EntityQ176481· pop 5· linked from 80 articlescipher diskSign in to savetool to encrypt and decrypt messagesConnectionsencryptionEntityRedEntitySecure channelEntityAmerican Civil WarConceptcryptocurrencyEntitycryptographyEntityLeon Battista AlbertiEntityransomwareEntityEnigmaEntityhash functionEntitypublic-key cryptographyEntitydigital signatureEntitysteganographyEntitycryptanalysisEntityUnionEntitysymmetric-key algorithmEntitycipherEntitykeyEntityquantum cryptographyEntitysubstitution cipherEntityCategoriesEncryption devices