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sc-crypto-utils

v1.0.8

Published

Biblioteca TypeScript com utilitários para geração de hash e assinaturas digitalmente.

Readme

sc-crypto-utils

Biblioteca TypeScript para utilitários criptográficos: geração de hashes, chaves, assinatura e criptografia assimétrica.

NPM Version License


✨ Recursos

  • 🔐 Geração de hashes seguros
  • 🧾 Geração e uso de par de chaves públicas/privadas (RSA)
  • 🛡️ Criptografia e descriptografia com chaves públicas (RSA)
  • 🔏 Assinatura e verificação de dados

📦 Instalação

npm install sc-crypto-utils

ou

yarn add sc-crypto-utils

🔧 Uso básico

import { CryptoUtils } from 'sc-crypto-utils';

// Gerar par de chaves
const { publicKey, privateKey } = CryptoUtils.generateKeyPair();

// Geração de hash
const hash = CryptoUtils.generateHash('meu texto');

// Geração de KEK (Key Encryption Key)
const dek = CryptoUtils.generateDEK();
const kek = CryptoUtils.generateKEK(publicKey, dek);

// Assinar e verificar
const signature = CryptoUtils.signData('mensagem', privateKey);
const isValid = CryptoUtils.verifySignature('mensagem', signature, publicKey);

📘 API

generateKeyPair(): { publicKey: string, privateKey: string }

Gera um par de chaves RSA 2048 bits, codificadas em PEM.


generateHash(data: string): string

Gera um hash SHA-256 em base64.


generateDEK(): string

Gera uma chave de criptografia simétrica (DEK) aleatória de 32 bytes, codificada em base64.


generateKEK(publicKey: string, dek: string): string

Criptografa o DEK com a chave pública informada (em formato PEM ou base64 do PEM).


signData(data: string, privateKey: string): string

Assina os dados com uma chave privada RSA. Retorna a assinatura em base64.


verifySignature(data: string, signature: string, publicKey: string): boolean

Verifica se a assinatura corresponde aos dados com base na chave pública.


🧪 Testes

Para rodar os testes com Vitest:

npm test

🛠️ Desenvolvimento

Compilar o projeto:

npm run build

📄 Licença

ISC


🙋‍♂️ Autor

Desenvolvido por Saulo Costa.