Comments (10)
chain code is the result of a ECDH key exchange:
- input: each party choose random number
a,b
- output:
abG
where G is the EC generator
is this what you meant ?
from kms-secp256k1.
hi,
What's the difference between abG and public key Q?
from kms-secp256k1.
And,
In the 2P-algorithm of the whilt paper, there is a symbol that its meaning was not explained. Please confirm it.
from kms-secp256k1.
If I understand you correctly, Q and abG are the same.
What symbol do you refer to?
from kms-secp256k1.
I dont't think so. Because abG is chain code that is used for all key derivations. So the chain code abG cann't be opened. However the pubilc key Q can be opened that is used for Verifying the signature of the transaction. And what do you think about it ? Thanks
from kms-secp256k1.
If the chain code abG is opened everyone could deduce all keys. Then assets eof blockchain's wallets is unsafe.
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I will tell you the symbol I refer to because formulas cannot be edited on Git
from kms-secp256k1.
right right, sorry for misleading you.
Q
the public key and cc= abG
have the same structure but different meaning.
cc
is computed using diffie helman key exchange and we don't really care about the a
and b
, cc
is used for key generation, known to both parties and even if it goes public an attacker will only be able to derive public keys and not compromise the secret keys.
Q
is a specific public key that in our case is the result of multiplicative secret sharing
from kms-secp256k1.
from kms-secp256k1.
no problem.
Can you be more specific about your question please?
what vector of indices are you referring to? maybe put a link to the code?
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Related Issues (17)
- re-license HOT 1
- implement serialize and deserialise
- generate MasterKeys in poc.rs example code
- Refactor all local DH-key exchanges to use Curv dh-ke
- add paillier key rotation to ecdsa HOT 1
- redundant code in 2 party schnorr tests
- Move Ser-Des from cryptographic libraries to here
- Making Party1 MasterKey "private" field, visibility public HOT 3
- linking with `link.exe` failed: exit code: 1181 HOT 6
- HD Wallet - slight differences between ECDSA and Schnorr HOT 2
- Allow the user to define the library search path for gmp.lib HOT 1
- Add signing interface to kms HOT 1
- code review for ManagementSystem trait
- rename project to kms[secp256k1] HOT 2
- child key derivation - unnecessary code duplication. HOT 2
- Add option to use predefined scalar for secret share (first message) for party1 HOT 2
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