{"action":"opened","issue":{"url":"https://api.github.com/repos/ElementsProject/lightning/issues/7","labels_url":"https://api.github.com/repos/ElementsProject/lightning/issues/7/labels{/name}","comments_url":"https://api.github.com/repos/ElementsProject/lightning/issues/7/comments","events_url":"https://api.github.com/repos/ElementsProject/lightning/issues/7/events","html_url":"https://github.com/ElementsProject/lightning/issues/7","id":109214316,"number":7,"title":"Signature checking is too weak","user":{"login":"rustyrussell","id":775844,"avatar_url":"https://avatars.githubusercontent.com/u/775844?v=3","gravatar_id":"","url":"https://api.github.com/users/rustyrussell","html_url":"https://github.com/rustyrussell","followers_url":"https://api.github.com/users/rustyrussell/followers","following_url":"https://api.github.com/users/rustyrussell/following{/other_user}","gists_url":"https://api.github.com/users/rustyrussell/gists{/gist_id}","starred_url":"https://api.github.com/users/rustyrussell/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/rustyrussell/subscriptions","organizations_url":"https://api.github.com/users/rustyrussell/orgs","repos_url":"https://api.github.com/users/rustyrussell/repos","events_url":"https://api.github.com/users/rustyrussell/events{/privacy}","received_events_url":"https://api.github.com/users/rustyrussell/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-10-01T01:56:42Z","updated_at":"2015-10-01T01:56:42Z","closed_at":null,"body":"@sipa points out:\r\n\r\n sipa: you need a slightly stronger check\r\n sipa: the low-s requirement is that s is below n/2\r\n sipa: and n is around 2^256 - 2^128\r\n\r\nYou could screw the current code up by making me think you had given me a valid sig, but actually hadn't, and I'd lose."}}