Small Message Encryption using SHA Devices

Abstract:ThisdocumentshowshowMaxim'sDS1963SSHAiButton®canbeusedwithsmallmicrocontrollerstoprovidestrongencryptionandauthenticationofcontrolandstatusmessages,telemetry,orsensitiveprocesscontrolinformation.Forlowcostandlowoverhead,itprovidesnonvolatilememory,securesecretstorage,secretsharingandrotation,fastSHA-1padgeneration,andagloballyuniqueserialnumber.Asimplemicrocontrollerneedsonlyprovideasingleportpinandafewdozenlinesofcodetoattainqualitycryptographicsecurity.Maxim>AppNotes>1-WireDevicesiButtonSecurityandAuthenticationKeywords:cryptography,encryption,SHA,SHA-1,microcontroller,smallmessage,MAC,hash,one-way,authentication,security,randomFeb04,2002number,randomnumbers,pad,secret,coprocessor,rotation,DS1963S,DS1961S,DS2432APPLICATIONNOTE150SmallMessageEncryptionusingSHADevicesAbstract:ThisdocumentshowshowMaxim'sDS1963SSHAiButtoncanbeusedwithsmallmicrocontrollerstoprovidestrongencryptionandauthenticationofcontrolandstatusmessages,telemetry,orsensitiveprocesscontrolinformation.Forlowcostandlowoverhead,itprovidesnonvolatilememory,securesecretstorage,secretsharingandrotation,fastSHA-1padgeneration,andagloballyuniqueserialnumber.Asimplemic