IUserCodeNormalizer Interface

Canonicalizes a user-entered user code before it is matched against a stored code in the Device Authorization Grant (RFC 8628). RFC 8628 Section 6.1 recommends that the server strip readability punctuation the user may have copied (dashes, spaces), case-fold input for single-case character sets, and drop any characters outside the configured alphabet, so that equivalent user input is not rejected as invalid.

public interface IUserCodeNormalizer

Derived
↳ UserCodeNormalizer

Methods

IUserCodeNormalizer.Normalize(string) Method

Produces the canonical form of a user code for comparison: characters outside the configured alphabet are removed, and case is folded when the alphabet is single-case.

string Normalize(string userCode);

Parameters

userCode System.String

The raw user code as entered by the end-user.

Returns

System.String
The canonical user code used for storage lookup and rate limiting.