October 2025
Intermediate to advanced
570 pages
16h 46m
Portuguese (Portugal, Brazil)
book
Dominando o Ethereum, 2nd Edition
by Carlo Parisi, Alessandro Mazza, Niccolo Pozzolini, Gavin Wood, Andreas M. Antonopoulos
Content preview from Dominando o Ethereum, 2nd Edition
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Capítulo 4. Criptografia
Este trabalho foi traduzido com recurso a IA. Agradecemos o teu feedback e comentários: translation-feedback@oreilly.com
Uma das tecnologias fundamentais da Ethereum é a criptografia, que é um ramo da matemática usado extensivamente na segurança de computadores. Criptografia significa "escrita secreta" em grego, mas o estudo da criptografia abrange mais do que apenas a escrita secreta, que é chamada de criptografia. A criptografia também pode, por exemplo, ser usada para provar o conhecimento de um segredo sem revelar esse segredo (por exemplo, com uma assinatura digital) ou para provar a autenticidade dos dados (por exemplo, com impressões digitais, também conhecidas como hashes). Esses tipos de provas criptográficas são ferramentas matemáticas essenciais para a operação da plataforma Ethereum (e, de fato, de todos os sistemas de blockchain) e também são amplamente usados nos aplicativos Ethereum.
Observe que, no momento da publicação, nenhuma parte do protocolo Ethereum envolve criptografia; ou seja, todas as comunicações com a plataforma Ethereum e entre nós (incluindo dados de transações) não são criptografadas e podem (necessariamente) ser lidas por qualquer pessoa. Assim, todos podem verificar a exatidão das atualizações de estado e o consenso pode ser alcançado. No futuro, estarão disponíveis ferramentas criptográficas avançadas, como provas de conhecimento zero e criptografia homomórfica, que permitirão que alguns cálculos criptografados sejam registrados ...
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