft/SEAL) library for homomorphic encryption. Homomorphic encryption allows to perform numerical operations directly on _encrypted_ data without having to decrypt the data first, process it, and then re-encrypt the result.
The package supports the Brakerski/Fan-Vercauteren ([BFV](https://eprint.iacr.org/2012/144.pdf)) scheme for exact integer arithmetic and the Cheon-Kim-Kim-Song ([CKKS](https://eprint.iacr.org/2016/421.pdf), also known as HEAAN in literature) scheme for approximate arithmetic with real and complex numbers. Our goal is to expose the homomorphic encryption capabilitites of SEAL in a (mostly) intuitive and Julian way.
Currently, SEAL.jl supports all operations that are used in the examples 1 through 5 of the [SEAL library](https://github.com/microsoft/SEAL/tree/master/native/examples). This includes
- encoding/decoding of raw data
- encryption/decryption
- basic arithmetic operation: addition, multiplication
- rotation
- relinearization and rescaling
- modulus switching
for both the BFV and CKKS schemes.
While most relevant functionality of the SEAL library is already supported in SEAL.jl, there are a few areas where more work is needed, and where community contributions are especially welcome:
- Add missing API implementations
- Add the remaining two examples `6_serialization` and `7_performance`
- Document all examples
- Complete missing docstrings
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### Author:  [@oschulz](https://discourse.julialang.org/u/oschulz)
#### Post date: [June 28, 2020, 10:44pm UTC](https://discourse.julialang.org/t/ann-seal-jl-fully-homomorphic-encryption-with-the-bfv-and-ckks-schemes/42210/2 "2020-06-28T22:44:15Z")
But will it work with Flux? 🙂
Maybe too much to hope for, but it just would be _so_ awesome - generic code couldn’t get much more generic than that …
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### Author:  [@simeonschaub](https://discourse.julialang.org/u/simeonschaub)
#### Post date: [June 28, 2020, 11:27pm UTC](https://discourse.julialang.org/t/ann-seal-jl-fully-homomorphic-encryption-with-the-bfv-and-ckks-schemes/42210/3 "2020-06-28T23:27:18Z")
[https://github.com/JuliaCrypto/ToyFHE.jl/blob/master/examples/encrypted\_mnist/infer.jl](https://github.com/JuliaCrypto/ToyFHE.jl/blob/master/examples/encrypted_mnist/infer.jl) actually already uses Flux. Because Flux is so flexible and can basically integrate with any julia code, this soiuldn’t really be difficult for SEAL.jl.
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### Author:  [@sloede](https://discourse.julialang.org/u/sloede)
#### Post date: [June 29, 2020, 7:09am UTC](https://discourse.julialang.org/t/ann-seal-jl-fully-homomorphic-encryption-with-the-bfv-and-ckks-schemes/42210/4 "2020-06-29T07:09:56Z")
As you can see, everything in SEAL.jl is still mighty fresh, and I haven’t tried using it with Flux yet (but as @simeonschaub pointed out, I also don’t see a reason why it wouldn’t work).
However, one of the plans for the future is to make SEAL.jl more user-friendly by hiding some of the implementation details behind a Julian interface. We would still keep the one-to-one correspondence to the SEAL C++ library intact for full flexibility, but add a convenience layer on top of it to allow writing expressions like `cipher3 = cipher1 * cipher2`. Furthermore, there is already an idea floating around to introduce something like a base package for fully homomorphic encryption that exposes multiple HE backends (such as ToyFHE.jl and SEAL.jl) through a common interface. Ideas, discussions & contributions welcome!
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### Author:  [@oschulz](https://discourse.julialang.org/u/oschulz)
#### Post date: [June 29, 2020, 10:22am UTC](https://discourse.julialang.org/t/ann-seal-jl-fully-homomorphic-encryption-with-the-bfv-and-ckks-schemes/42210/5 "2020-06-29T10:22:23Z")
This is what makes Julia (and the community) so amazing!