Я отправляю сообщения SNS конечной точке HTTP. Я могу получить информацию о сообщении из данных JSON, но как мне проверить подлинность сообщения и проверить подпись сообщения?
Это одно из сообщений:
{
"Type": "Notification",
"MessageId": "a1825ceb-aa86-531a-9712-09b49bb60b32",
"TopicArn": "arn:aws:sns:us-west-2:xxxx:Test_Topic",
"Message": "This is the message body",
"Timestamp": "2019-05-22T11:13:52.513Z",
"SignatureVersion": "1",
"Signature": "abcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabc",
"SigningCertURL": "https://sns.us-west-2.amazonaws.com/SimpleNotificationService-abcabcabc.pem",
"UnsubscribeURL": "https://sns.us-west-2.amazonaws.com/?Action=Unsubscribe&SubscriptionArn=arn:aws:sns:us-west-2:yyy",
"MessageAttributes": {
"String2": {
"Type": "String",
"Value": "This is the second string"
},
"String1": {
"Type": "String",
"Value": "This is the first string"
}
}
}
Как проверить правильность подписи сообщения?