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Tony Zhao

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Screen Name: Tony Zhao

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Member	Action	Date
Tony Zhao	Replied to Wrong 5-digit PIN during S2 inclusion @TonyQ: I noticed the word 'may'. Wondering why "KEX Fail" frame could NOT being sent out? Or, under what circumstances such a frame could be sent out 100%? Is there a bug or something? We tried hard to try to produce such a frame, but failed. Failure in producing such a frame results in UX degradation (4 minutes just too long). Show more	60 days ago
Tony Zhao	Updated to Z-Wave 700: OTA of End-Device @DrZWave: Well... Signing OTA image using an AES key does not make sense to me. Signing and authentication verification should be done by ECC-P256 key pairs. What is the boot sequence of encryption and firmware signing? The Z-Wave chip would use the AES key to decrypt the image first and then verify authentication? Or the other way round? Show more	Aug 06 2020, 8:27 AM
Tony Zhao	Replied to Z-Wave 700: OTA of End-Device @DrZWave: Well... Signing OTA image using an AES key does not make sense to me. Signing and authentication verification should be done by ECC-P256 key pairs. What is the sequence of encryption and firmware signing? The Z-Wave chip would use the AES key to decrypt the image first and then verify authentication? Or the other way round? Show more	Aug 06 2020, 8:26 AM
Tony Zhao	Replied to Z-Wave 700: OTA of End-Device Wondering what does the AES key do? Encryption for what? Thanks. Show more	Aug 04 2020, 11:05 AM
Tony Zhao	Selected an answer for Does 500 series support secure boot and firmware signing? What about 700 series? No, I don't think you can customize the Z-Wave bootloader. If you have specific request about bootloader in next generation Z-Wave products, I'd recommend you to either contact local sales or raise a support ticket. Show more	Mar 25 2020, 9:01 AM
Tony Zhao	Updated to Does 500 series support secure boot and firmware signing? What about 700 series? Thanks @TonyQ. If I interpret correctly, secure boot feature is not supported in 700 series. 1. Am I able to customize the bootloader to run my version of secure boot? 2. Also, what is the plan for official bootloader support as Gecko Series 2 does for Zigbee? Show more	Mar 24 2020, 7:16 AM
Tony Zhao	Updated to Does 500 series support secure boot and firmware signing? What about 700 series? Thanks @TonyQ. If I interpret correctly, secure boot feature is not supported in 700 series. 1. Am I able to customize the bootloader to run my version of secure boot? 2. Also, what is the plan for official bootloader support as Gecko Series 2 does for Zigbee? Show more	Mar 24 2020, 7:11 AM
Tony Zhao	Replied to Does 500 series support secure boot and firmware signing? What about 700 series? Thanks @TonyQ. If I interpret correctly, secure boot feature is not supported in 700 series. Am I able to customize the bootloader to run my version of secure boot? Show more	Mar 24 2020, 7:07 AM
Tony Zhao	Posted Does 500 series support secure boot and firmware signing? What about 700 series? on Z-Wave Wireless Forum Hi there, We were evaluating secure boot and firmware signing features on our legacy 500 products, but failed to find any evidence. Could someone clarify that such features are not supported on 500 series? Also, does 700 support such security features? Thanks, and look forward to your reply. Show more	Mar 23 2020, 5:13 AM

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