EntityQ512063· pop 15· linked from 127 articlesOff-the-Record MessagingSign in to savecryptographic protocol for instant messaging providing forward secrecy and malleable encryption using 128-bit AES, 1536-bit Diffie–Hellman, and SHA-1ConnectionsencryptionEntitysoftware libraryEntityCentericqEntityEric BrewerEntityYouTubeConceptoperating systemEntityMicrosoft WindowsEntityInternational Standard Book NumberEntityQ15777EntityAndroidEntityWhatsAppConceptfree softwareEntityWayback MachineEntitymacOSEntitypublic domainEntityiOSEntitydigital object identifierEntityQ48413EntityGNU General Public LicenseEntityvirtual private networkEntityCategoriesCross-platform free softwareCryptographic protocolsCryptographic softwareFree security softwareInstant messagingInternet privacy softwareXMPP