Hotfix s < secpk1n requirement
Hotfix s < secpk1n requirement

karlfloersch/pyethereum,karlfloersch/pyethereum,ethereum/pyethereum,pipermerriam/pyethereum,ckeenan/pyethereum,pipermerriam/pyethereum,ethereum/pyethereum,shahankhatch/pyethereum,shahankhatch/pyethereum