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Hacking the HDO1k/HDO4k Rigol 12 bit scope

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the Chris:
HW 2, 148 bytes key.data


--- Quote from: thm_w on January 04, 2024, 01:39:03 am ---Maybe can tell from lsusb:
--- End quote ---

Here is mine:


--- Code: ---Bus 003 Device 002: ID 0451:8027   (Texas Instruments USB 3.0 2-Port Hub)
Bus 004 Device 002: ID 0451:8025   (Texas Instruments USB 3.0 2-Port Hub)
Bus 003 Device 001: ID 1d6b:0002   (root hub 2.0)
Bus 004 Device 001: ID 1d6b:0003   (root hub 2.0)
Bus 003 Device 003: ID 046d:c077   (my attached Logitech Mouse)

--- End code ---

So they changed the USB 3.0 hub, it seems.


--- Quote from: thm_w on January 04, 2024, 01:39:03 am ---rk3399_rigol:/ $ lsmod
--- End quote ---


--- Code: ---Module                  Size  Used by
usbtmc_dev             41918  2
libcomposite           60749  1 usbtmc_dev
usb_gpib               21937  0
afe_rms_gpio            2864  0
dac_gpio                3724  1
pwm_fan                 8647  2
beeper_gpio             3684  1
focaltech_ts           75050  0
ilitek_ts              37389  0
spi2afe_gpio            5530  1
xdma                   99943  2
pcie_rockchip          20793  0
spi2pll_gpio            5142  1
fpga_gpio               3859  0
hdcode_gpio             2304  0
motorcomm              17303  0
...
--- End code ---

voltsandjolts:
I briefly have access to two units:

DHO1074  HWv2  Cal'd OCT22 148 byte key

DHO1074  HWv2  Cal'd JAN23 388 byte key

Also including reports from others here, it seems they increased key size to 388 bytes around January 2023 and it's not related to hardware version.

ebastler:

--- Quote from: zrq on December 29, 2023, 09:18:56 pm ---Yes (20 M, 250 M and full, after doing patch 3) and yes [50 Ohm inputs work] (but with the amplitude problem).

--- End quote ---

Hopefully I did not derail the thread with my unexpected "no key.data, and the relevant FRAM content is 388 bytes long" adventure...

I am curious -- has anybody explored the apk-based hack any further, and been able to figure out what stands in the way of fully calibrated 50 Ohm inputs?

tv84:
AFAIR, it's totally irrelevant the key size because the licensing algorithm is totally messed up.

As such, as long as the key string has sufficient bytes to be used as an 128-bit AES key, you're good to go. Of course the sizes you report are perfectly OK for that.

I will repeat this for the n-th time  :horse: :horse:: the licensing is based on ECC asym crypto but implemented as AES sym crypto...  :palm: :palm: :palm: That's why any script kid can generate these licenses.

ixtern:
Hi
I am new here.
Got my DHO1074 few days ago. It came with 00.02.04 firmware and hardware version 2. I have updated it to the latest 00.02.12.

Next I've upgraded it according to the instructions from here. Upgrade was successful although adb pull command for me must be little different:
As "./adb pull /rigol/data/Key.data" returned: "adb: error: failed to get feature set: more than one device/emulator\"
I used "./adb -s 192.168.1.22:55555 pull /rigol/data/Key.data" where 192.168.1.22 is the IP address of my scope.

Screenshot was taken with UltraSigma software.

Best regards for all.

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