Use ListCertificates with an Amazon SDK or CLI

    /// <summary>
    /// Lists all certificates associated with the account.
    /// </summary>
    /// <returns>List of certificate information, or empty list if listing failed.</returns>
    public async Task<List<Certificate>> ListCertificatesAsync()
    {
        try
        {
            var request = new ListCertificatesRequest();
            var response = await _amazonIoT.ListCertificatesAsync(request);

            _logger.LogInformation($"Retrieved {response.Certificates.Count} certificates");
            return response.Certificates;
        }
        catch (Amazon.IoT.Model.ThrottlingException ex)
        {
            _logger.LogWarning($"Request throttled, please try again later: {ex.Message}");
            return new List<Certificate>();
        }
        catch (Exception ex)
        {
            _logger.LogError($"Couldn't list certificates. Here's why: {ex.Message}");
            return new List<Certificate>();
        }
    }

//! List certificates registered in the AWS account making the call.
/*!
   \param clientConfiguration: AWS client configuration.
  \return bool: Function succeeded.
 */
bool AwsDoc::IoT::listCertificates(
        const Aws::Client::ClientConfiguration &clientConfiguration) {
    Aws::IoT::IoTClient iotClient(clientConfiguration);
    Aws::IoT::Model::ListCertificatesRequest request;

    Aws::Vector<Aws::IoT::Model::Certificate> allCertificates;
    Aws::String marker; // Used to paginate results.
    do {
        if (!marker.empty()) {
            request.SetMarker(marker);
        }

        Aws::IoT::Model::ListCertificatesOutcome outcome = iotClient.ListCertificates(
                request);

        if (outcome.IsSuccess()) {
            const Aws::IoT::Model::ListCertificatesResult &result = outcome.GetResult();
            marker = result.GetNextMarker();
            allCertificates.insert(allCertificates.end(),
                                   result.GetCertificates().begin(),
                                   result.GetCertificates().end());
        }
        else {
            std::cerr << "Error: " << outcome.GetError().GetMessage() << std::endl;
            return false;
        }
    } while (!marker.empty());

    std::cout << allCertificates.size() << " certificate(s) found." << std::endl;

    for (auto &certificate: allCertificates) {
        std::cout << "Certificate ID: " << certificate.GetCertificateId() << std::endl;
        std::cout << "Certificate ARN: " << certificate.GetCertificateArn()
                  << std::endl;
        std::cout << std::endl;
    }

    return true;
}

Example 1: To list the certificates registered in your Amazon account

The following list-certificates example lists all certificates registered in your account. If you have more than the default paging limit of 25, you can use the nextMarker response value from this command and supply it to the next command to get the next batch of results. Repeat until nextMarker returns without a value.

aws iot list-certificates

Output:

{
    "certificates": [
        {
            "certificateArn": "arn:aws:iot:us-west-2:123456789012:cert/604c48437a57b7d5fc5d137c5be75011c6ee67c9a6943683a1acb4b1626bac36",
            "certificateId": "604c48437a57b7d5fc5d137c5be75011c6ee67c9a6943683a1acb4b1626bac36",
            "status": "ACTIVE",
            "creationDate": 1556810537.617
        },
        {
            "certificateArn": "arn:aws:iot:us-west-2:123456789012:cert/262a1ac8a7d8aa72f6e96e365480f7313aa9db74b8339ec65d34dc3074e1c31e",
            "certificateId": "262a1ac8a7d8aa72f6e96e365480f7313aa9db74b8339ec65d34dc3074e1c31e",
            "status": "ACTIVE",
            "creationDate": 1546447050.885
        },
        {
            "certificateArn": "arn:aws:iot:us-west-2:123456789012:cert/b193ab7162c0fadca83246d24fa090300a1236fe58137e121b011804d8ac1d6b",
            "certificateId": "b193ab7162c0fadca83246d24fa090300a1236fe58137e121b011804d8ac1d6b",
            "status": "ACTIVE",
            "creationDate": 1546292258.322
        },
        {
            "certificateArn": "arn:aws:iot:us-west-2:123456789012:cert/7aebeea3845d14a44ec80b06b8b78a89f3f8a706974b8b34d18f5adf0741db42",
            "certificateId": "7aebeea3845d14a44ec80b06b8b78a89f3f8a706974b8b34d18f5adf0741db42",
            "status": "ACTIVE",
            "creationDate": 1541457693.453
        },
        {
            "certificateArn": "arn:aws:iot:us-west-2:123456789012:cert/54458aa39ebb3eb39c91ffbbdcc3a6ca1c7c094d1644b889f735a6fc2cd9a7e3",
            "certificateId": "54458aa39ebb3eb39c91ffbbdcc3a6ca1c7c094d1644b889f735a6fc2cd9a7e3",
            "status": "ACTIVE",
            "creationDate": 1541113568.611
        },
        {
            "certificateArn": "arn:aws:iot:us-west-2:123456789012:cert/4f0ba725787aa94d67d2fca420eca022242532e8b3c58e7465c7778b443fd65e",
            "certificateId": "4f0ba725787aa94d67d2fca420eca022242532e8b3c58e7465c7778b443fd65e",
            "status": "ACTIVE",
            "creationDate": 1541022751.983
        }
    ]
}

    /**
     * Lists all certificates asynchronously.
     *
     * This method initiates an asynchronous request to list all certificates.
     * If the request is successful, it prints the certificate IDs and ARNs.
     * If an exception occurs, it prints the error message.
     */
    public void listCertificates() {
        CompletableFuture<ListCertificatesResponse> future = getAsyncClient().listCertificates();
        future.whenComplete((response, ex) -> {
            if (response != null) {
                List<Certificate> certList = response.certificates();
                for (Certificate cert : certList) {
                    System.out.println("Cert id: " + cert.certificateId());
                    System.out.println("Cert Arn: " + cert.certificateArn());
                }
            } else {
                Throwable cause = ex != null ? ex.getCause() : null;
                if (cause instanceof IotException) {
                    System.err.println(((IotException) cause).awsErrorDetails().errorMessage());
                } else if (cause != null) {
                    System.err.println("Unexpected error: " + cause.getMessage());
                } else {
                    System.err.println("Failed to list certificates.");
                }
            }
        });

        future.join();
    }

suspend fun listCertificates() {
    IotClient.fromEnvironment { region = "us-east-1" }.use { iotClient ->
        val response = iotClient.listCertificates()
        val certList = response.certificates
        certList?.forEach { cert ->
            println("Cert id: ${cert.certificateId}")
            println("Cert Arn: ${cert.certificateArn}")
        }
    }
}

class IoTWrapper:
    """Encapsulates AWS IoT actions."""

    def __init__(self, iot_client, iot_data_client=None):
        """
        :param iot_client: A Boto3 AWS IoT client.
        :param iot_data_client: A Boto3 AWS IoT Data Plane client.
        """
        self.iot_client = iot_client
        self.iot_data_client = iot_data_client

    @classmethod
    def from_client(cls):
        iot_client = boto3.client("iot")
        iot_data_client = boto3.client("iot-data")
        return cls(iot_client, iot_data_client)

    def list_certificates(self):
        """
        Lists AWS IoT certificates.

        :return: The list of certificates.
        """
        try:
            certificates = []
            paginator = self.iot_client.get_paginator("list_certificates")
            for page in paginator.paginate():
                certificates.extend(page["certificates"])
            logger.info("Retrieved %s certificates.", len(certificates))
            return certificates
        except ClientError as err:
            if err.response["Error"]["Code"] == "ThrottlingException":
                logger.error("Request throttled. Please try again later.")
            else:
                logger.error(
                    "Couldn't list certificates. Here's why: %s: %s",
                    err.response["Error"]["Code"],
                    err.response["Error"]["Message"],
                )
            raise