Unified Messaging Voice Channel Security Level Enforcement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Confidential voicemail or email messages can be intercepted or listened to over unsecured voice channels, defeating encryption schemes intended to protect sensitive information in unified messaging systems.
Innovation Solution
A messaging system that enhances message metadata with a voice channel security level (VCSL) attribute, ensuring messages marked as confidential can only be listened to over an encrypted voice channel by automatically assigning a high VCSL based on content or user preferences, and negotiating encryption if the channel is unsecured.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If email messages are encrypted to protect confidential information, then message content security is improved, but the messages can still be listened to over unsecured voice channels which defeats the encryption scheme
Solution Approach 1:
The system applies preliminary anti-action by checking the security level of the voice channel before allowing playback of encrypted messages. The unified messaging system proactively prevents unauthorized listening by verifying channel security credentials in advance, rather than reacting after interception occurs. This resolves the contradiction by maintaining message content security while blocking access through unsecured channels.
Solution Approach 2:
The unified messaging system acts as an intermediary between the encrypted message and the voice channel. It mediates the playback process by verifying the security level of the channel and enforcing access control policies. This intermediary function ensures that encrypted messages are only played back through secure channels, preventing the defeat of encryption schemes while maintaining convenient unified messaging access.
2Ease of operation
If unified messaging systems allow access to messages through multiple devices (PC and telephone), then user convenience and accessibility are improved, but security control over confidential messages is weakened
Solution Approach 1:
The system applies local quality by assigning different security requirements to different message types and channels. Encrypted messages are marked with security level attributes that require specific channel credentials for playback. This allows the system to maintain high accessibility for regular messages while imposing strict security controls on confidential messages, resolving the contradiction between ease of operation and reliability.
Solution Approach 2:
The system implements dynamic security control by adjusting access requirements based on the message's encryption status and the channel's security level. The unified messaging system dynamically evaluates whether the current voice channel meets the security requirements for the specific message being accessed. This dynamic approach maintains user convenience for non-sensitive messages while automatically enforcing confidentiality protection for sensitive messages.
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A unified messaging system includes a unit to store a message operable to store a message sent to a user, the message having a selectable security attribute set to a one of a plurality of levels. A module associated with the unit operates to secure a voice channel used by the user to listen to the message when the selectable security level is set to a high level indicating encryption. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.