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age-threshold's Introduction

Threshold encryption for Age

We extend Age with the ability to encrypt towards a group of decryption keys in such a way that multiple keys need to cooperate in order to decrypt.

Installation

Nix

nix profile install github:bbjubjub2494/age-threshold

Cargo

cargo install --git https://github.com/bbjubjub2494/age-threshold

Alternatives

age-plugin-sss

age-threshold's People

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Stargazers

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Watchers

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age-threshold's Issues

Verifiable Secret Sharing

Currently Shamir Secret Sharing is used. There's an attack scenario where one recipient out of two is malicious. There is a legitimate 2-out-of-2 ciphertext C1. If they submit a crafted ciphertext C2 with the same encrypted share, the other recipient might decrypt it and reveal their share for C1, allowing the malicious recipient to decrypt C1. We should use some form of VSS.

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