diff options
| author | Gustav Simonsson <gustav.simonsson@gmail.com> | 2015-11-27 22:40:29 +0800 |
|---|---|---|
| committer | Jeffrey Wilcke <geffobscura@gmail.com> | 2016-02-18 17:08:11 +0800 |
| commit | 371871d685d54b916aef28de689d6f0af7822083 (patch) | |
| tree | e704b02ba2ffd2d1164001885fba15106b0f7d94 /core/vm/contracts.go | |
| parent | aa36a6ae4f24f07e2c470a21c93ff37ad5861982 (diff) | |
| download | go-tangerine-371871d685d54b916aef28de689d6f0af7822083.tar.gz go-tangerine-371871d685d54b916aef28de689d6f0af7822083.tar.zst go-tangerine-371871d685d54b916aef28de689d6f0af7822083.zip | |
parmas, crypto, core, core/vm: homestead consensus protocol changes
* 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
Diffstat (limited to 'core/vm/contracts.go')
| -rw-r--r-- | core/vm/contracts.go | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/core/vm/contracts.go b/core/vm/contracts.go index 22cb9eab2..f204432a2 100644 --- a/core/vm/contracts.go +++ b/core/vm/contracts.go @@ -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 } |