* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.testing;

import static com.google.common.base.Preconditions.checkNotNull;

/**
 * Methods factored out so that they can be emulated differently in GWT.
 *
 * @author Chris Povirk
 */
final class Platform {

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.collect.testing;

import com.google.common.annotations.GwtCompatible;
import java.util.Set;
import org.jspecify.annotations.NullMarked;
import org.jspecify.annotations.Nullable;

/**

 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */

package com.google.common.hash;

import static java.lang.Math.min;

import com.google.common.annotations.VisibleForTesting;
import com.google.common.primitives.Longs;
import java.lang.reflect.Field;
import java.nio.ByteOrder;
import java.security.AccessController;

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.collect.testing;

import static com.google.common.collect.testing.ReflectionFreeAssertThrows.assertThrows;

import com.google.common.annotations.GwtCompatible;
import java.util.Iterator;
import java.util.Map.Entry;
import java.util.SortedMap;

/**

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.collect.testing;

import static com.google.common.collect.testing.ReflectionFreeAssertThrows.assertThrows;

import com.google.common.annotations.GwtCompatible;
import java.util.Iterator;
import java.util.Map.Entry;
import java.util.SortedMap;

/**

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.graph;

import com.google.common.collect.Ordering;
import java.util.Arrays;
import java.util.Collection;
import org.jspecify.annotations.NullUnmarked;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.graph;

import com.google.common.collect.Ordering;
import java.util.Arrays;
import java.util.Collection;
import org.jspecify.annotations.NullUnmarked;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.graph;

import com.google.common.collect.Ordering;
import java.util.Arrays;
import java.util.Collection;
import org.jspecify.annotations.NullUnmarked;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;

 * limitations under the License.
 */

package com.google.common.hash;

import static com.google.common.truth.Truth.assertThat;
import static java.nio.charset.StandardCharsets.UTF_16LE;
import static org.junit.Assert.assertThrows;

import com.google.common.collect.Iterables;
import com.google.common.hash.HashTestUtils.RandomHasherAction;
import java.io.ByteArrayOutputStream;

## OAuth2 { #oauth2 }

OAuth2는 인증과 인가를 처리하는 여러 방법을 정의하는 명세입니다.

상당히 방대한 명세이며 여러 복잡한 사용 사례를 다룹니다.

"제3자"를 사용해 인증하는 방법도 포함합니다.

바로 `"Facebook, Google, X (Twitter), GitHub로 로그인"` 같은 시스템들이 내부적으로 사용하는 방식입니다.

### OAuth 1 { #oauth-1 }

OAuth 1도 있었는데, 이는 OAuth2와 매우 다르고 통신을 암호화하는 방법까지 직접 명세에 포함했기 때문에 더 복잡했습니다.

요즘에는 그다지 인기 있거나 사용되지는 않습니다.