Asp.Net Core jwt token is transformed after authentication

I have Cognito id token with email claim.

  ..........
  "iat": 164456734,
  "jti": "81ac2634-e241-444f-88cf-eabf454644",
  "email": "[email protected]"
}

However, after asp net core jwt middleware authentication email claim is transformed from email type to http://schemas.xmlsoap.org/ws/2005/05/identity/claims/emailaddress - ClaimTypes.Email in C#.

But then I read the token manually:

var token = new JwtSecurityTokenHandler().ReadJwtToken(jwtToken);
var claimsIdentity = new ClaimsIdentity(token.Claims);
var claimsPrincipal = new ClaimsPrincipal(claimsIdentity)

Claim type is not transformed and remains email.

Why in asp net core authentication claim is transformed to http://schemas.xmlsoap.org/ws/2005/05/identity/claims/emailaddress?

Can I create claimsPrincipal manually having this email claim transformation without manually modifying Claims list?

Solution 1:

It has in fact been understood as ClaimTypes.Email, however the string returned by this property is http://schemas.xmlsoap.org/ws/2005/05/identity/claims/emailaddress (source).

The token is not transformed, unless specifically done so, rather parsed and understood as ClaimTypes.Email with the actual token not modified.