Vida CEM swapping

Post by **vtl** » 27 Apr 2022, 06:56

gnalan wrote: 26 Apr 2022, 18:16 Also '++i' doesn't need to make a copy of 'i' first like 'i++' does.

Integer variable is not an object, C does not do copies.

gnalan wrote: 26 Apr 2022, 18:16
Code: Select all
Mine...
    if ((n & 1) ^ ((k >> i) & 1))

That 'i' should be 1.

Post by **vtl** » 27 Apr 2022, 07:08

alevol wrote: 27 Apr 2022, 06:40 How do you get ~860 pin/sec? I am getting stable 440 pins/sec using VTL's the most recent build.

There are "fast" and "slow" CEMs. You have a "slow" one.

alevol wrote: 27 Apr 2022, 06:40 I could also not compile VTL's seed-gen.c utility. I was trying to compile with devc++ and with VScode as well. It could not find dependencies.

: 55b94239eeefc.jpeg (63.86 KiB) Viewed 680 times

alevol · Post by **alevol** » 27 Apr 2022, 07:21

Thanks vtl!

vtl wrote: 27 Apr 2022, 07:08 55b94239eeefc.jpeg

haha, i thought the same. I could run the Virtual Machine. Sounds like a plan.

Post by **vtl** » 27 Apr 2022, 07:24

alevol wrote: 27 Apr 2022, 07:21 haha, i thought the same. I could run the Virtual Machine. Sounds like a plan.

I've heard that in recent windows versions they've added Linux shell or something, based on Ubuntu. You may want to try compiling it there.

alevol · Post by **alevol** » 27 Apr 2022, 07:30

I am kinda conservative Windows user running multiple Win7 laptops. I have Ubuntu experience also,
Thanks, vtl !

Post by **gnalan** » 27 Apr 2022, 09:12

vtl wrote: 27 Apr 2022, 06:56
gnalan wrote: 26 Apr 2022, 18:16
Code: Select all
Mine...
    if ((n & 1) ^ ((k >> i) & 1))
That 'i' should be 1.

Why 1? For the 64 bit seed/pin combo I want the bit to match the for loop, so that's why it's set as i and not 1. I'm not checking the same bit each time through the loop.

Post by **RickHaleParker** » 27 Apr 2022, 12:46

vtl wrote: 27 Apr 2022, 07:24 I've heard that in recent windows versions they've added Linux shell or something, based on Ubuntu.

Windows Subsystem for Linux.

alevol · Post by **alevol** » 27 Apr 2022, 13:43

vtl wrote: 27 Apr 2022, 07:24 I've heard that in recent windows versions they've added Linux shell or something, based on Ubuntu. You may want to try compiling it there.

I've created a virtual machine, installed Ubuntu there. After installing gcc, the code compiled like a charm. Now i need to understand how to use it

Post by **vtl** » 27 Apr 2022, 13:45

alevol wrote: 27 Apr 2022, 13:43 I've created a virtual machine, installed Ubuntu there. After installing gcc, the code compiled like a charm. Now i need to understand how to use it

Code: Select all

 * $ gcc -Ofast -o seed-gen seed-gen.c
 * $ ./seed-gen --seed "8f ca 96" --key "19 30 48" --pps 866

pps is pins per second for your CEM.

Post by **charlie13** » 27 Apr 2022, 14:22

SEED 9d e6 5e, PIN 00 00 ff f9 b4, KEY e2 d5 5d, 440 pins/s
SEED 2d c5 cd, PIN 00 00 ff fb 6c, KEY 03 38 68, 440 pins/s
SEED 3c 17 0e, PIN 00 00 ff fd 24, KEY 7f 45 3e, 440 pins/s
SEED b3 26 b0, PIN 00 00 ff fe dc, KEY c9 d9 42, 440 pins/s
hash collision found
SEED b6 cb 58, PIN 00 00 ff ff ff, KEY 68 4d 50, 292 pins/s
Resetting all ECUs.
CAN_HS ---> ID=000ffffe data=ff c8 00 00 00 00 00 00
CAN_LS ---> ID=000ffffe data=ff c8 00 00 00 00 00 00