DIF Digital signatures

Overview

This project implements digital signature functionality, providing a secure way to verify the authenticity and integrity of digital documents.

Getting Started

To run the project:

git clone firmas-digitales-dif
cd firmas-digitales-dif
docker-compose up -d --build

Then, open your browser and go to http://localhost:3000. You should see the application running.

Techniques Used

This project leverages several mathematical and computational techniques to achieve secure digital signatures:

• Elliptic Curve Cryptography (ECC):
  ECC is used for key generation and digital signature creation. Specifically, the prime256v1 curve (also known as secp256r1) is employed, offering a good balance of security and performance. The cryptoService.js file contains the implementation for generating ECC key pairs.

• SHA-256 Hashing:
  The SHA-256 algorithm is used to generate a cryptographic hash of the document being signed. This hash serves as a unique fingerprint of the document. Any alteration to the document will result in a different hash value. The cryptoService.js file uses SHA-256 for signing and verification.

• Digital Signature Algorithm (ECDSA):
  ECDSA is used to generate the digital signature itself. The signature is created using the private key and the SHA-256 hash of the document.

• Base64 Encoding:
  Base64 encoding is used to represent the digital signature in a text format that can be easily stored and transmitted.

• Prisma:
  Prisma is an ORM (Object-Relational Mapper) that is used to interact with the database. It provides a type-safe way to perform CRUD (Create, Read, Update, Delete) operations on the database.

File Structure

• backend: Contains the backend code, including the API endpoints, database models, and cryptographic functions.
• frontend: Contains the frontend code, including the user interface and logic for interacting with the backend.
• docker-compose.yml: Defines the services, networks, and volumes for the Docker application.
• README.md: This file, providing an overview of the project.

Dependencies

• Node.js
• Docker
• Docker Compose
• Prisma