NeaPay ISO8583 Converter integration with cloud-native messaging platforms AWS SQS, Google Pub/Sub, Azure Event Grid

Scope NeaPay ISO8583 Converter

• Supported Services:
  • AWS SQS (Simple Queue Service)
  • Google Pub/Sub
  • Azure Event Grid
• Functions:
  • Publish ISO8583 messages to cloud queues/topics.
  • Consume messages for processing or forwarding.
  • Ensure encryption and compliance.

Technical Prerequisites NeaPay ISO8583 Converter

• Cloud account credentials (AWS IAM, GCP Service Account, Azure AD).
• SDKs or APIs for each platform:
  • AWS SDK for Java/Python.
  • Google Cloud Pub/Sub client.
  • Azure Event Grid SDK.
• PCI DSS-compliant environment (TLS, encryption at rest).
• ISO8583 → JSON conversion capability (already in NeaPay).

Architecture Design

Flow:

Payment Switch → NeaPay ISO8583 Converter → Cloud Messaging Adapter → Cloud Queue/Topic → Consumers (Risk Engine, Analytics, Settlement)

• Converter: Parses ISO8583, converts to JSON.
• Adapter: Handles cloud-specific publishing logic.
• Consumers: Fraud detection, reporting, etc.

Implementation NeaPay ISO8583 Converter

1. Create Cloud Messaging Adapter
   • Implement interfaces for AWS, GCP, Azure.
   • Support publish/subscribe patterns.
2. Message Serialization
   • Convert ISO8583 → JSON or Avro.
   • Include metadata (transaction ID, timestamp).
3. Security
   • Enable TLS for all connections.
   • Encrypt sensitive fields before publishing.
4. Retry & Dead Letter Queues
   • Configure retries for failed deliveries.
   • Use DLQs for error handling.
5. Monitoring
   • Integrate with cloud monitoring (CloudWatch, Stackdriver, Azure Monitor).

Example Code Snippets

AWS SQS NeaPay ISO8583 Converter (Java)

AmazonSQS sqs = AmazonSQSClientBuilder.defaultClient();
SendMessageRequest sendMsgRequest = new SendMessageRequest()
    .withQueueUrl(queueUrl)
    .withMessageBody(iso8583Json);
sqs.sendMessage(sendMsgRequest);

Google Pub/Sub NeaPay ISO8583 Converter (Java)

Publisher publisher = Publisher.newBuilder(topicName).build();
PubsubMessage message = PubsubMessage.newBuilder()
    .setData(ByteString.copyFromUtf8(iso8583Json))
    .build();
publisher.publish(message);

Azure Event Grid NeaPay ISO8583 Converter

EventGridPublisherClient client = new EventGridPublisherClientBuilder()
    .endpoint(endpoint)
    .credential(new AzureKeyCredential(key))
    .buildClient();
client.sendEvent(new EventGridEvent("ISO8583", "Transaction", iso8583Json, "1.0"));

Compliance

• Mask PAN before publishing.
• Encrypt sensitive fields using HSM or AES.
• Enable audit logging for all message operations.

KPIs

• Latency:
• Reliability: 99.99% delivery guarantee.
• Scalability: Handle peak loads (e.g., 10K TPS).

ISO8583 Fields to Mask/Encrypt Before Cloud Messaging

ISO8583 FieldAction Before PublishingReasonField 2 (PAN)Mask (e.g., 1234********3456)PCI DSS complianceField 35 (Track 2 Data)EncryptContains PAN + expiryField 52 (PIN Block)Do NOT publish (remove)Highly sensitiveField 55 (ICC Data)EncryptEMV cryptogramsField 64 (MAC)Keep as isIntegrity checkField 3, 4, 11, 41, 42Keep as isTransaction contextField 53 (Security Info)RemoveInternal cryptographic details

Example ISO8583 JSON Structures for Cloud Messaging NeaPay ISO8583 Converter

AWS SQS Example

{
  "transactionId": "TX123456789",
  "iso8583": {
    "MTI": "0200",
    "fields": {
      "2": "1234********3456",
      "3": "000000",
      "4": "000000010000",
      "11": "123456",
      "35": "EncryptedTrack2Data",
      "41": "TERMID01",
      "42": "MERCHANT01",
      "55": "EncryptedICCData",
      "64": "ABCDEF1234567890"
    }
  },
  "metadata": {
    "timestamp": "2025-11-20T10:30:00Z",
    "source": "POS",
    "region": "EU"
  }
}

Google Pub/Sub Example

{
  "messageId": "pubsub-987654",
  "attributes": {
    "transactionType": "Authorization",
    "priority": "High"
  },
  "data": {
    "MTI": "0200",
    "fields": {
      "2": "1234********3456",
      "3": "000000",
      "4": "000000010000",
      "11": "123456",
      "35": "EncryptedTrack2Data",
      "41": "TERMID01",
      "42": "MERCHANT01",
      "55": "EncryptedICCData",
      "64": "ABCDEF1234567890"
    }
  }
}

Azure Event Grid Example

{
  "id": "eventgrid-12345",
  "eventType": "ISO8583.Transaction",
  "subject": "Authorization",
  "eventTime": "2025-11-20T10:30:00Z",
  "data": {
    "MTI": "0200",
    "fields": {
      "2": "1234********3456",
      "3": "000000",
      "4": "000000010000",
      "11": "123456",
      "35": "EncryptedTrack2Data",
      "41": "TERMID01",
      "42": "MERCHANT01",
      "55": "EncryptedICCData",
      "64": "ABCDEF1234567890"
    }
  },
  "dataVersion": "1.0"
}