# Cryptography ## Identification The practice of protecting information and establishing integrity, authenticity, or confidentiality through mathematical techniques. The page combines ciphers, a probable miscopy of RSA, identifiers, currency, and infrastructure. ## Notebook evidence - [[Scanned_20260730-1946|Scanned_20260730-1946]], PDF page 13. ## Relationships and evidentiary boundary [[RSA cryptosystem]] · [[Universally Unique Identifier]] · [[Blockchain]]. The notebook occurrence records research context and page-level proximity. It does not by itself establish ownership, deployment, compromise, coordination, or present-day status.