- What's New
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- How Many Message Templates Can I Create?
- What Are the Limitations on SMS Messages?
- Can I Add Subscriptions Using Multiple Protocols to a Topic?
- Can a Topic Creator Change Subscription Protocols in a Topic?
- Can I Change a Subscription Endpoint for a Topic?
- Can I Delete a Published Message?
- Does SMN Ensure That Messages Are Received by Subscription Endpoints?
- Will a Subscriber Receive the Same Message Multiple Times?
- Why Do Subscribers Fail to Receive Messages After I Publish Messages to a Topic?
- What Can I Do When Pictures in an Email Message Cannot Be Displayed?
- Does SMN Always Use the Same Phone Number or Sender Name to Send SMS Messages?
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- How Does a DingTalk, Internal DingTalk, Lark, or WeCom Chatbot Obtain Subscription Endpoints?
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More Documents
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User Guide (ME-Abu Dhabi Region)
- Overview
- Getting Started
- Topic Management
- Subscription Management
- Message Template Management
- SMN Operation Recording
- Logs
- Permissions Management
- Quotas
-
FAQs
- What Are the Advantages of SMN?
- What Protocols Does SMN Support?
- What Are the Requirements for an SMN Topic Name?
- How Many Topics Can I Create?
- How Many Subscriptions Can Be Added to a Topic?
- How Many Messages Can Be Published to a Topic?
- How Many Message Templates Can I Create?
- Can I Add Subscriptions Using Multiple Protocols to a Topic?
- Can a Topic Creator Change Subscription Protocols in a Topic?
- Can I Change a Subscription Endpoint for a Topic?
- Can I Delete a Published Message?
- Does SMN Ensure That Messages Are Received by Subscription Endpoints?
- Will a Subscriber Receive the Same Message Multiple Times?
- Why Do Subscribers Fail to Receive Messages After I Publish Messages to a Topic?
- What Can I Do When Pictures in an Email Message Cannot Be Displayed?
- How Do I Obtain My Account ID?
- Appendix
- Change History
- API Reference
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User Guide (Paris Region)
- Overview
- Getting Started
- Topic Management
- Subscription Management
- Message Template Management
- SMN Operation Recording
- Logs
- Quotas
-
FAQs
- What Are the Advantages of SMN?
- What Protocols Does SMN Support?
- What Are the Requirements for an SMN Topic Name?
- How Many Topics Can I Create?
- How Many Subscriptions Can Be Added to a Topic?
- How Many Messages Can Be Published to a Topic?
- How Many Message Templates Can I Create?
- What Are the Limitations on SMS Messages?
- Can I Add Subscriptions Using Multiple Protocols to a Topic?
- Can a Topic Creator Change Subscription Protocols in a Topic?
- Can I Change a Subscription Endpoint for a Topic?
- Can I Delete a Published Message?
- Does SMN Ensure That Messages Are Received by Subscription Endpoints?
- Will a Subscriber Receive the Same Message Multiple Times?
- Why Do Subscribers Fail to Receive Messages After I Publish Messages to a Topic?
- What Can I Do When Pictures in an Email Message Cannot Be Displayed?
- How Do I Obtain My Account ID?
- Appendix
- Change History
- API Reference (Paris Region)
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User Guide (Kuala Lumpur Region)
- Overview
- Getting Started
- Topic Management
- Subscription Management
- Message Template Management
- SMN Operation Recording
- Logs
- Permissions Management
- Quotas
-
FAQs
- What Are the Advantages of SMN?
- What Protocols Does SMN Support?
- What Are the Requirements for an SMN Topic Name?
- How Many Topics Can I Create?
- How Many Subscriptions Can Be Added to a Topic?
- How Many Messages Can Be Published to a Topic?
- How Many Message Templates Can I Create?
- Can I Add Subscriptions Using Multiple Protocols to a Topic?
- Can a Topic Creator Change Subscription Protocols in a Topic?
- Can I Change a Subscription Endpoint for a Topic?
- Can I Delete a Published Message?
- Does SMN Ensure That Messages Are Received by Subscription Endpoints?
- Will a Subscriber Receive the Same Message Multiple Times?
- Why Do Subscribers Fail to Receive Messages After I Publish Messages to a Topic?
- What Can I Do When Pictures in an Email Message Cannot Be Displayed?
- How Do I Obtain My Account ID?
- Appendix
- Change History
- API Reference (Kuala Lumpur Region)
-
User Guide (Ankara Region)
- Overview
- Getting Started
- Topic Management
- Subscription Management
- Message Template Management
- Permissions Management
- Quotas
-
FAQs
- What Are the Advantages of SMN?
- What Protocols Does SMN Support?
- What Are the Requirements for an SMN Topic Name?
- How Many Topics Can I Create?
- How Many Subscriptions Can Be Added to a Topic?
- How Many Messages Can Be Published to a Topic?
- How Many Message Templates Can I Create?
- Can I Add Subscriptions Using Multiple Protocols to a Topic?
- Can a Topic Creator Change Subscription Protocols in a Topic?
- Can I Change a Subscription Endpoint for a Topic?
- Can I Delete a Published Message?
- Does SMN Ensure That Messages Are Received by Subscription Endpoints?
- Will a Subscriber Receive the Same Message Multiple Times?
- Why Do Subscribers Fail to Receive Messages After I Publish Messages to a Topic?
- What Can I Do When Pictures in an Email Message Cannot Be Displayed?
- How Do I Obtain My Account ID?
- Appendix
- Change History
- API Reference (Ankara Region)
-
User Guide (ME-Abu Dhabi Region)
- General Reference
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Message Signature Verification
Scenarios
To ensure message security, SMN provides signature authentication for HTTP/HTTPS subscription confirmation messages, subscription cancellation messages, and notification messages. After you receive HTTP/HTTPS messages, check them based on the signatures.
Procedure
After receiving an HTTP/HTTPS message, check it with the following procedure:
- Verify the key-value pairs (which vary depending on the message type) contained in the message signature. For details, see Signature Strings for Different Message Types.
- Download the X509 certificate from the certificate URL (signing_cert_url) contained in the message.
NOTE:
The request to download the certificate is always sent over HTTPS. When you download a certificate, verify the identity of the certificate server.
- Extract the public key from the X509 certificate for verifying the message reliability and integrity.
- Determine which method will be used to verify the signature based on the message type (the type field in the message).
- Create signature strings. Obtain the signature parameters from the message and sort them in alphabetical order. Each parameter occupies a line, with its value following in the next line.
Signature Strings for Different Message Types
- Notification messages
- A notification message signature must contain the following parameters (If subject is left blank, omit subject in the signature):
message message_id subject timestamp topic_urn type
- Example signature information for a notification message
message My test message message_id 88c726942175432bac921eafd0036163 subject demo timestamp 2016-08-15T07:29:16Z topic_urn urn:smn:regionId:74dc9e44d0cc4573adfce91cdfdd3ba9:xxxx type Notification
NOTE:
Each parameter occupies a line and its value follows in the next line.
- A notification message signature must contain the following parameters (If subject is left blank, omit subject in the signature):
- Subscription confirmation and subscription cancellation messages
- A subscription confirmation or subscription cancellation message signature must contain the following parameters:
message message_id subscribe_url timestamp topic_urn type
- Example signature information for a subscription confirmation message
message You are invited to subscribe to topic: urn:smn:regionId:d91989905b8449b896f3a4f0ad57222d:demo. To confirm this subscription, please visit the following SubscribeURL in this message. message_id def5c309cbff44d5a870787ed937edf8 subscribe_url https://IP address/smn/subscription/confirm?Region ID&Token&Topic URN:demo timestamp 2016-08-15T07:29:16Z topic_urn urn:smn:regionId:d91989905b8449b896f3a4f0ad57222d:demo type SubscriptionConfirmation
NOTE:
Each parameter occupies a line and its value follows in the next line.
- A subscription confirmation or subscription cancellation message signature must contain the following parameters:
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