Setting up AS1 (Applicability Statement 1) involves configuring both the sending and receiving partners to exchange EDI documents securely via email. Here's a step-by-step guide to set up AS1:
Prerequisites
- AS1-compatible software installed on both the sender and receiver sides.
- Public and private key pairs for both parties.
- Email servers configured for sending and receiving emails.
Step-by-Step AS1 Setup
==>> 1. Configure the Email Server
Both the sender and receiver must have email servers configured to send and receive emails.
1. Email Server Setup:
- Ensure that the email server is configured with the correct SMTP (for sending emails) and IMAP/POP3 (for receiving emails) settings.
- Test sending and receiving emails outside of the AS1 environment to confirm that the email server is functioning correctly.
==>> 2. Generate and Exchange Certificates
1. Generate Certificates:
- Generate a public and private key pair for both the sender and receiver.
- Use a tool like OpenSSL or the certificate generation feature in your AS1 software.
2. Exchange Certificates:
- Exchange the public keys (certificates) between the sender and receiver.
- Import the receiver's public key into the sender's AS1 software and vice versa.
==>> 3. Configure AS1 Software
==>># Sender Configuration
1. Create a New AS1 Partner:
- Open your AS1 software and navigate to the section where you can manage trading partners.
- Create a new partner profile for the receiving partner.
2. Configure Partner Details:
- Enter the receiver’s email address.
- Attach the receiver’s public key to encrypt the outgoing messages.
3. Set Up Signing:
- Attach your own private key to sign the messages.
- Specify the signing algorithm (e.g., SHA-256).
4. Define Email Server Settings:
- Enter your SMTP server details (SMTP server address, port, username, password).
- Specify any additional settings required by your email server (e.g., SSL/TLS).
==>># Receiver Configuration
1. Create a New AS1 Partner:
- Open your AS1 software and navigate to the section where you can manage trading partners.
- Create a new partner profile for the sending partner.
2. Configure Partner Details:
- Enter the sender’s email address.
- Attach the sender’s public key to verify incoming signed messages.
3. Set Up Decryption:
- Attach your own private key to decrypt incoming messages.
- Specify the decryption algorithm.
4. Define Email Server Settings:
- Enter your IMAP/POP3 server details (server address, port, username, password).
- Specify any additional settings required by your email server (e.g., SSL/TLS).
==>> 4. Test the Configuration
1. Send a Test Message:
- Create a test EDI message and send it from the sender to the receiver using the AS1 software.
- Check the sender’s logs for any errors during the sending process.
2. Receive and Process the Message:
- On the receiver’s side, check the email inbox to ensure the message was received.
- Verify that the AS1 software has successfully decrypted and processed the message.
- Check the receiver’s logs for any errors during the receiving process.
3. Generate and Send MDN (Message Disposition Notification):
- The receiver’s AS1 software should automatically generate an MDN.
- Verify that the MDN is sent back to the sender.
- On the sender’s side, confirm receipt of the MDN and ensure it indicates successful processing.
==>> 5. Monitor and Maintain
1. Regular Monitoring:
- Regularly monitor the AS1 software logs for any errors or issues.
- Ensure that the email server is consistently sending and receiving messages without interruption.
2. Certificate Management:
- Keep track of certificate expiration dates.
- Renew and exchange certificates before they expire to avoid disruptions.
3. Security Updates:
- Keep the AS1 software and email server software up to date with the latest security patches and updates.
By following these steps, you can set up and configure AS1 for secure EDI document exchange via email. The key components involve configuring the email server, generating and exchanging certificates, configuring the AS1 software for both sending and receiving partners, and thoroughly testing the setup to ensure reliable communication.
How AS1 works in EDI step by step
AS1 (Applicability Statement 1) is a standard for securely transmitting EDI (Electronic Data Interchange) documents over email. It uses standard email protocols for communication and adds digital signatures and encryption for security. Here's a step-by-step overview of how AS1 works in EDI:
Step-by-Step AS1 Process
==>> 1. Document Preparation
1. EDI Document Creation:
- The sender's system generates an EDI document that needs to be transmitted to the receiver.
==>> 2. Document Encryption and Signing
1. Digital Signature:
- The sender's AS1 software digitally signs the EDI document using the sender's private key. This ensures the authenticity and integrity of the document.
2. Encryption:
- The signed document is then encrypted using the receiver's public key. This ensures that only the intended receiver can decrypt and read the document.
==>> 3. Email Packaging
1. MIME Packaging:
- The encrypted and signed EDI document is packaged into a MIME (Multipurpose Internet Mail Extensions) format. This is similar to attaching a file to an email.
2. Email Headers:
- The AS1 software adds necessary email headers to the MIME package to facilitate AS1 processing. These headers include information about the sender, receiver, and the security algorithms used.
==>> 4. Email Transmission
1. Send Email:
- The AS1 software sends the MIME-packaged email via the configured SMTP (Simple Mail Transfer Protocol) server to the receiver's email address.
==>> 5. Email Reception
1. Receive Email:
- The receiver's email server receives the AS1 email and stores it in the receiver's email inbox.
2. Download Email:
- The receiver's AS1 software retrieves the AS1 email from the inbox using IMAP (Internet Message Access Protocol) or POP3 (Post Office Protocol 3).
==>> 6. Document Decryption and Verification
1. Decryption:
- The receiver's AS1 software decrypts the received email using the receiver's private key. This process extracts the signed EDI document.
2. Signature Verification:
- The AS1 software verifies the digital signature using the sender's public key. This ensures that the document was indeed sent by the sender and has not been tampered with.
==>> 7. Message Processing
1. Extract EDI Document:
- The verified and decrypted EDI document is extracted from the MIME package.
2. EDI Processing:
- The receiver's system processes the EDI document as per the business requirements.
==>> 8. Message Disposition Notification (MDN)
1. Generate MDN:
- After processing the EDI document, the receiver's AS1 software generates a Message Disposition Notification (MDN). The MDN includes the Message Integrity Check (MIC) value, indicating the status of the received message (success or failure).
2. Sign and Encrypt MDN:
- The MDN is digitally signed by the receiver using the receiver's private key and encrypted using the sender's public key.
3. Send MDN:
- The signed and encrypted MDN is sent back to the sender via email using the configured SMTP server.
==>> 9. MDN Reception and Verification
1. Receive MDN:
- The sender's email server receives the MDN and stores it in the sender's email inbox.
2. Download MDN:
- The sender's AS1 software retrieves the MDN from the inbox.
3. Decrypt MDN:
- The sender's AS1 software decrypts the MDN using the sender's private key.
4. Verify MDN:
- The digital signature on the MDN is verified using the receiver's public key. This confirms the authenticity of the MDN.
5. Check MIC:
- The sender’s AS1 software compares the MIC value in the MDN with the original MIC value of the sent EDI document. If they match, it confirms that the document was received and processed successfully without alterations.
Summary
The AS1 process involves multiple steps to ensure secure and reliable transmission of EDI documents over email. It includes signing, encrypting, packaging, sending, receiving, decrypting, verifying, and acknowledging the EDI documents, ensuring the integrity and authenticity of the data exchanged between trading partners.
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