PrivateStamp (Beta version) – PrivateStamp(测试版)区块链毕设代写

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PrivateStamp (Beta version)

Currently, under active development

A private proof-of-existence DApp.

Prove that you’ve had a file (of any type & size) at a certain time without compromising your privacy.

Currently deployed on Rinkeby network

Technologies used:

Solidity, Hardhat, Typescript, Web Crypto API, React, ChakraUI

To interact with the app, you need MetaMask extension installed, and connected to Rinkeby network.

Features:

Secure:

  • Your original file is never transmitted over the network, both encryption & decryption happen locally.

  • Every encryption process generate a different file/hash even if the same file is encrypted with the same password, that’s because a random salt is generated every time.

Decentralized:

  • Relies on Ethereum blockchain to store/retrieve data

Encryption details:

  • PBKDF2: this crypto function is used to derive a strong encryption key from the password supplied by the user, to reduce vulnerabilities of brute-force attacks.

  • AES-GCM 256: this is the algorithm used to encrypt the file

  • Encrypted file contents:

    • “Bytes from 0 to 11” contain the IV.
    • “Bytes from 12 to 27” contain the salt.
    • “Bytes from 28 to the end” contain the encrypted contents of the file.

PrivateStamp(Beta版)

目前,正在积极开发中

一个私有存在证明DApp。

证明您在某个特定时间拥有一个文件(任何类型和大小),而不会损害您的隐私。

目前部署在Rinkeby网络上

使用的技术:

Solidity、Hardhat、Typescript、Web Crypto API、React、ChakraUI

要与应用程序交互,需要安装MetaMask扩展,并连接到Rinkeby网络。

功能:

安全:

  • 您的原始文件从未通过网络传输,加密和解密都在本地进行。
  • 每个加密过程都会生成不同的文件/哈希,即使同一个文件使用相同的密码加密,这是因为每次都会生成一个随机salt。

分散:

加密详细信息:

  • PBKDF2:此加密函数用于从用户提供的密码派生一个强加密密钥,以减少暴力攻击的漏洞。AES-GCM 256:这是用于加密文件的算法,加密文件内容:“0到11的字节”包含IV。“12到27的字节”包含salt“从28到结尾的字节”包含文件的加密内容。
  • “从0到11的字节”包含IV。
  • “从12到27的字节”包含盐。

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https://www.interchains.cc/21660.html

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