Crie seus tokens de autenticação com o AScrypt.

Related tags

Authentication ascrypt-token
Overview

AScrypt tokens

O AScrypt é uma forma de gerar tokens de autenticação para sua aplicação de forma rápida e segura. Todos os tokens que foram, mesmo que minimamente alterados, são inválidados imediatamente.

Índice

Exemplos

Um token gerado utilizando o AScrypt tem a seguinte estrutura:

© AScrypt

66d03bda7ac0465c1291ce91e1f7e5f9.eyJuYW1lIjogIkphZWRzb24iLCAiQGVtaXRlZF9pbl9hc2NyeXB0IjogIjIwMjEtMTEtMjYgMjA6Mzg6MzguNDc0MTYyIn0=

O token é longo, mas vamos dividir ele através do ponto localizado no token. A primeira parte é um hash md5 do conteúdo + a chave usada para a gerar o token. Veja o exemplo abaixo:

© AScrypt

# transformando o dicionário em string
content_user = json.dumps({'name': 'Jaedson'})
secret_key = 'ogIkphZWRzb24iLCAiQGVta'

token_part1 = str(content_user + secret_key).encode()

hash_md5 = haslib.md5(token_part1).hexdigest()
# > 66d03bda7ac0465c1291ce91e1f7e5f9

Com isso, na hora de validar o token, nós geramos um hash do content e da chave secreta e comparamos o hash que veio no token e o hash que foi gerado na hora da validação.

Agora vamos para a segunda parte do token, que é nada mais que o conteúdo dele codificado em base64. Um token AScrypt impede que o conteúdo seja alterado, garantindo a integridade da informação, porém, qualquer pessoa pode ver o conteúdo dele, mas não alterá-lo.

Tentando invalidar

É praticamente impossível alterar esses tokens, mesmo que você altere o conteúdo do token e gere um novo hash, na hora de realizar a validação, o conteúdo será somado com a chave secreta, que resulta em um hash totalmente diferente do que o usuário mal intencionado gerou.

Chaves secretas

A classe AScrypt() possui um método que não precisa ser instanciado para uso, o generate_token() permite que token aleatórios sejam gerados para uso na codificação ou decodificação de tokens. Você pode especificar o tamanho da chave, sendo o padrão 32. Quanto maior a chave, mais seguro o token é.

Licença

O AScrypt está licenciado por MIT.

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Releases(v1.0.0)

  • v1.0.0(Nov 27, 2021)

    AScrypt v1.0.0

    Crie seus tokens de forma rápida e segura, tendo a certeza de que nenhum deles foi alterado!

    Suporte

    • [x] Gerar tokens com conteúdo em JSON
    • [x] Gerar chaves secretas seguras

    Proximas versões

    • [ ] Tempo de expiração para o token
    • [ ] Chaves públicas e privadas para tokens
    • [ ] Melhorias na segurança
    • [ ] Uso de outros tipos de hash para novos tokens

    © AScrypt Make the internet a secure local.

    Source code(tar.gz)
    Source code(zip)
Owner
Jaedson Silva
Software Developer with focus in Security of Information. #python #flask #software #security
Jaedson Silva
GitHub
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