Vamos falar sobre JWT
Olá!
Aviso
@jesstemporal
jesstemporal.com
JWT
@jesstemporal
jesstemporal.com
"Jot"
JWT
@jesstemporal
jesstemporal.com
JSON Object Signing and Encryption - JOSE
@jesstemporal
jesstemporal.com
RFC 7519
@jesstemporal
jesstemporal.com
Normalmente, uma string padronizada que representa alguma informação
@jesstemporal
jesstemporal.com
JSON Web Token
@jesstemporal
jesstemporal.com
JSON Web Token
@jesstemporal
jesstemporal.com
JSON Web Token
@jesstemporal
jesstemporal.com
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwiZ2l2ZW5fbmFtZSI6Ikplc3NpY2EiLCJmYW1pbHlfbmFtZSI6IlRlbXBvcmFsIiwicHJlZmVycmVkX3VzZXJuYW1lIjoiamVzc3RlbXBvcmFsIiwiaWF0IjoxNTE2MjM5MDIyLCJleHAiOjE1NTIzMDU3MTB9.LmUNPW9fSAqVTGEEFW0yrsD9eooyRv_VPB3r6tCWkRc
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwiZ2l2ZW5fbmFtZSI6Ikplc3NpY2EiLCJmYW1pbHlfbmFtZSI6IlRlbXBvcmFsIiwicHJlZmVycmVkX3VzZXJuYW1lIjoiamVzc3RlbXBvcmFsIiwiaWF0IjoxNTE2MjM5MDIyLCJleHAiOjE1NTIzMDU3MTB9.LmUNPW9fSAqVTGEEFW0yrsD9eooyRv_VPB3r6tCWkRc
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwiZ2l2ZW5fbmFtZSI6Ikplc3NpY2EiLCJmYW1pbHlfbmFtZSI6IlRlbXBvcmFsIiwicHJlZmVycmVkX3VzZXJuYW1lIjoiamVzc3RlbXBvcmFsIiwiaWF0IjoxNTE2MjM5MDIyLCJleHAiOjE1NTIzMDU3MTB9.LmUNPW9fSAqVTGEEFW0yrsD9eooyRv_VPB3r6tCWkRc
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwiZ2l2ZW5fbmFtZSI6Ikplc3NpY2EiLCJmYW1pbHlfbmFtZSI6IlRlbXBvcmFsIiwicHJlZmVycmVkX3VzZXJuYW1lIjoiamVzc3RlbXBvcmFsIiwiaWF0IjoxNTE2MjM5MDIyLCJleHAiOjE1NTIzMDU3MTB9.LmUNPW9fSAqVTGEEFW0yrsD9eooyRv_VPB3r6tCWkRc
{
"alg": "HS256",
"typ": "JWT"
}O Cabeçalho
@jesstemporal
jesstemporal.com
{
"sub": "1234567890",
"given_name": "Jessica",
"family_name": "Temporal",
"preferred_username": "jesstemporal",
"iat": 1516239022,
"exp": 1552305710
}O Corpo
@jesstemporal
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{
"sub": "1234567890",
"iss": "https://jtemporal.com",
"iat": 1516239022,
"exp": 1552305710
}Atributos reservados
@jesstemporal
jesstemporal.com
{
"given_name": "Jessica",
"family_name": "Temporal",
"preferred_username": "jesstemporal"
}Atributos públicos
@jesstemporal
jesstemporal.com
{
"qualquer": "coisa",
"que": "você quiser mesmo"
}Atributos privados
@jesstemporal
jesstemporal.com
Seja minimalista, mantenha apenas dados relevantes
@jesstemporal
jesstemporal.com
Não coloque dados sensíveis no corpo do JWT
@jesstemporal
jesstemporal.com
HMACSHA256(
encodeBase64(header) + "." +
encodeBase64(payload),
"your-256-bit-secret"
)A Assinatura
@jesstemporal
jesstemporal.com
HMACSHA256(
encodeBase64(header) + "." +
encodeBase64(payload),
"nPilVwFjcF0v5NL5YT1xsiwRJCGqM1do"
)A Assinatura
@jesstemporal
jesstemporal.com
Algoritmos Simétricos
🤫
@jesstemporal
jesstemporal.com
Algoritmos Assimétricos
🔑🗝
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jesstemporal.com
JSON Web Key
@jesstemporal
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RFC 7517
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JWK
@jesstemporal
jesstemporal.com
{
"keys": [{
"alg": "RS256",
"kty": "RSA",
"use": "sig",
"n": "uEOPrkjGKxE...YIwS5ZoDQ",
"e": "AQAB",
"kid": "n6OFo...9cl9",
"x5t": "ET...rQA",
"x5c": ["MIIDDTCCAf...OaeyleoS0="]
}]
}Criando um JWT
@jesstemporal
jesstemporal.com
{
"alg": "HS256",
"typ": "JWT"
}Header
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9Header
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9Header
{
"sub": "1234567890",
"given_name": "Jessica",
"family_name": "Temporal",
"preferred_username": "jesstemporal",
"iat": 1516239022,
"exp": 1552305710
}Payload
eyJzdWIiOiIxMjM0NTY3ODkwIiwiZ2l2ZW5fbmFtZSI6Ikplc3NpY2EiLCJmYW1pbHlfbmFtZSI6IlRlbXBvcmFsIiwicHJlZmVycmVkX3VzZXJuYW1lIjoiamVzc3RlbXBvcmFsIiwiaWF0IjoxNTE2MjM5MDIyLCJleHAiOjE1NTIzMDU3MTB9Payload
Header
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9Payload
Signature
Header
HMACSHA256(
encodeBase64(header) + "." +
encodeBase64(payload),
"your-256-bit-secret"
)eyJzdWIiOiIxMjM0NTY3ODkwIiwiZ2l2ZW5fbmFtZSI6Ikplc3NpY2EiLCJmYW1pbHlfbmFtZSI6IlRlbXBvcmFsIiwicHJlZmVycmVkX3VzZXJuYW1lIjoiamVzc3RlbXBvcmFsIiwiaWF0IjoxNTE2MjM5MDIyLCJleHAiOjE1NTIzMDU3MTB9eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9Payload
Signature
Header
LmUNPW9fSAqVTGEEFW0yrsD9eooyRv_VPB3r6tCWkRceyJzdWIiOiIxMjM0NTY3ODkwIiwiZ2l2ZW5fbmFtZSI6Ikplc3NpY2EiLCJmYW1pbHlfbmFtZSI6IlRlbXBvcmFsIiwicHJlZmVycmVkX3VzZXJuYW1lIjoiamVzc3RlbXBvcmFsIiwiaWF0IjoxNTE2MjM5MDIyLCJleHAiOjE1NTIzMDU3MTB9eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwiZ2l2ZW5fbmFtZSI6Ikplc3NpY2EiLCJmYW1pbHlfbmFtZSI6IlRlbXBvcmFsIiwicHJlZmVycmVkX3VzZXJuYW1lIjoiamVzc3RlbXBvcmFsIiwiaWF0IjoxNTE2MjM5MDIyLCJleHAiOjE1NTIzMDU3MTB9.LmUNPW9fSAqVTGEEFW0yrsD9eooyRv_VPB3r6tCWkRcjesstemporal.com
@jesstemporal
JWT
Don't put sensitive data in the JWT
@jesstemporal
Onde encontrar JWTs?
@jesstemporal
jesstemporal.com
Access token
@jesstemporal
jesstemporal.com
RFC 9068
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ID token
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jesstemporal.com
Como ter mais segurança ao usar JWTs
@jesstemporal
jesstemporal.com
Não guarde JWTs no local storage
@jesstemporal
jesstemporal.com
Não verifique JWTs no front end
@jesstemporal
jesstemporal.com
Não coloque dados sensíveis no JWT
@jesstemporal
jesstemporal.com
Para aprender mais
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jesstemporal.com
@jesstemporal
Até logo!
Vamos falar sobre JWT
By Jessica Temporal
Vamos falar sobre JWT
JSON Web Tokens, or JWTs for short, are all over the web. They can be used to track bits of information about a user in a very compact way and can be used in APIs for authorization purposes. Join me and learn what JWTs are, what problems it resolves, and how you can use JWTs on your applications.
