capsule

Service for Storing And Interacting with Secrets (particularly Keys or MPC Shares) Off Blockchain

The goal of this library is to allow developers of OpenMined to simulate participating in a network where others have access to secret information that developers do not. In the trivial case, Capsule can generate a private Encryption key and never reveal it to the developer. See the notebooks folder for tutorials on how to use the library.

Step 1: Open Terminal and Run:

sh build_and_run.sh

Step 2: Open Terminal and Run:

jupyter notebook

Step 3: Select Notebook

In the notebooks folder, you'll find that there are several example notebooks showing how to use the Capsule. You'll find that the general setup is a server (which you started in Step 1) which holds onto secret information. From the Jupyter notebook you can interact with the server as if you were interacting with individuals on a live global network.

Current Research

NuCypherKMS: decentralized key management system

• https://arxiv.org/pdf/1707.06140.pdf

ZoE: Zcash over Ethereum cross chain zk-snarks

• https://z.cash/blog/zcash-eth.html
• https://github.com/zcash/babyzoe
• https://github.com/zcash/babyzoe/blob/master/talks/2016-07-27-IC3---SNARKs-for-Ethereum.pdf
• https://blog.ethereum.org/2016/12/05/zksnarks-in-a-nutshell/
• https://media.consensys.net/introduction-to-zksnarks-with-examples-3283b554fc3b

Hawk: blockchain model of cryptography and privacy-preserving smart contracts

• https://eprint.iacr.org/2015/675.pdf

Fast and Secure Linear Regression and Biometric Authentication with Security Update

• https://eprint.iacr.org/2015/692.pdf

A Comparison of the Homomorphic Encryption Schemes:

• https://eprint.iacr.org/2014/062.pdf

Multi-bit homomorphic encryption based on learning with errors over rings

• https://eprint.iacr.org/2013/138.pdf