Module pkce 

PKCE (Proof Key for Code Exchange) utilities for OAuth 2.0.

Implements RFC 7636 for secure OAuth flows without client secrets. Uses SHA-256 (S256) code challenge method as recommended by the spec.

Structs

PkceChallenge

PKCE challenge pair containing verifier and challenge strings.

Functions

generate_pkce_challenge

Generate a cryptographically secure PKCE challenge pair.