From this code I'm getting the error below I'm getting the following error when trying to add a table into AWS's DynamoDB. So far I've: Checked to see if Authentication Key and Secret Key were correct, they were. Updated cURL When I put false authentication permissions in, the error didn't change. Answer It seems that your local system time might

Amazon DynamoDB InvalidSignatureException

From this code I’m getting the error below

require "vendor/autoload.php";
use AwsCommonAws;
use AwsDynamoDbDynamoDbClient;
use AwsDynamoDbEnumComparisonOperator;
use AwsDynamoDbEnumKeyType;
use AwsDynamoDbEnumType;

$aws = Aws::factory(array(
'key'    => '[clipped]',
'secret' => '[clipped]',
'region' => Region::US_WEST_1
));

$client = $aws->get("dynamodb");
$tableName = "ExampleTable";

$result = $client->createTable(array(
    "TableName" => $tableName,
    "AttributeDefinitions" => array(
        array(
           "AttributeName" => "Id",
           "AttributeType" => Type::NUMBER
        )
     ),
     "KeySchema" => array(
        array(
           "AttributeName" => "Id",
           "KeyType" => KeyType::HASH
        )
    ),
    "ProvisionedThroughput" => array(
        "ReadCapacityUnits"    => 5,
        "WriteCapacityUnits" => 6
    )
));

print_r($result->getPath('TableDescription'));

I’m getting the following error when trying to add a table into AWS’s DynamoDB.

PHP Fatal error:  Uncaught Aws\DynamoDb\Exception\DynamoDbException: AWS Error Code:
InvalidSignatureException, 
Status Code: 400, 
AWS Request ID: [clipped], 
AWS Error Type: client, 
AWS Error Message: Signature expired: 20130818T021159Z is now earlier than  
20130818T021432Z (20130818T022932Z - 15 min.), 
User-Agent: aws-sdk-php2/2.4.3 Guzzle/3.7.2 curl/7.21.6 PHP/5.3.6-13ubuntu3.9n  thrown in
/var/www/vendor/aws/aws-sdk-php/src/Aws/Common/Exception/NamespaceExceptionFactory.php on
line 91

So far I’ve:

Checked to see if Authentication Key and Secret Key were correct, they were.
Updated cURL
When I put false authentication permissions in, the error didn’t change.

Answer

It seems that your local system time might be incorrect. I’ve had a similar problem with AWS S3, where my system clock was skewed by 30 mins.

If you’re running ubuntu, try updating your system time:

sudo ntpdate ntp.ubuntu.com

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Answer