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package verify | |
import ( | |
"testing" | |
"github.com/ethereum/go-ethereum/accounts" | |
"github.com/ethereum/go-ethereum/common" | |
"github.com/ethereum/go-ethereum/common/hexutil" | |
"github.com/ethereum/go-ethereum/crypto" | |
"github.com/stretchr/testify/assert" | |
) | |
func VerifySig(from, sigHex string, msg []byte) bool { | |
sig, err := hexutil.Decode(sigHex) | |
if err != nil { | |
return false | |
} | |
msg = accounts.TextHash(msg) | |
sig[crypto.RecoveryIDOffset] -= 27 | |
pub, err := crypto.SigToPub(msg, sig) | |
if err != nil { | |
return false | |
} | |
addr := crypto.PubkeyToAddress(*pub) | |
givenAddr := common.HexToAddress(from) | |
return addr == givenAddr | |
} | |
func TestVerifySig(t *testing.T) { | |
from := "0x925a0ffacd6f5336d07ad01bef4717cb67064c98" | |
sigHex := "0xdce77c911b3b4062be94110f392ffc040cb43600fad3b8483319fb9e7fa6241e14321efa7b7865d4841548f27be41124ec57ecbb5daf1bf30571e629d445c8511b" | |
msg := []byte("0x8c386d0f0125c77139c8") | |
assert.True(t, VerifySig(from, sigHex, msg)) | |
} |
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