2 results about "Pass the hash" patented technology

A system and method for zero-knowledge social graph management with session-revealed identities is disclosed. The system is configured for receiving registration requests comprising user communication addresses. The system is further configured to generate cryptographic hashes of communication addresses without storing plaintext addresses. The system is further configured to generate asymmetric key pairs with private keys stored exclusively on user devices. The system is further configured to generate encrypted identity packets containing personally identifiable information encrypted with recipient public keys and transmit connection requests after verifying target existence through hash comparison. The system is further configured to enable recipient-controlled decryption revealing requester identities only when recipients review requests. The system is further configured to generate real-time social connection hashes from communication address hashes and compare them with stored hashes to verify connections without identity exposure, providing zero-knowledge proof of connection.

The application relates to the field of cloud database storage encryption, and discloses a cloud database sharding encryption system for cross-border transactions, which comprises a receiving module that acquires transaction data and jurisdiction constraint tags; a logical mapping module that analyzes the tags to determine logical storage coordinates and extracts storage offset parameters from physical storage nodes; a key derivation module that fuses the coordinates, parameters and root key seeds to generate an encryption key through hash operation; and a storage routing module that routes the ciphertext sharding to the physical storage nodes and writes in. The application limits the key derivation factor by using the storage offset parameters, so that the confidentiality state and the physical addressing characteristics form a causal closed loop; on the premise of not introducing external clock synchronization overhead, the encryption parameters and the storage physical state are deeply coupled, the risk of key collision caused by network clock drift is effectively avoided, and the cross-border distributed storage security is improved.