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p2p/enr: using btcec library for signing and verifying of signature, instead of crypto

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This commit is contained in:
Anton Evangelatov 2017-12-01 18:40:16 +01:00 committed by Felix Lange
parent 992c80eb3d
commit 893152e52b
1 changed files with 6 additions and 5 deletions
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11
p2p/enr/enr.go
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@ -222,10 +222,12 @@ func (r *Record) signAndEncode(privkey *ecdsa.PrivateKey) error {
digest := crypto.Keccak256Hash(sigcontent) digest := crypto.Keccak256Hash(sigcontent)
r.signature, err = crypto.Sign(digest.Bytes(), privkey) key := btcec.PrivateKey(*privkey)
signature, err := key.Sign(digest.Bytes())
if err != nil { if err != nil {
return err return err
} }
r.signature = signature.Serialize()
blob, err := rlp.EncodeToBytes(r.signature) blob, err := rlp.EncodeToBytes(r.signature)
if err != nil { if err != nil {
@ -263,7 +265,6 @@ func (r *Record) verifySignature() error {
if err != nil { if err != nil {
return err return err
} }
pubkey1 := pk.SerializeUncompressed()
// get publickey from message and signature // get publickey from message and signature
sigcontent, err := r.serialisedContent() sigcontent, err := r.serialisedContent()
@ -273,13 +274,13 @@ func (r *Record) verifySignature() error {
digest := crypto.Keccak256Hash(sigcontent) digest := crypto.Keccak256Hash(sigcontent)
pubkey2, err := crypto.Ecrecover(digest.Bytes(), r.signature) sign, err := btcec.ParseSignature(r.signature, btcec.S256())
if err != nil { if err != nil {
return err return err
} }
if bytes.Compare(pubkey1, pubkey2) != 0 { if !sign.Verify(digest.Bytes(), pk) {
return errors.New("public key mismatch") return errors.New("signature is not valid")
} }
return nil return nil