Công cụ ký điện tử is a Chrome extension developed by nguyenthanglong1991 that offers a range of useful features for digital signatures and encryption/decryption. With this extension, users can easily sign documents, including PDFs, and authenticate themselves on web platforms. The extension acts as a bridge between websites and the user's digital signature software, allowing seamless transfer of data between the two.

One of the key functionalities of Công cụ ký điện tử is its ability to facilitate the signing of contracts and invoices digitally. Users can simply upload the document to the digital signature software and sign it electronically. The signed document is then automatically sent back to the website through the extension, ensuring a smooth and efficient workflow.

In addition to document signing, Công cụ ký điện tử also offers RSA encryption/decryption capabilities. This feature allows users to securely encrypt and decrypt their data using the RSA algorithm. With this functionality, users can protect their sensitive information and communicate securely over the web.

Overall, Công cụ ký điện tử is a valuable tool for anyone who requires digital signatures and encryption/decryption capabilities. Its seamless integration with web platforms and user-friendly interface make it a convenient choice for individuals and businesses alike.