Fix allows ecc keys in channel negotiation
Fix allows ecc keys in channel negotiation

tmroeder/cloudproxy,jlmucb/cloudproxy,tmroeder/cloudproxy,jethrogb/cloudproxy,tmroeder/cloudproxy,tmroeder/cloudproxy,jethrogb/cloudproxy,jethrogb/cloudproxy,jethrogb/cloudproxy,tmroeder/cloudproxy,jlmucb/cloudproxy,jethrogb/cloudproxy,jlmucb/cloudproxy,jlmucb/cloudproxy,jlmucb/cloudproxy