using dcrec/secp256k1 with ethereum keys

[fxfactorial]

using dcrec/secp256k1 with ethereum keys

[chappjc]

Glad that worked. Be sure to use secp256k1/v4 module though.

[chappjc]

The following code is not in production yet, but perhaps this is of help: https://github.com/decred/dcrdex/blob/0c75bd4ef78a0cde38eb558dd20b1ffe2a655683/client/asset/eth/eth.go#L828-L844

If SignCompact was used to make the signature referencing the uncompressed public keys (the false bool), as would be done with ethereum's crypto.Sign, I believe it should work.

[davecgh]

I'll take a look at this here in a bit. If you don't mind answering the following, it should be enough to get the ball rolling:

1. Which version of the module are you using (e.g github.com/decred/dcrd/dcrec/[email protected], @v4.0.1, etc)?
2. Would you provide a couple of sig/hash/pubkey triples that are not producing the expected results?

[fxfactorial]

@chappjc thank you, will look

@davecgh thank you, go get just picked it up as it, so in my .mod, .sum have

go.mod
	github.com/decred/dcrd/dcrec/secp256k1 v1.0.3 // indirect
	github.com/decred/dcrd/dcrec/secp256k1/v2 v2.0.0 // indirect

go.sum
github.com/decred/dcrd/chaincfg/chainhash v1.0.2/go.mod h1:BpbrGgrPTr3YJYRN3Bm+D9NuaFd+zGyNeIKgrhCXK60=
github.com/decred/dcrd/crypto/blake256 v1.0.0/go.mod h1:sQl2p6Y26YV+ZOcSTP6thNdn47hh8kt6rqSlvmrXFAc=
github.com/decred/dcrd/dcrec/secp256k1 v1.0.3 h1:u4XpHqlscRolxPxt2YHrFBDVZYY1AK+KMV02H1r+HmU=
github.com/decred/dcrd/dcrec/secp256k1 v1.0.3/go.mod h1:eCL8H4MYYjRvsw2TuANvEOcVMFbmi9rt/6hJUWU5wlU=
github.com/decred/dcrd/dcrec/secp256k1/v2 v2.0.0 h1:3GIJYXQDAKpLEFriGFN8SbSffak10UXHGdIcFaMPykY=
github.com/decred/dcrd/dcrec/secp256k1/v2 v2.0.0/go.mod h1:3s92l0paYkZoIHuj4X93Teg/HB7eGM9x/zokGw+u4mY=

sure will collect some samples and post another comment with them

(thank you quick replies)

[chappjc]

Also, are you aware that go-ethereum/crypto has a no-cgo version if you build with CGO_ENABLED=0?

[fxfactorial]

Also, are you aware that go-ethereum/crypto has a no-cgo version if you build with CGO_ENABLED=0?

No, wasn't aware thank you. Also, I tried your code sample and it works great. Thank you, can close issue