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OAuthまとめ

認証と認可

認証

誰であるかをチェックすること = 本人確認

認可

誰が*1 誰に*2 何の権限を与えるか

*1) 「誰が」は主に「ユーザーが」
*2) 「誰に」は主に「クライアントアプリに」

認可の「誰が」は認証処理(本人確認)になる。
つまり、認可処理の中に認証処理が含まれている。ややこしや。

OAuthのしくみ

OAuthの流れを図式化
oauth.png

赤く囲まれたところが、アクセストークンの要求とその応答を表している。
アクセストークンの要求と応答を標準化したもの = OAuth2.0

つまり、OAuthは認可の仕組みのこと。

nanaco
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