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#cryptography

3 posts

WindowsDeep Dive August 26, 2026 5 min read

Windows DPAPI: Protecting Secrets with User and Machine Context

How Windows DPAPI binds encrypted blobs to user or machine context, adds entropy and integrity, and fails when applications misunderstand its boundary.

#windows#dpapi#cryptography

macOSDeep Dive August 9, 2026 3 min read

Secure Enclave Keys on macOS: Keychain Access Control Without Exportable Private Material

How Secure Enclave-backed macOS keys combine Keychain references, access-control policy, signatures, device binding, error handling, and recovery design.

#macos#secure-enclave#keychain

Tech HistoryDeep Dive August 9, 2026 3 min read

Public-Key Cryptography: From Classified Prehistory to Diffie-Hellman and RSA

A careful chronology of public-key ideas at GCHQ, Diffie and Hellman's 1976 publication, Merkle's contribution, RSA, signatures, and attribution.

#technology-history#cryptography#diffie-hellman