Cryptographic javascript-functions for ethereum and tutorials to use them with web3js and solidity

tutorial encryption cipher ethereum dapp smart-contracts blockchain truffle transaction signature solidity sign web3 eth publickey web3js privatekey ethereum-identity sign-data signtransaction

• Updated Jan 31, 2026
• JavaScript

China E-Port Data Signature — Free, open-source solution for CEBXxxMessage & Customs 179 data signing. Plug-and-play: supports JSON push, sign failure email alerts, U-Key health check auto-restart. No middleware. 中国电子口岸 CEB 报文与 179 数据加签开源解决方案,支持 JSON 推送、加签失败邮件提醒、U-key 健康自动重启,开箱即用,无需中间件。

java customs ceb sign-data china-e-port-data-signature ceb-message ceb311message ceb621message

• Updated Jan 8, 2026
• Java

This repository showcases the use case of image classification on SIGN dataset with 6 classes. The dataset contains signs crated by hands.

cnn image-classification convolutional-neural-networks flask-api andrew-ng assignment-1 assignments compute-vision deeplearning-ai sign-data

• Updated Apr 11, 2019
• Jupyter Notebook