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searchable encryption

3 articles · Page 1 of 1
Lobster Programming
Lobster Programming
Sep 14, 2026 · Databases

Three-Field Schema for Encrypted Phone Number Queries by Last Four Digits

The article analyzes flawed approaches for querying encrypted phone numbers by last four digits — memory decryption, ciphertext fuzzy matching, partial encryption, and mapping tables — and presents a three-field design (full ciphertext, masked display, indexed last-four plaintext) that ensures compliance, security, and millisecond query performance at million-user scale.

AES-256Database IndexingSM4
0 likes · 6 min read
Three-Field Schema for Encrypted Phone Number Queries by Last Four Digits
21CTO
21CTO
Dec 25, 2022 · Fundamentals

How WebAssembly, Searchable Encryption, and Keyless Auth Will Redefine 2023 Development

The article surveys 2023 developer trends, highlighting WebAssembly’s performance boost, the rise of searchable encryption and key‑based authentication, shifting market pressures, and how companies are investing in tools that improve productivity, security, and code quality across the software lifecycle.

WebAssemblydeveloper trendskey authentication
0 likes · 13 min read
How WebAssembly, Searchable Encryption, and Keyless Auth Will Redefine 2023 Development
21CTO
21CTO
Jun 6, 2017 · Information Security

How to Search Encrypted Database Fields Securely with Blind Indexes

This article explains why deterministic encryption like ECB is unsafe for sensitive data, introduces nondeterministic authenticated encryption, and provides a practical blind‑index technique with PHP and SQL examples for searchable encryption of fields such as Social Security numbers.

Database SecurityPHPSQL
0 likes · 14 min read
How to Search Encrypted Database Fields Securely with Blind Indexes