Question

我试图要求使用特定KMS密钥加密放入存储桶的所有对象。我设法要求KMS加密，但密钥规范不起作用。这是我现有的政策（没有真正的桶名和ID）：

{
    "Version": "2012-10-17",
    "Id": "PutObjPolicy",
    "Statement": [
        {
            "Sid": "DenyInsecureCommunications",
            "Effect": "Deny",
            "Principal": {
                "AWS": "*"
            },
            "Action": "s3:*",
            "Resource": "arn:aws:s3:::bucket1,
            "Condition": {
                "Bool": {
                    "aws:SecureTransport": "false"
                }
            }
        },
        {
            "Sid": "DenyIncorrectEncryptionHeader",
            "Effect": "Deny",
            "Principal": "*",
            "Action": "s3:PutObject",
            "Resource": "arn:aws:s3:::bucket1/*",
            "Condition": {
                "StringNotEquals": {
                    "s3:x-amz-server-side-encryption": "aws:kms",
                    "s3:x-amz-server-side-encryption-aws-kms-key-id": "arn:aws:kms:eu-central-1:123456789:key/12345-123-notmy-keyid-1234566"
                }
            }
        },

        {
            "Sid": "DenyUnEncryptedObjectUploads",
            "Effect": "Deny",
            "Principal": "*",
            "Action": "s3:PutObject",
            "Resource": "arn:aws:s3:::bucket1/*",
            "Condition": {
                "Null": {
                    "s3:x-amz-server-side-encryption": "true"
                }
            }
        }
    ]
}

这正确地拒绝上传而没有指定任何服务器端加密，但它仍然允许使用默认的s3密钥。

Answer 1

如果有多个条件运算符，或者单个条件运算符附加了多个键，则使用逻辑AND计算条件。

http://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_elements.html#Condition

这表明双条件策略只会拒绝两个字符串不相等（即，如果未使用加密和，则密钥ID为错）。

分开测试 s3:x-amz-server-side-encryption和 s3:x-amz-server-side-encryption-aws-kms-key-id分为两个单独的Deny政策声明应该是修复。

在S3存储桶策略中要求使用特定密钥ID进行KMS加密

1 个答案: