Re: [Cfrg] [TLS] 3DES diediedie
"Blumenthal, Uri - 0553 - MITLL" <uri@ll.mit.edu> Thu, 01 September 2016 14:05 UTC
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From: "Blumenthal, Uri - 0553 - MITLL" <uri@ll.mit.edu>
To: Joachim Strömbergson <joachim@secworks.se>, Hilarie Orman <hilarie@purplestreak.com>
Thread-Topic: [Cfrg] [TLS] 3DES diediedie
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Date: Thu, 01 Sep 2016 13:53:00 +0000
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Subject: Re: [Cfrg] [TLS] 3DES diediedie
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"Some cents" on a single device usually turn into noticeable bucks when the number of the manufactured devices and their accumulated costs pile up. Rather obvious? Sent from my BlackBerry 10 smartphone on the Verizon Wireless 4G LTE network. Original Message From: Joachim Strömbergson Sent: Thursday, September 1, 2016 03:50 To: Hilarie Orman Cc: cfrg@irtf.org; tls@ietf.org Subject: Re: [Cfrg] [TLS] 3DES diediedie -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Aloha! Hilarie Orman wrote: > An ARM is far too much hardware to throw at "read sensor/munge > data/send data". No, they are not. The Cortex M0+ is aimed at these kinds of very simple systems that runs for many years on a single battery. Look at the STM32L0 series from ST for example. These devices can run on energy harvesting and very tiny physically and very, very cheap (ten-ish cents in high volume): http://www.st.com/content/st_com/en/products/microcontrollers/stm32-32-bit-arm-cortex-mcus/stm32l0-series.html?querycriteria=productId=SS1817 The STM32L021 has an AES-128 core. Not very fast (200+ cycles), but several times faster than SW. You can also run the AES core wile the CPU core is in power save mode. Another example is the Zero Gecko from Silicon Labs. Same price range, a huge number of power modes. And an AES core that is really fast. 50+ cycles for AES-128, which basically means 4 cycles/round (which implies 4 S-boxes) https://www.silabs.com/products/mcu/32-bit/efm32-zero-gecko/pages/efm32-zero-gecko.aspx Pre-shared key is whats easiest. But I've implemented Curve25519 for key exchange on the STM32 device and can achieve <1 sec performance with about 1 kByte RAM and 8 kByte code. I'm sure Peter Schwabe has some much better results. Yes, you can limit yourself to an 8-bit MCU and shave off some cents and a little bit of power. But for most applications I see, a Cortex M0+ meets technical and commercial requirements too. - -- Med vänlig hälsning, Yours Joachim Strömbergson - Alltid i harmonisk svängning. ======================================================================== Joachim Strömbergson Secworks AB joachim@secworks.se ======================================================================== -----BEGIN PGP SIGNATURE----- Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQIcBAEBCAAGBQJXx923AAoJEF3cfFQkIuyN4tkP+QGscSmBzUAPbamlaRqpm7sh zVwhMwhllJMdTs+HozeSbMvtw7JlO5vu+PyD/El4sxP2SAQhv1LqJFaC0nxuCJ2P I+RxISEkrxYYB2YDRGlPd3Cfm4cRrDBd/BQCPMZuAQurWxH7ptMMKIZ3hS6NuOIb gyluKMDMrUW9qFx0lrpa3yAMPHrBqlhHl1GmcUMJwoRVGOxDdc243YjNB7J/FEDh pJCzI8Dv4uyWEufr0cBv1xCiSY4eaalv25H/Cyc3rZ78Os7d52DUyuBD8IAuAkkH i32L2gK7CbrCF/3zw+Tv2aDn1ncGOiucENmQIzO99hwWwtJFC7TN59rCtoArmh5U EC0Ncq1IIbicrot+DLibHNvSWk0c15bvtg1c06UecME21SF2t8ZigF0OuYKGdeu1 a4h0dUcNUyQxUbAs9JDTXtwABvR7CMNZi3kD5Vh8NfvK7DmojPVThrQ1r/2x+6hS QnPiZcuvedjkM19y1hRchZQT23qPJQ4TrC5MvQSHnU20oW3QomPJfTAXtCctsN5s 3b+ZdWh5/EAysPpgjzzwKP0mWN3tkeSKROsh6BabMku84zerKPzCn5MwhyhUqHLD Sv453a5oK0ne5pD/b7CIPWRwK2Z6/6pFN+jWPG0SZtZTgEJjkSVPaskMd51SVSga EkqJv7VnqIa5lP5es+Is =ri48 -----END PGP SIGNATURE----- _______________________________________________ Cfrg mailing list Cfrg@irtf.org https://www.irtf.org/mailman/listinfo/cfrg
- Re: [Cfrg] [TLS] 3DES diediedie Viktor Dukhovni
- [Cfrg] 3DES diediedie Tony Arcieri
- Re: [Cfrg] 3DES diediedie Benjamin Kaduk
- Re: [Cfrg] 3DES diediedie Tony Arcieri
- Re: [Cfrg] 3DES diediedie Tony Arcieri
- Re: [Cfrg] [TLS] 3DES diediedie Stephen Farrell
- Re: [Cfrg] [TLS] 3DES diediedie Tony Arcieri
- Re: [Cfrg] [TLS] 3DES diediedie Peter Gutmann
- Re: [Cfrg] [TLS] 3DES diediedie Tony Arcieri
- Re: [Cfrg] [TLS] 3DES diediedie John Mattsson
- Re: [Cfrg] [TLS] 3DES diediedie Stephen Farrell
- Re: [Cfrg] [TLS] 3DES diediedie Hubert Kario
- Re: [Cfrg] [TLS] 3DES diediedie david wong
- Re: [Cfrg] [TLS] 3DES diediedie Eric Rescorla
- Re: [Cfrg] [TLS] 3DES diediedie Ira McDonald
- Re: [Cfrg] [TLS] 3DES diediedie Hubert Kario
- Re: [Cfrg] [TLS] 3DES diediedie Blumenthal, Uri - 0553 - MITLL
- Re: [Cfrg] [SSH] [TLS] 3DES diediedie denis bider (Bitvise)
- Re: [Cfrg] 3DES diediedie Geoffrey Keating
- Re: [Cfrg] [SSH] [TLS] 3DES diediedie Blumenthal, Uri - 0553 - MITLL
- Re: [Cfrg] [SSH] [TLS] 3DES diediedie David Jacobson
- Re: [Cfrg] [TLS] 3DES diediedie Dmitry Belyavsky
- Re: [Cfrg] [TLS] 3DES diediedie Stanislav V. Smyshlyaev
- Re: [Cfrg] [TLS] 3DES diediedie Hanno Böck
- Re: [Cfrg] [TLS] 3DES diediedie Иван Лавриков
- Re: [Cfrg] 3DES diediedie David McGrew (mcgrew)
- Re: [Cfrg] [TLS] 3DES diediedie Watson Ladd
- Re: [Cfrg] [TLS] 3DES diediedie Peter Gutmann
- Re: [Cfrg] 3DES diediedie Peter Gutmann
- Re: [Cfrg] 3DES diediedie David McGrew (mcgrew)
- Re: [Cfrg] [TLS] 3DES diediedie Karthikeyan Bhargavan
- Re: [Cfrg] 3DES diediedie Peter Gutmann
- Re: [Cfrg] [TLS] 3DES diediedie Peter Gutmann
- Re: [Cfrg] [TLS] 3DES diediedie Stephen Farrell
- Re: [Cfrg] [TLS] 3DES diediedie Peter Gutmann
- Re: [Cfrg] [TLS] 3DES diediedie Hubert Kario
- Re: [Cfrg] 3DES diediedie David McGrew (mcgrew)
- Re: [Cfrg] [TLS] 3DES diediedie Joachim Strömbergson
- Re: [Cfrg] 3DES diediedie John Mattsson
- [Cfrg] (confusing the issues) Re: [TLS] 3DES died… Rene Struik
- Re: [Cfrg] 3DES diediedie Ilari Liusvaara
- Re: [Cfrg] [TLS] (confusing the issues) Re: 3DES … Dave Garrett
- Re: [Cfrg] 3DES diediedie Jon Callas
- Re: [Cfrg] (confusing the issues) Re: [TLS] 3DES … Jon Callas
- Re: [Cfrg] 3DES diediedie Steven M. Bellovin
- Re: [Cfrg] (confusing the issues) Re: [TLS] 3DES … Rene Struik
- Re: [Cfrg] (confusing the issues) Re: [TLS] 3DES … Greg Rose
- Re: [Cfrg] 3DES diediedie Peter Gutmann
- Re: [Cfrg] 3DES diediedie Peter Gutmann
- Re: [Cfrg] 3DES diediedie David McGrew (mcgrew)
- Re: [Cfrg] 3DES diediedie Peter Gutmann
- Re: [Cfrg] [TLS] 3DES diediedie Derek Atkins
- Re: [Cfrg] 3DES diediedie Derek Atkins
- Re: [Cfrg] 3DES diediedie Hilarie Orman
- Re: [Cfrg] [TLS] 3DES diediedie Brian Sniffen
- Re: [Cfrg] [TLS] 3DES diediedie Hilarie Orman
- Re: [Cfrg] 3DES diediedie Steven M. Bellovin
- Re: [Cfrg] [TLS] 3DES diediedie Joachim Strömbergson
- Re: [Cfrg] [TLS] 3DES diediedie Blumenthal, Uri - 0553 - MITLL
- Re: [Cfrg] [TLS] 3DES diediedie Hilarie Orman
- Re: [Cfrg] [TLS] 3DES diediedie Joachim Strömbergson
- Re: [Cfrg] [TLS] 3DES diediedie Kyle Rose
- Re: [Cfrg] [TLS] 3DES diediedie Richard Hartmann
- Re: [Cfrg] 3DES diediedie Derek Atkins
- Re: [Cfrg] [TLS] 3DES diediedie Hilarie Orman
- Re: [Cfrg] [TLS] 3DES diediedie Ben Laurie
- Re: [Cfrg] [TLS] 3DES diediedie Ben Laurie
- Re: [Cfrg] [TLS] 3DES diediedie Joachim Strömbergson
- Re: [Cfrg] [TLS] 3DES diediedie Blumenthal, Uri - 0553 - MITLL
- Re: [Cfrg] [TLS] 3DES diediedie Joachim Strömbergson
- Re: [Cfrg] [TLS] 3DES diediedie Derek Atkins
- Re: [Cfrg] [TLS] 3DES diediedie Derek Atkins
- Re: [Cfrg] [TLS] 3DES diediedie Stephen Farrell
- Re: [Cfrg] [TLS] 3DES diediedie Salz, Rich
- Re: [Cfrg] [TLS] 3DES diediedie Ira McDonald
- Re: [Cfrg] [TLS] 3DES diediedie Watson Ladd
- Re: [Cfrg] [TLS] 3DES diediedie Ira McDonald
- Re: [Cfrg] [TLS] 3DES diediedie Dave Garrett
- Re: [Cfrg] [TLS] 3DES diediedie Ira McDonald
- Re: [Cfrg] [TLS] 3DES diediedie Philip Levis
- Re: [Cfrg] [TLS] 3DES diediedie Stephen Farrell
- Re: [Cfrg] [TLS] 3DES diediedie Tony Arcieri
- Re: [Cfrg] [TLS] 3DES diediedie Peter Gutmann
- Re: [Cfrg] [TLS] 3DES diediedie Joachim Strömbergson
- Re: [Cfrg] [TLS] 3DES diediedie Ilari Liusvaara
- Re: [Cfrg] [TLS] 3DES diediedie Joachim Strömbergson
- Re: [Cfrg] [TLS] 3DES diediedie Stephen Farrell
- Re: [Cfrg] [TLS] 3DES diediedie Ilari Liusvaara
- Re: [Cfrg] [TLS] 3DES diediedie Joachim Strömbergson
- Re: [Cfrg] [TLS] 3DES diediedie Joachim Strömbergson
- Re: [Cfrg] [TLS] 3DES diediedie Richard Hartmann
- Re: [Cfrg] [TLS] 3DES diediedie Peter Gutmann
- Re: [Cfrg] [TLS] 3DES diediedie Peter Gutmann
- Re: [Cfrg] [TLS] 3DES diediedie Salz, Rich
- Re: [Cfrg] [TLS] 3DES diediedie Derek Atkins
- Re: [Cfrg] [TLS] 3DES diediedie Tony Arcieri
- Re: [Cfrg] [TLS] 3DES diediedie Peter Gutmann
- Re: [Cfrg] [TLS] 3DES diediedie Stephen Farrell
- Re: [Cfrg] [TLS] 3DES diediedie Derek Atkins
- Re: [Cfrg] [TLS] 3DES diediedie Derek Atkins
- Re: [Cfrg] [TLS] 3DES diediedie Derek Atkins
- Re: [Cfrg] [TLS] 3DES diediedie Kyle Rose
- Re: [Cfrg] [TLS] 3DES diediedie Tony Arcieri
- Re: [Cfrg] [TLS] 3DES diediedie Ilari Liusvaara
- Re: [Cfrg] [TLS] 3DES diediedie Yoav Nir
- Re: [Cfrg] [TLS] 3DES diediedie Kyle Rose
- Re: [Cfrg] [TLS] 3DES diediedie denis bider (Bitvise)