-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Aloha!
Hilarie Orman wrote: > For devices you refer to, how many AES blocks can they encrypt on a > AA battery, assuming that the usage is to encrypt one block every 10 > minutes? That is actually a very interesting, but hard question to answer. Will the MCU be doing anything else in between? What kind of I/O will the resulting block be sent over? The AES core itself can be switched off from power on a single cycle What I have seen is projects where one of those devices are being used to send data at about that rate (AES-CTR encrypted) powered by a small cell battery with a lifespan of at least 8 years. It does very little in between though. Rough calculation gives 420k events, but each message generated by an event is larger than a single AES block. One thing to note is that 8-bit MCUs are commonly manufactured in older chip processes with bigger transistors and power hungry I/Os, less power modes than these newer ARM devices. - -- Med vänlig hälsning, Yours Joachim Strömbergson - Alltid i harmonisk svängning. ======================================================================== Joachim Strömbergson Secworks AB joac...@secworks.se ======================================================================== -----BEGIN PGP SIGNATURE----- Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQIcBAEBCAAGBQJXyGwDAAoJEF3cfFQkIuyNdb0P/RsNpZcOvKw7WhWFVdCuMbsR e2ay5OtS/Jsi2Mt4ZmFpgyhEvaLpe2kmRMTKHvhZPE4TEpARXyR3eNcV/ShdzGFK mX2mNHpFKkTWdMc5aY4yX7/DGlAxWkVcL/Nhndp+dmU+DFjeg4cB9LcB4Kxicvaf pj2CCZq8AmHlXtKYW6lhp78RSGJPZzTo6ay1G7eFugOTU8MUywCFP4vvDMcAOxN0 q+xPW3oIAnNhWdiKemitrNfv7L0Vl2U/Al4DCVYHQzv2PqgJoLY+XayoZCX6Wn1p UmWJkGEDId5MTIxWi312HRLSJA+4hURI2c4BR9HnnQszS+w1YYETzINahCrnaGpj Dbdt63LQheGsgqXFVCbbWJUoVZxQMRoR7eSEuPWWiEOMLJFolMe0KE019t1KuhYI aNVqjEOTxAbyu+vvgXKzqfmESeu/IOSpAXBhYWL8Ce65NeMVAsSObCI8ciFz3Yws BLZjIbPnutVMMy/E4L03Hr6Fx63MJYseMwrNF493EVBbY33zNYNl4Wm6lALpDv3M xDAMttCWclk+qy6uqdU37knUsgaHZoLsfoz6OSz+JikzNmJwDZMrtHlfd96r//n1 /yXpW6UrbqdweZoturpmLfrb54rhVgZ8P3VVE1S8BOUx632tF2ZiDUjii2HgRT2V tFbXo7nBj8vWRuFB6Qqy =z6RU -----END PGP SIGNATURE----- _______________________________________________ TLS mailing list TLS@ietf.org https://www.ietf.org/mailman/listinfo/tls
