Cognitoとは この記事が一番わかりやすかった。 http://qiita.com/imaifactory/items/b66cdf91118e3be6fe17 前提 test.png がおいてある ARN(arn:aws:iam::00000000000:role/Cognito_photo1Auth_DefaultRole)にS3の操作権限を設定してある { "Version": "2012-10-17", "Statement": [{ "Action": [ "mobileanalytics:PutEvents", "cognito-sync:*", "s3:*" ], "Effect": "Allow", "Resource": [ "*" ] }] } require 'aws-sdk' # Cognitoクライアントを作成する cognito_identity = Aws
![Cognitoで認証して、STSで認可して、S3に画像をアップロードする。Rubyで。 - Qiita](https://cdn-ak-scissors.b.st-hatena.com/image/square/42ed294d8ea116923b55bb2a66332511cc3ee399/height=288;version=1;width=512/https%3A%2F%2Fqiita-user-contents.imgix.net%2Fhttps%253A%252F%252Fcdn.qiita.com%252Fassets%252Fpublic%252Farticle-ogp-background-412672c5f0600ab9a64263b751f1bc81.png%3Fixlib%3Drb-4.0.0%26w%3D1200%26mark64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-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%26mark-x%3D142%26mark-y%3D57%26blend64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZoPTc2Jnc9NzcwJnR4dD0lNDB5dWppcm9hcmFpJnR4dC1jb2xvcj0lMjMyMTIxMjEmdHh0LWZvbnQ9SGlyYWdpbm8lMjBTYW5zJTIwVzYmdHh0LXNpemU9MzYmdHh0LWFsaWduPWxlZnQlMkN0b3Amcz1hNmE3MWJkYTJjYTM4NTdlMjhhNzVlNTExYTViNTVkNA%26blend-x%3D142%26blend-y%3D436%26blend-mode%3Dnormal%26txt64%3DaW4g5qCq5byP5Lya56S-R0lH%26txt-width%3D770%26txt-clip%3Dend%252Cellipsis%26txt-color%3D%2523212121%26txt-font%3DHiragino%2520Sans%2520W6%26txt-size%3D36%26txt-x%3D156%26txt-y%3D536%26s%3D547bcd056872755664267fabf2075a53)