CISCO MODULE SIGNATURE Information

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palashgoyal
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CISCO MODULE SIGNATURE Information

Postby palashgoyal » Tue Feb 15, 2022 5:46 pm

Cisco original SFP contains a signature and is unique for every serial number. Cisco switch checks the signature to detect original compatible transceiver.
I have also noticed that the Cisco SFP bytes 96 to 127 have different signature encoding on each module. Does this affect the SFP from working properly?
The signature become unequal the serial number when you make changes in the code field such as Vendor name, Serial number and etc. You have to update the signature after changes to make the code compatible with Cisco.
Does anyone know how to generate cisco signature for any information changed to original code, please share your thoughts, Thanks

Best,
Palash Goyal

thankfly
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Re: CISCO MODULE SIGNATURE Information

Postby thankfly » Wed Feb 16, 2022 10:13 am

Yes, Cisco needs a signature for every serial number. and it requires Vendor name, Serial number and Date to generate a special signature.

palashgoyal
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Re: CISCO MODULE SIGNATURE Information

Postby palashgoyal » Wed Feb 16, 2022 4:50 pm

Hi, thanks for your quick response
Are we capable of generating cisco signature for any changes made in serial no, vendor information, if so, how do I generate it?
if not, what is the possible solution to it? Please let me know

Best,
Palash Goyal

thankfly
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Re: CISCO MODULE SIGNATURE Information

Postby thankfly » Thu Feb 17, 2022 2:47 am

Yes, you can generate signature for any serial No with the correct encryption method.
Sorry for cannot share this encryption.
You can contact me in private.

juho
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Joined: Wed Dec 28, 2022 7:10 pm

Re: CISCO MODULE SIGNATURE Information

Postby juho » Wed Dec 28, 2022 7:13 pm

thankfly wrote:Yes, you can generate signature for any serial No with the correct encryption method.
Sorry for cannot share this encryption.
You can contact me in private.


Do you have this signature method available?

thankfly
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Re: CISCO MODULE SIGNATURE Information

Postby thankfly » Fri Dec 30, 2022 4:31 am

juho wrote:
thankfly wrote:Yes, you can generate signature for any serial No with the correct encryption method.
Sorry for cannot share this encryption.
You can contact me in private.


Do you have this signature method available?

I have, I can provide you some bin files if you need.

semperdi
Posts: 1
Joined: Tue Jan 31, 2023 2:01 pm

Re: CISCO MODULE SIGNATURE Information

Postby semperdi » Tue Jan 31, 2023 2:09 pm

Hallo
I would be also interested on generating signature for 3rd party sfp
Can you share the generator or information how to calculate the signature
thanks
dieter


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