zekik64
commented
4 years ago @Philamericus - Thanks for getting back to me at https://github.com/unbound-tech/blockchain-crypto-mpc/issues/8
I solved this problem a few months ago, so I'm going to close this issue to avoid you wasting any time on it!
Hi,
I've followed the instructions posted at https://github.com/unbound-tech/blockchain-crypto-mpc/issues/8 and can successfully run the python demo, so thank you for posting them. However, I'm trying to figure out what the public key is from one of the derived key shares. I can see that there is a function named getPublic() which I have called. This returns me the following data if I do a print:
b'0V0\x10\x06\x07*\x86H\xce=\x02\x01\x06\x05+\x81\x04\x00\n\x03B\x00\x04\x18\xe1Dn)\xa9G\xc6\xf3\x8b\xd1\xa2"\xfc]\xb0!\xe1Y\xd3\xcd\x8b\t!S\x17\x81\xe0O\xd1\x1a\xc9vA\xb1\xc4^\xb4\x93\x9f|\xf0\x1at\x85r\xc3\xd4\x95'\xc8u\x0e\x84\x83\n\xf0\x0f\xfa\xf1\xf0\xdc\x16\xc9'
If I call .encode("hex") on this data I get:
'3056301006072a8648ce3d020106052b8104000a0342000418e1446e29a947c6f38bd1a222fc5db021e159d3cd8b0921531781e04fd11ac97641b1c45eb4939f7cf01a748572c3d49527c8750e84830af00ffaf1f0dc16c9'
Is what I'm doing correct? I've tried to use the public key to verify a signature generated from my keyshares using an online tool (https://kjur.github.io/jsrsasign/sample/sample-ecdsa.html) and it hasn't worked (which would suggest my public key is wrong)
Any help would be greatly appreciated.
Thanks, Zeki