HISTORICAL SOURCE RECORD / NOT ORIGINAL BODY TEXT
Source metadata and a new reading annotation. Captured wording is not reproduced as an original article here.
HISTORICAL SOURCE CATALOGUE. The visible annotation is new editorial text, not the captured article body. A mirror’s printed date, an external publisher’s original date and an archive capture date are different facts. External publication dates and current operational outcomes are not inferred. Historical product, security, legal and market claims are not adopted as independently verified findings or current guidance.
The IBM source link identifies a broad historical cryptography overview with a commercial closing section. This catalogue does not repeat its historical narrative or vendor recommendations. The companion learning question is functional: hashing, encryption and signatures solve different problems, and an application’s interface should not blur those distinctions.
The external address is recorded as provenance, not a claim that its present content or availability has been verified. Original primary publication dates are not inferred from mirror labels or URL paths. Source bodies, photographs, advertisements and author biographies are not republished.