crypto-go

Teste Aprendendo Conceitos de Blockchain

Made from scratch, generic propose, production ready blockchain for uses like office files, criptocurrency Build using TDD

Test Coverage

Features

• [v] Server
  • Creating blocks
• Block
  • Block's hash
  • Test
• Transaction
  • Transaction list Hash
  • Test
• Key
• Transport => tcp, udp,
  • Local transport layer
• Crypto Keypairs and signature
• Block Signing
• Blockchain struct
• Storage (memory storage)
• Transaction Encoding/Decoding
• Block Encoding/Decoding

Todos

Improvements and fixes that can be implemented

• Add a database or a better storage method to store transactions and block data

Types

• Hash

type Hash [32]uint8
type Address [20]uint8

Mistakes to remember

On the struct Transaction on Signing the transaction the object was missing the value of the transaction's Signature, returnning a null value

func TestSignTransaction(t *testing.T) {
	privateKey := crypto.GeneratePrivateKey()

	tx := &Transaction{
		Data: []byte("foo bar baz"),
	}

	assert.Nil(t, tx.Sign(privateKey))
	assert.NotNil(t, tx.Signature) // FAIL

}

Beacuse of the method signatue (tx T) insted of (tx *T), the object was missing the reference

old :

func (tx Transaction) Sign(privKey crypto.PrivateKey) error {

fixed:

func (tx *Transaction) Sign(privKey crypto.PrivateKey) error {

Instalação

Para instalar as dependências do projeto, execute:

go mod tidy

Para executar o projeto

make run

Como Contribuir

1. Faça um fork do projeto
2. Crie uma nova branch (git checkout -b feature/nome-da-feature)
3. Faça commit das suas alterações (git commit -am 'Adiciona nova feature')
4. Faça push para a branch (git push origin feature/nome-da-feature)
5. Abra um Pull Request

Licença

Este projeto está licenciado sob a Licença MIT - veja o arquivo LICENSE para mais detalhes.