ADB2C | Auth Code

Abhay Chandramouli 1,061

Hi,

I have made a custom policy, (wrt the seamless migration approach documentation of MS) and a user flow.

When I run a user flow in pkce mode, I get a code of length ~20 chars
When I run the custom policy, I get the code length as ~ 1882 chars.

Is there a reason for this ? any config we could do ?

I am getting auth code too long error in the browser

Anonymous

2022-09-27T17:00:47.703+00:00

Hi @Abhay Chandramouli , how are you generating the code? PKCE requires codes to be between 43 and 128 characters. So it would seem both of yours are incorrect. What documents or tutorials are you using to set this up? Please let me know and I can help you further.

Thank you,
James
Abhay Chandramouli 1,061 Reputation points

2022-09-27T17:08:26.48+00:00

I am generating the code using custom policy and app regsitration combo

https://github.com/azure-ad-b2c/user-migration/tree/master/seamless-account-migration the custom policies I am using ( tho I have added some claims of my own)
we have specifed a redirect url as localhost:3001..

So first we call https://tenant.b2clogin.com/tenant.onmicrosoft.com/<policy-name>/oauth2/v2.0/authorize
with some params including scope plus response type as code

https://tenant.b2clogin.com/tenant.onmicrosoft.com/<policy-name>/oauth2/v2.0/token to get token
Abhay Chandramouli 1,061 Reputation points

2022-09-28T05:42:01.33+00:00

Hi @James Hamil ,
You said both of yours are incorrect. But we havent configured anything with regards to auth code size or token.. also when we exchange the auth code for a token, we successfully get the token.
is there somewhere we can configure the token length ?
Abhay Chandramouli 1,061 Reputation points

2022-10-11T14:09:10.73+00:00

Hi @James Hamil ,
Any help ?

Your answer