> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/pt-br/hacking-wifi/wpa-wpa2-psk-network-attacks/precomputed-attacks/computation-speed-techniques-rainbow-tables.md).
# Técnicas de Aceleração Computacional - Tabelas Rainbow
Notas sobre o uso de tabelas rainbow para acelerar consultas de hashes de senhas.
Tabelas arco-íris aceleram a recuperação de senhas com valores de hash pré-computados.
Elas transferem o trabalho da fase de recuperação para a fase de preparação. A tabela armazena cadeias de valores pré-computados.
### Abordagem padrão
Para cada candidato de senha:
* Aplique o hash a ele.
* Compare-o com o hash-alvo.
* Verifique se eles correspondem.
### Abordagem com tabela arco-íris
Use um dicionário de cadeias de hash pré-computadas. Isso evita recalcular cada hash durante a busca.
A desvantagem é o espaço de armazenamento. Consultas mais rápidas exigem uma tabela pré-computada maior.
---
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