- The discipline concerned with communication security (eg, confidentiality of messages, integrity of messages, sender authentication, non-repudiation of messages, and many other related issues).
- 1658:, w:Thomas Browne, Sir Thomas Browne (first use in English),
- : We might abate...the strange of Gaffarell in his Starrie Booke of Heaven.
Etymology: From the Greek words kryptós (hidden) and gríphein (to write)
- Dutch: cryptografie , geheimschrift
- French: cryptographie
- German: Kryptographie
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