从认知组承担IAM角色

Question

是否可以将IAM角色IAM-role1链接到Cognito用户池cognito-user1中Cognito用户cognito-user1的Cognito组cognito-group1？

我的配置：

Cognito用户池cognito-user-pool1:

• 认知用户cognito-user1属于cognito-group1
• 认知组cognito-group1已分配给IAM-role1.

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这段代码允许我对Cognito用户池进行身份验证：

AmazonCognitoIdentityProviderClient provider = new AmazonCognitoIdentityProviderClient();
            CognitoUserPool userPool = new CognitoUserPool("user-pool-id", "client-id", provider);
            CognitoUser user = new CognitoUser("cognito-user1", "client-id", userPool, provider);
            InitiateSrpAuthRequest authRequest = new InitiateSrpAuthRequest()
            {
                Password = "cognito-password1"
            };

            AuthFlowResponse authResponse = await user.StartWithSrpAuthAsync(authRequest);

然后从cognito标识池cognito-identity-pool1中获取链接到cognito用户池cognito-user-pool1的凭据：

CognitoAWSCredentials credentials = user.GetCognitoAWSCredentials("identity-pool-arn", RegionEndpoint.USEast1); 
using (var client = new AmazonS3Client(credentials))
...

Answer 1

当使用认知用户池cognito-user-pool1对用户进行身份验证时，id令牌包括认知组和iam角色：

"cognito:groups": [
    "cognito-group1"
  ],
"cognito:roles": [
    "arn:aws:iam::xxx:role/iam-role1"
  ],

我们还需要通过编辑IAM角色IAM-role1中的信任关系来允许认知标识池承担此角色：

{
  "Version": "2012-10-17",
  "Statement": [
    ...
    {
      "Effect": "Allow",
      "Principal": {
        "Federated": "cognito-identity.amazonaws.com"
      },
      "Action": "sts:AssumeRoleWithWebIdentity"
    }
  ]
}