Python decode jwt token USING JOSE module

Question

Please help me to decode this jwt USING python jose module. I don't know what key I should use. because any online jwt decoder can decode it without any key.

token = eyJhbGciOiJSUzI1NiIsImtpZCI6ImVlYTFiMWY0MjgwN2E4Y2MxMzZhMDNhM2MxNmQyOWRiODI5NmRhZjAiLCJ0eXAiOiJKV1QifQ.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.kNFbqjtJO2HKsSX-jt967MLi2xjeRH4W9JsA4yPQDQEgrHqa3BX6PVFJCBjq-Fn7vmlTT1lUcElVPwtvcBUV8Z4I7dCuWKcTxTt6R8501f1I2X0tQeEu_zfg-ianzOlQkg3KvLT_D-oaIfNkoU7jAt4Mywe6xHiDKszlA6KE8T6PLV_VeiCJGvciLbPW7DhKiuL-kfTjhHoZ6_XHeruR6rb_psZNvH5t-D3Yjc27EwH0_Wumcl1GjN20eF2xO-UDhO4BMRHGIM5876QUYB58dxblLG1flEaeXi9z4R-XnrLPYpAYZDYQDcPMni9fUm9d8pNZDeTGh6WyGkTqkXuHvg

I tryied:

jwt.decode(token=token, key=???, algorithms='RS256')

Answer 1

Using PyJWT:

import jwt
from jwt import PyJWKClient


token = "eyJhbGciOiJSUzI1NiIsImtpZCI6ImVlYTFiMWY0MjgwN2E4Y2MxMzZhMDNhM2MxNmQyOWRiODI5NmRhZjAiLCJ0eXAiOiJKV1QifQ.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.kNFbqjtJO2HKsSX-jt967MLi2xjeRH4W9JsA4yPQDQEgrHqa3BX6PVFJCBjq-Fn7vmlTT1lUcElVPwtvcBUV8Z4I7dCuWKcTxTt6R8501f1I2X0tQeEu_zfg-ianzOlQkg3KvLT_D-oaIfNkoU7jAt4Mywe6xHiDKszlA6KE8T6PLV_VeiCJGvciLbPW7DhKiuL-kfTjhHoZ6_XHeruR6rb_psZNvH5t-D3Yjc27EwH0_Wumcl1GjN20eF2xO-UDhO4BMRHGIM5876QUYB58dxblLG1flEaeXi9z4R-XnrLPYpAYZDYQDcPMni9fUm9d8pNZDeTGh6WyGkTqkXuHvg"

# Insecure - doesn't validate the token.
decoded = jwt.decode(token, options={"verify_signature": False})

# Optional, not sure if if this increases security
url = "https://www.googleapis.com/oauth2/v3/certs"
client = PyJWKClient(url)
pub_key = client.get_signing_key_from_jwt(token).key
aud = jwt.decode(token, options={"verify_signature": False})["aud"]
decoded = jwt.decode(token, pub_key, algorithms=["RS256"], audience=aud, options={"verify_exp": False})

Answer 2

python-jose uses jwt.get_unverified_header() and jwt.get_unverified_claims().

from jose import jwt

token = "eyJhbGciOiJSUzI1NiIsImtpZCI6ImVlYTFiMWY0MjgwN2E4Y2MxMzZhMDNhM2MxNmQyOWRiODI5NmRhZjAiLCJ0eXAiOiJKV1QifQ.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.kNFbqjtJO2HKsSX-jt967MLi2xjeRH4W9JsA4yPQDQEgrHqa3BX6PVFJCBjq-Fn7vmlTT1lUcElVPwtvcBUV8Z4I7dCuWKcTxTt6R8501f1I2X0tQeEu_zfg-ianzOlQkg3KvLT_D-oaIfNkoU7jAt4Mywe6xHiDKszlA6KE8T6PLV_VeiCJGvciLbPW7DhKiuL-kfTjhHoZ6_XHeruR6rb_psZNvH5t-D3Yjc27EwH0_Wumcl1GjN20eF2xO-UDhO4BMRHGIM5876QUYB58dxblLG1flEaeXi9z4R-XnrLPYpAYZDYQDcPMni9fUm9d8pNZDeTGh6WyGkTqkXuHvg"

claims = jwt.get_unverified_claims(token)
header = jwt.get_unverified_header(token)

See below for details.

• Reading the Claimset without Validation
• Reading Headers without Validation