日:5 11 月, 2019

同態加密 (Part 2:Paillier cryptosystem)

在目前的實務上,最常使用的同態加密是 Paillier cryptosystem。是一種非對稱式加密:會有一組公鑰用來加密,一組私鑰用來解密。並且在這情況使用的是 RSA 模組。更具體的說就是公鑰有兩個參數決定

同態加密

同態加密 (Part 1:簡介)

在這篇短文,我們簡介同態加密( homomorphic encryption) 的基本概念,以及應該具有的密碼學性質。
之後會在系列文章給予兩個例子 (asymmetric algorithm):Paillier 和 C.L. homomorphic encryption。並且在例子 Paillier 解釋為何滿足同態加密的特性。在 C.L. homomorphic encryption 我們點出在應用上為何它比 Paillier 更優越之處。

A Hierarchical Threshold Signature

A Hierarchical Threshold Signature

Key management plays a significant role in blockchain technology regarding digital assets protection. Practically speaking, losing private keys leads to great losses. Improper key management and poor system implementation may increase the risk of asset being transferred maliciously. Take an extreme case that happened before as an example, a principal died suddenly and no one was able to recover keys so that the whole asset was frozen. To solve these problems, experts therefore propose threshold cryptography to reduce the risk of key management.

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MaiCoin集團 2019-10月報

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