🌐EnglishEnglishDeutschEspañolFrançaisItalianoPolskiPortuguêsTiếng ViệtРусскийالعربيةفارسی中文EntityQ2454939· pop 18· linked from 64 articlesHill ciphersubstitution cipher based on linear algebraWikidata factsImageHill's message protector.pngSources (1)wikidata.orgvia Wikidata · CC0Available in 18 languagesEspañolFrançaisDeutsch中文РусскийPortuguêsItalianoالعربيةCatalanCzechHebrewConnectionsencryptionEntityinvertible matrixEntityCategoriesClassical ciphers