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Message-Level Encryption

Message Level Encryption (MLE) uses certificates to ensure that each message is securely encrypted and tied to the sender's verified identity, without needing to share secret keys in advance.
MLE provides stronger authentication, easier key management, and better protection against fraud or tampering.
A shared secret uses the same key for both sending and receiving messages, which means that both parties must securely exchange and protect that key in advance. While a shared secret can be simpler, it offers less identity verification and can be more vulnerable if the key is compromised.
Message-Level Encryption requires a .p12 certificate to be created.
  1. Enable Meta Key: Set to yes to tell the cartridge that the keys/certificate provided are Meta Keys
  2. Import the certificate by going to
    Administration > Operations > Private Keys and Certificates
     and importing the extracted
    .crt
    . Make a note of the alias.
  3. Enable Message Level Encryption by going to
    Merchant Tools > Site Preferences > Custom Preferences >
    Visa Acceptance for SMB
    _MLE
    .
  4. Enable the
    Enable Message-Level Encryption
     option.
  5. In the
    Alias of the Certificate
     field, enter the Alias from when the certificate was imported.
  6. In the
    Certificate Serial Number
     field, enter the serial number from the
    Visa Acceptance for SMB
    _SJC_US certificate.
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