Sender Verification for Encrypted Messaging Spam Filtering
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Solution Overview
Problem
Existing electronic messaging systems are vulnerable to spam messages, as they often rely on encryption that can circumvent spam filtering at network servers, making it difficult to prevent unwanted and unsolicited messages from being delivered to electronic devices.
Innovation Solution
The system sends a first unencrypted or low-encrypted message to determine if it is spam, and if not, subsequent messages are encrypted at a higher level only if the sender device is eligible based on identifiers and trustworthiness scores, ensuring that spam messages are filtered out by network servers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If encryption is used to protect message privacy, then message security is improved, but spam filtering capability deteriorates because encrypted messages cannot be analyzed by network servers
Solution Approach 1:
The messaging process is segmented into two distinct phases: an initial unencrypted phase for spam filtering and analysis, followed by an encrypted phase for private communication. This allows the system to maintain both spam filtering capability and message privacy by applying encryption only after spam detection is complete.
Solution Approach 2:
The system performs preliminary spam filtering and analysis using unencrypted messages before establishing encrypted communication. By conducting spam detection in advance on the clear text version of the message, the system can prevent spam from reaching the recipient while still allowing encrypted communication for legitimate messages.
2Object-affected harmful factors
If network servers analyze messages to filter spam, then spam detection is improved, but message privacy deteriorates because servers can read message content
Solution Approach 1:
The communication process is divided into two stages: first, unencrypted messages are analyzed by network servers for spam detection; second, legitimate messages are retransmitted with encryption applied. This segmentation ensures that privacy is maintained for legitimate communications while allowing necessary analysis for spam filtering.
Solution Approach 2:
Spam detection is performed as a preliminary action on unencrypted messages before encrypted communication is established. This allows the system to filter harmful content without permanently compromising the privacy of legitimate messages, as encryption is applied afterward.
3Reliability
If all messages are encrypted by default, then message security is improved, but system complexity increases due to eligibility verification requirements
Solution Approach 1:
The system applies different encryption characteristics to different senders based on their trustworthiness scores and eligibility status. Trusted senders receive full encryption benefits, while untrusted senders are blocked or subjected to enhanced verification. This local differentiation optimizes security without uniformly increasing complexity for all users.
Solution Approach 2:
The system dynamically adjusts encryption parameters and eligibility criteria based on sender trustworthiness scores. By changing the encryption level and verification requirements as parameters based on sender reputation, the system maintains high security for trusted communications while reducing overhead for verified senders.
Data Source
AI summary
The subject disclosure provides systems and methods for sender verification for encrypted electronic messaging. The discloses systems and methods may facilitate reducing or preventing spam messages between electronic devices. An electronic device may determine, prior to sending an electronic message to another device with a first level of encryption that is higher than a second level of encryption, whether the electronic device is eligible to send the message with the first level of encryption. If an electronic device determines that it is ineligible to send the message with the first level of encryption to another electronic device, a first message from the electronic device to the other electronic device may be sent with the second level of encryption as part of an unencrypted or low encryption handshake between the devices.