While symmetric keys are effective, they come with certain challenges:
Key Distribution: Both the sender and the recipient must have access to the same key, which can be difficult to manage securely. Distributing the key through insecure channels can compromise the entire encryption process. Scalability: In large email marketing campaigns involving multiple recipients, managing and distributing unique keys for each recipient can be cumbersome. Key Management: Ensuring the secure storage and rotation of keys is crucial. If a key is compromised, it can jeopardize the security of all encrypted messages.