I am using AWS Cognito for authenticating users.
I have created a server using Kosjs and used koa-jwt library to verify if users have valid id_tokens.
koa-jwt expects an aud property in the id_token which initially exists in the id_token returned by AWS Cognito.
But when I use the refresh token to get a new token, the new token contains client_id instead of aud.
Because of this, the koa-jwt doesn't verify the id_token anymore.
Is there any way to get a consistent result from AWS Cognito?
This is the sample id_token after login:
{
"sub": "1Xfe6c44-XXXX-4cbf-9fb2-2778a1b0e5be",
"email_verified": true,
"iss": "https://cognito-idp.ap-northeast-1.amazonaws.com/ap-northeast-1_xxxOUKTJu",
"phone_number_verified": true,
"cognito:username": "[email protected]",
"given_name": "Some1",
"aud": "xxxxf9f0lmr1q6ni2c09umdds",
"event_id": "9cf03730-xxxx-11e9-a89f-67080ff7c936",
"token_use": "id",
"auth_time": 1546931916,
"phone_number": "+16806666986",
"exp": 1546935516,
"iat": 1546931916,
"family_name": "Some2",
"email": "[email protected]"
}and this is the sample id_token returned by refresh_token:
{
"sub": "16fe6c44-xxxx-xxxx-9fb2-2778a1b0e5be",
"event_id": "9cf03730-xxxx-xxxx-a89f-67080ff7c936",
"token_use": "access",
"scope": "aws.cognito.signin.user.admin",
"auth_time": 1546931916,
"iss": "https://cognito-idp.ap-northeast-1.amazonaws.com/ap-northeast-1_xxxxxKTJu",
"exp": 1546939290,
"iat": 1546935690,
"jti": "6fab7b58-xxxx-xxxx-a339-ddb6467e2d4c",
"client_id": "xxxxx9f0lmr1q6ni2c09umdds",
"username": "[email protected]"
}