Conversation Recording Fragment Encryption for Tamper-Proof Records
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Solution Overview
Problem
Existing systems for recording and storing conversations lack robust security, as they often use the same encryption key for audio recordings, making them vulnerable to fraud and data integrity issues, especially in financial services where transparency and security are critical.
Innovation Solution
A method that generates a secure record of conversations by fragmenting the recording into unique sections, each encrypted with a different key, allowing only decryption of individual fragments without compromising the entire recording, and transmitting these fragments to a remote server for secure storage while ensuring network efficiency and resilience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the same encryption key is used for one audio recording, then the encryption process is simple and fast, but the security is compromised as the entire recording can be decrypted if the key is hacked
Solution Approach 1:
The audio recording is divided into multiple fragments, and each fragment is encrypted with a unique encryption key. This segmentation approach ensures that compromising one encryption key does not expose the entire recording, as only the corresponding fragment can be decrypted. The system maintains security while managing encryption complexity through automated key generation and assignment for each fragment.
2Productivity
If audio recording is streamed directly from client device to server, then the transmission is efficient, but the risk of data breach during transmission increases
Solution Approach 1:
The audio recording is fragmented and encrypted with unique keys before transmission begins. This preliminary encryption ensures that even if data is intercepted during transmission, the fragments remain insecure without their specific decryption keys. The system performs the segmentation and encryption actions in advance, before the data leaves the client device, thereby maintaining transmission efficiency while significantly reducing data breach risk.
3Loss of time
If the entire audio recording is transmitted after completion, then all data can be sent in one batch, but the time until the entire recording is available at the server is much longer
Solution Approach 1:
The system transmits audio fragments continuously as they are recorded and encrypted, rather than waiting for the entire recording to complete. This continuous transmission approach maintains useful action throughout the recording process, significantly reducing the time until the recording is available at the server. The fragmented structure allows parallel processing of recording, encryption, and transmission operations, maintaining efficiency while enabling earlier availability of data.
4Reliability
If encryption is performed on the client device, then security is improved, but the processing load on the client device increases
Solution Approach 1:
By segmenting the audio recording into smaller fragments, the encryption process is divided into multiple smaller tasks that can be processed more efficiently on the client device. Each fragment is encrypted independently with a unique key, distributing the computational load across multiple smaller operations rather than one large encryption task. This segmentation reduces the peak processing load and energy consumption on the client device while maintaining strong security through unique encryption for each fragment.
Data Source
AI summary
A method is provided for generating a tamper-proof record of a conversation recorded using a recording device. During or after the recording, successive sections, chunks or other form of fragments of the audio recording are sent continuously or intermittently to a secure remote server. The successive fragments are automatically encrypted and stored securely on the recording device until a network connection is available.