Mail Server Email Encryption Relay Security
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Solution Overview
Problem
Email encryption methods like S/MIME require user knowledge and adoption, which can be cumbersome, leading to security risks when relay mail servers have access to unencrypted email contents, especially if malicious.
Innovation Solution
Implementing a system where sender and recipient mail servers handle encryption and decryption using public and private keys, ensuring that relay mail servers cannot access encrypted email contents, without requiring individual user key management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If email encryption methods like S/MIME are implemented, then email security is improved, but user complexity and operational burden increase
Solution Approach 1:
The patent introduces mail servers as intermediaries that automatically handle encryption and decryption operations. The sender's mail server encrypts emails before transmission, and the recipient's mail server decrypts them upon receipt, eliminating the need for users to directly manage encryption keys or protocols while maintaining security
Solution Approach 2:
The mail server system performs encryption and decryption autonomously without requiring user intervention. The servers automatically obtain public keys, encrypt outgoing emails, and decrypt incoming emails, making the security mechanism self-service and transparent to users
2Adaptability or versatility
If relay mail servers are used for email transmission, then routing flexibility is improved, but security risks increase due to potential unauthorized access
Solution Approach 1:
The patent applies preliminary encryption to emails before they are handed over to relay mail servers. By encrypting the email content with the recipient's public key before relay transmission, the system preemptively prevents unauthorized access by relay servers, as they cannot decrypt the encrypted content without the recipient's private key
Data Source
AI summary
Disclosed are systems and methods that facilitate encryption of email messages that are transported between mail servers. In some cases, email messages may be relayed through relay mail servers as well. An email message can be encrypted using a public key that corresponds to an organization associated with the recipient rather than a public key associated with the particular recipient. The email message can then be decrypted by the recipient mail server and deposited into a mailbox of the recipient.