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[release/1.3.4] parmas, crypto, core, core/vm: homestead consensus protocol changes

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* change gas cost for contract creating txs
* invalidate signature with s value greater than secp256k1 N / 2
* OOG contract creation if not enough gas to store code
* new difficulty adjustment algorithm
* new DELEGATECALL op code

Conflicts:
	core/vm/environment.go
	crypto/crypto.go
	crypto/secp256k1/secp256.go
	eth/api.go
This commit is contained in:
Gustav Simonsson
2015-11-27 15:40:29 +01:00
committed by Jeffrey Wilcke
parent 300f1e2abf
commit 61404979ed
54 changed files with 25877 additions and 11223 deletions
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3
core/vm/contracts.go
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@ -93,7 +93,8 @@ func ecrecoverFunc(in []byte) []byte {
vbig := common.Bytes2Big(in[32:64])
v := byte(vbig.Uint64())
if !crypto.ValidateSignatureValues(v, r, s) {
// tighter sig s values in homestead only apply to tx sigs
if !crypto.ValidateSignatureValues(v, r, s, false) {
glog.V(logger.Debug).Infof("EC RECOVER FAIL: v, r or s value invalid")
return nil
}