PKCEProvider.java

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package com.google.auth.oauth2;

public interface PKCEProvider {
  /**
   * Get the code_challenge parameter used in PKCE.
   *
   * @return The code_challenge String.
   */
  String getCodeChallenge();

  /**
   * Get the code_challenge_method parameter used in PKCE.
   *
   * <p>Currently possible values are: S256,plain
   *
   * @return The code_challenge_method String.
   */
  String getCodeChallengeMethod();

  /**
   * Get the code_verifier parameter used in PKCE.
   *
   * @return The code_verifier String.
   */
  String getCodeVerifier();
}