Join IRC channel about a Japanese rhythm game, wind up talking about the diffie-hellman key exchange on 8-bit microcontrollers.
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Replying to @marcan42
now I'm curious; under what circumstances does it make sense to do DH on an 8-bit MCU?
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Replying to @11rcombs
Same circumstances as anywhere else. If you need secure key exchange.
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Replying to @marcan42
I guess a lot of the time I end up asking "why use an 8-bit micro when you could have an M0"
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Replying to @11rcombs
We weren't picking micros, just talking about DH performance ;)
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Also, as far as I know, most smart card class secure elements are still 8-bit MCUs.
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Replying to @marcan42
But you don't actually program them in assembly, they run JVMs, right ?
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Replying to @Mc_Tedson
Well they *can* run JavaCard (which is a very, very special and cut-down JVM). They can also run raw code.
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Replying to @marcan42
I did mess with some Schlumberger Java card, but there was no way to load raw code, and the crypto in java was terribly slow.
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I mean not all smart cards are JavaCards. Some are programmed in native code.
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