Biometric Sender Verification for Cryptographic Email Binding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing email systems lack robust methods to authenticate the human sender, allowing spoofing and impersonation, which are not addressed by existing protocols focused on domain-level policies.
Innovation Solution
A biometric and cryptographic system that captures user biometric data, generates a public/private key pair, and encrypts a unique identifier with the private key, ensuring the human identity is verified through biometric authentication and cryptographic validation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If S/MIME is used to provide message authentication and confidentiality, then sender authentication capability is improved, but device complexity and ease of operation deteriorate due to certificate management complexity for end-users
Solution Approach 1:
The system performs cryptographic operations automatically without requiring user intervention for certificate management. The client device autonomously handles key generation, encryption, and verification processes, eliminating the need for users to manually manage cryptographic certificates while maintaining strong authentication capabilities
Solution Approach 2:
The patent introduces a verification token system that acts as an intermediary between the sender and recipient. The token contains cryptographic proof of identity and is automatically verified by the receiving system, eliminating the need for direct certificate management by end-users while maintaining authentication reliability
2Loss of information
If traditional email protocols (SMTP, SPF, DKIM, DMARC) are used, then domain-level policy validation is provided, but human sender authentication capability deteriorates as these protocols cannot authenticate the actual human sender
Solution Approach 1:
The patent combines domain-level policy validation with biometric authentication by integrating multiple verification layers. The system maintains SPF, DKIM, and DMARC domain validation while adding biometric-based cryptographic authentication that verifies the actual human sender, creating a unified authentication framework that addresses both domain ownership and human identity
Solution Approach 2:
The authentication system uses a composite approach combining cryptographic domain validation mechanisms with biometric verification. The verification token incorporates both domain-level cryptographic signatures and biometric authentication data, creating a multi-layered authentication structure that provides both domain policy validation and human sender verification
3Reliability
If biometric data is captured and stored during registration, then human identity verification capability is improved, but security vulnerabilities increase if biometric data is compromised
Solution Approach 1:
The patent extracts and separates biometric data handling from the main authentication flow. Biometric data is captured, processed into cryptographic templates, and stored securely during registration. During authentication, only the cryptographic templates are used, not the raw biometric data, reducing the security risk of biometric data compromise while maintaining verification capability
Solution Approach 2:
The system performs biometric template extraction and cryptographic processing during the registration phase before actual authentication occurs. This preliminary action converts raw biometric data into secure cryptographic representations that can be used for verification without exposing the original biometric information, reducing security vulnerabilities
Data Source
AI summary
A system is presented for verifying the human sender of an electronic message using biometrics and securely transmitting the verification status to recipients. The sender registers an email account and provides a biometric sample. A public/private key pair is generated to encrypt a unique account identifier. When sending a message, the user authenticates with biometrics. The account identifier is encrypted with the private key and transmitted with the email. The receiving server decrypts the identifier using the sender's public key and verifies it matches the sender address. If matched, the message is tagged as verified. The invention prevents email spoofing by binding the user's identity to their account with biometrics. Encrypted verification data prevents tampering. Recipients can trust message integrity as the expected human sender is cryptographically verified.