{"action":"closed","number":2662,"pull_request":{"url":"https://api.github.com/repos/hypothesis/h/pulls/2662","id":48486300,"html_url":"https://github.com/hypothesis/h/pull/2662","diff_url":"https://github.com/hypothesis/h/pull/2662.diff","patch_url":"https://github.com/hypothesis/h/pull/2662.patch","issue_url":"https://api.github.com/repos/hypothesis/h/issues/2662","number":2662,"state":"closed","locked":false,"title":"Replace hashids with pubids","user":{"login":"nickstenning","id":3602,"avatar_url":"https://avatars.githubusercontent.com/u/3602?v=3","gravatar_id":"","url":"https://api.github.com/users/nickstenning","html_url":"https://github.com/nickstenning","followers_url":"https://api.github.com/users/nickstenning/followers","following_url":"https://api.github.com/users/nickstenning/following{/other_user}","gists_url":"https://api.github.com/users/nickstenning/gists{/gist_id}","starred_url":"https://api.github.com/users/nickstenning/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nickstenning/subscriptions","organizations_url":"https://api.github.com/users/nickstenning/orgs","repos_url":"https://api.github.com/users/nickstenning/repos","events_url":"https://api.github.com/users/nickstenning/events{/privacy}","received_events_url":"https://api.github.com/users/nickstenning/received_events","type":"User","site_admin":false},"body":"This PR removes all use of the `Group.hashid` property, and then removes all the supporting infrastructure for hashids. It replaces hashids with a column called `pubid` on the group table, which is filled by default using the output of the `h.pubid:generate` function.\r\n\r\nFor posterity, it's worth noting the reason for this change: at the time of writing, we are using hashids for two reasons:\r\n\r\n1. To prevent users from guessing the URL for the \"join a group\" pages of groups they have not been invited to.\r\n\r\n2. To avoid leaking details of the how many groups have been created through the use of an integer primary key in URLs.\r\n\r\nBoth of these are ultimately security requirements, and the cryptographic properties of hashids are [questionable at best](https://carnage.github.io/2015/08/cryptanalysis-of-hashids/).\r\n\r\nIn order to avoid the possibility of having to remove hashids at a later date, thus breaking many URLs, we are adopting a much simpler, much more \"stupid\" (i.e. less \"clever\"), way of generating this \"public IDs\", which now relies for its cryptographic properties on the system CSPRNG[^1] rather than the algorithm or implementation of hashids. And, frankly, if /dev/urandom is broken, we have bigger problems...\r\n\r\n[^1]: \"Cryptographically Secure Pseudo-Random Number Generator\". See also: https://en.wikipedia.org/wiki/Cryptographically_secure_pseudorandom_number_generator","created_at":"2015-10-22T17:18:18Z","updated_at":"2015-10-23T14:39:23Z","closed_at":"2015-10-23T14:39:23Z","merged_at":"2015-10-23T14:39:23Z","merge_commit_sha":"8593400404fcd476dd6587051fe8b1c49a5216ee","assignee":null,"milestone":null,"commits_url":"https://api.github.com/repos/hypothesis/h/pulls/2662/commits","review_comments_url":"https://api.github.com/repos/hypothesis/h/pulls/2662/comments","review_comment_url":"https://api.github.com/repos/hypothesis/h/pulls/comments{/number}","comments_url":"https://api.github.com/repos/hypothesis/h/issues/2662/comments","statuses_url":"https://api.github.com/repos/hypothesis/h/statuses/ddef56fa8f471c9c14bfc5cb1298b00e6e25ec8d","head":{"label":"hypothesis:replace-hashids-with-pubids","ref":"replace-hashids-with-pubids","sha":"ddef56fa8f471c9c14bfc5cb1298b00e6e25ec8d","user":{"login":"hypothesis","id":1243215,"avatar_url":"https://avatars.githubusercontent.com/u/1243215?v=3","gravatar_id":"","url":"https://api.github.com/users/hypothesis","html_url":"https://github.com/hypothesis","followers_url":"https://api.github.com/users/hypothesis/followers","following_url":"https://api.github.com/users/hypothesis/following{/other_user}","gists_url":"https://api.github.com/users/hypothesis/gists{/gist_id}","starred_url":"https://api.github.com/users/hypothesis/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/hypothesis/subscriptions","organizations_url":"https://api.github.com/users/hypothesis/orgs","repos_url":"https://api.github.com/users/hypothesis/repos","events_url":"https://api.github.com/users/hypothesis/events{/privacy}","received_events_url":"https://api.github.com/users/hypothesis/received_events","type":"Organization","site_admin":false},"repo":{"id":3910945,"name":"h","full_name":"hypothesis/h","owner":{"login":"hypothesis","id":1243215,"avatar_url":"https://avatars.githubusercontent.com/u/1243215?v=3","gravatar_id":"","url":"https://api.github.com/users/hypothesis","html_url":"https://github.com/hypothesis","followers_url":"https://api.github.com/users/hypothesis/followers","following_url":"https://api.github.com/users/hypothesis/following{/other_user}","gists_url":"https://api.github.com/users/hypothesis/gists{/gist_id}","starred_url":"https://api.github.com/users/hypothesis/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/hypothesis/subscriptions","organizations_url":"https://api.github.com/users/hypothesis/orgs","repos_url":"https://api.github.com/users/hypothesis/repos","events_url":"https://api.github.com/users/hypothesis/events{/privacy}","received_events_url":"https://api.github.com/users/hypothesis/received_events","type":"Organization","site_admin":false},"private":false,"html_url":"https://github.com/hypothesis/h","description":"The Internet, peer reviewed.","fork":false,"url":"https://api.github.com/repos/hypothesis/h","forks_url":"https://api.github.com/repos/hypothesis/h/forks","keys_url":"https://api.github.com/repos/hypothesis/h/keys{/key_id}","collaborators_url":"https://api.github.com/repos/hypothesis/h/collaborators{/collaborator}","teams_url":"https://api.github.com/repos/hypothesis/h/teams","hooks_url":"https://api.github.com/repos/hypothesis/h/hooks","issue_events_url":"https://api.github.com/repos/hypothesis/h/issues/events{/number}","events_url":"https://api.github.com/repos/hypothesis/h/events","assignees_url":"https://api.github.com/repos/hypothesis/h/assignees{/user}","branches_url":"https://api.github.com/repos/hypothesis/h/branches{/branch}","tags_url":"https://api.github.com/repos/hypothesis/h/tags","blobs_url":"https://api.github.com/repos/hypothesis/h/git/blobs{/sha}","git_tags_url":"https://api.github.com/repos/hypothesis/h/git/tags{/sha}","git_refs_url":"https://api.github.com/repos/hypothesis/h/git/refs{/sha}","trees_url":"https://api.github.com/repos/hypothesis/h/git/trees{/sha}","statuses_url":"https://api.github.com/repos/hypothesis/h/statuses/{sha}","languages_url":"https://api.github.com/repos/hypothesis/h/languages","stargazers_url":"https://api.github.com/repos/hypothesis/h/stargazers","contributors_url":"https://api.github.com/repos/hypothesis/h/contributors","subscribers_url":"https://api.github.com/repos/hypothesis/h/subscribers","subscription_url":"https://api.github.com/repos/hypothesis/h/subscription","commits_url":"https://api.github.com/repos/hypothesis/h/commits{/sha}","git_commits_url":"https://api.github.com/repos/hypothesis/h/git/commits{/sha}","comments_url":"https://api.github.com/repos/hypothesis/h/comments{/number}","issue_comment_url":"https://api.github.com/repos/hypothesis/h/issues/comments{/number}","contents_url":"https://api.github.com/repos/hypothesis/h/contents/{+path}","compare_url":"https://api.github.com/repos/hypothesis/h/compare/{base}...{head}","merges_url":"https://api.github.com/repos/hypothesis/h/merges","archive_url":"https://api.github.com/repos/hypothesis/h/{archive_format}{/ref}","downloads_url":"https://api.github.com/repos/hypothesis/h/downloads","issues_url":"https://api.github.com/repos/hypothesis/h/issues{/number}","pulls_url":"https://api.github.com/repos/hypothesis/h/pulls{/number}","milestones_url":"https://api.github.com/repos/hypothesis/h/milestones{/number}","notifications_url":"https://api.github.com/repos/hypothesis/h/notifications{?since,all,participating}","labels_url":"https://api.github.com/repos/hypothesis/h/labels{/name}","releases_url":"https://api.github.com/repos/hypothesis/h/releases{/id}","created_at":"2012-04-02T19:56:59Z","updated_at":"2015-10-20T18:39:20Z","pushed_at":"2015-10-23T14:39:23Z","git_url":"git://github.com/hypothesis/h.git","ssh_url":"git@github.com:hypothesis/h.git","clone_url":"https://github.com/hypothesis/h.git","svn_url":"https://github.com/hypothesis/h","homepage":"https://hypothes.is/","size":48267,"stargazers_count":500,"watchers_count":500,"language":"Python","has_issues":true,"has_downloads":true,"has_wiki":true,"has_pages":false,"forks_count":124,"mirror_url":null,"open_issues_count":138,"forks":124,"open_issues":138,"watchers":500,"default_branch":"master"}},"base":{"label":"hypothesis:master","ref":"master","sha":"e4d4b957cda8188e6c071a2d3cf585bfa1112fa8","user":{"login":"hypothesis","id":1243215,"avatar_url":"https://avatars.githubusercontent.com/u/1243215?v=3","gravatar_id":"","url":"https://api.github.com/users/hypothesis","html_url":"https://github.com/hypothesis","followers_url":"https://api.github.com/users/hypothesis/followers","following_url":"https://api.github.com/users/hypothesis/following{/other_user}","gists_url":"https://api.github.com/users/hypothesis/gists{/gist_id}","starred_url":"https://api.github.com/users/hypothesis/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/hypothesis/subscriptions","organizations_url":"https://api.github.com/users/hypothesis/orgs","repos_url":"https://api.github.com/users/hypothesis/repos","events_url":"https://api.github.com/users/hypothesis/events{/privacy}","received_events_url":"https://api.github.com/users/hypothesis/received_events","type":"Organization","site_admin":false},"repo":{"id":3910945,"name":"h","full_name":"hypothesis/h","owner":{"login":"hypothesis","id":1243215,"avatar_url":"https://avatars.githubusercontent.com/u/1243215?v=3","gravatar_id":"","url":"https://api.github.com/users/hypothesis","html_url":"https://github.com/hypothesis","followers_url":"https://api.github.com/users/hypothesis/followers","following_url":"https://api.github.com/users/hypothesis/following{/other_user}","gists_url":"https://api.github.com/users/hypothesis/gists{/gist_id}","starred_url":"https://api.github.com/users/hypothesis/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/hypothesis/subscriptions","organizations_url":"https://api.github.com/users/hypothesis/orgs","repos_url":"https://api.github.com/users/hypothesis/repos","events_url":"https://api.github.com/users/hypothesis/events{/privacy}","received_events_url":"https://api.github.com/users/hypothesis/received_events","type":"Organization","site_admin":false},"private":false,"html_url":"https://github.com/hypothesis/h","description":"The Internet, peer reviewed.","fork":false,"url":"https://api.github.com/repos/hypothesis/h","forks_url":"https://api.github.com/repos/hypothesis/h/forks","keys_url":"https://api.github.com/repos/hypothesis/h/keys{/key_id}","collaborators_url":"https://api.github.com/repos/hypothesis/h/collaborators{/collaborator}","teams_url":"https://api.github.com/repos/hypothesis/h/teams","hooks_url":"https://api.github.com/repos/hypothesis/h/hooks","issue_events_url":"https://api.github.com/repos/hypothesis/h/issues/events{/number}","events_url":"https://api.github.com/repos/hypothesis/h/events","assignees_url":"https://api.github.com/repos/hypothesis/h/assignees{/user}","branches_url":"https://api.github.com/repos/hypothesis/h/branches{/branch}","tags_url":"https://api.github.com/repos/hypothesis/h/tags","blobs_url":"https://api.github.com/repos/hypothesis/h/git/blobs{/sha}","git_tags_url":"https://api.github.com/repos/hypothesis/h/git/tags{/sha}","git_refs_url":"https://api.github.com/repos/hypothesis/h/git/refs{/sha}","trees_url":"https://api.github.com/repos/hypothesis/h/git/trees{/sha}","statuses_url":"https://api.github.com/repos/hypothesis/h/statuses/{sha}","languages_url":"https://api.github.com/repos/hypothesis/h/languages","stargazers_url":"https://api.github.com/repos/hypothesis/h/stargazers","contributors_url":"https://api.github.com/repos/hypothesis/h/contributors","subscribers_url":"https://api.github.com/repos/hypothesis/h/subscribers","subscription_url":"https://api.github.com/repos/hypothesis/h/subscription","commits_url":"https://api.github.com/repos/hypothesis/h/commits{/sha}","git_commits_url":"https://api.github.com/repos/hypothesis/h/git/commits{/sha}","comments_url":"https://api.github.com/repos/hypothesis/h/comments{/number}","issue_comment_url":"https://api.github.com/repos/hypothesis/h/issues/comments{/number}","contents_url":"https://api.github.com/repos/hypothesis/h/contents/{+path}","compare_url":"https://api.github.com/repos/hypothesis/h/compare/{base}...{head}","merges_url":"https://api.github.com/repos/hypothesis/h/merges","archive_url":"https://api.github.com/repos/hypothesis/h/{archive_format}{/ref}","downloads_url":"https://api.github.com/repos/hypothesis/h/downloads","issues_url":"https://api.github.com/repos/hypothesis/h/issues{/number}","pulls_url":"https://api.github.com/repos/hypothesis/h/pulls{/number}","milestones_url":"https://api.github.com/repos/hypothesis/h/milestones{/number}","notifications_url":"https://api.github.com/repos/hypothesis/h/notifications{?since,all,participating}","labels_url":"https://api.github.com/repos/hypothesis/h/labels{/name}","releases_url":"https://api.github.com/repos/hypothesis/h/releases{/id}","created_at":"2012-04-02T19:56:59Z","updated_at":"2015-10-20T18:39:20Z","pushed_at":"2015-10-23T14:39:23Z","git_url":"git://github.com/hypothesis/h.git","ssh_url":"git@github.com:hypothesis/h.git","clone_url":"https://github.com/hypothesis/h.git","svn_url":"https://github.com/hypothesis/h","homepage":"https://hypothes.is/","size":48267,"stargazers_count":500,"watchers_count":500,"language":"Python","has_issues":true,"has_downloads":true,"has_wiki":true,"has_pages":false,"forks_count":124,"mirror_url":null,"open_issues_count":138,"forks":124,"open_issues":138,"watchers":500,"default_branch":"master"}},"_links":{"self":{"href":"https://api.github.com/repos/hypothesis/h/pulls/2662"},"html":{"href":"https://github.com/hypothesis/h/pull/2662"},"issue":{"href":"https://api.github.com/repos/hypothesis/h/issues/2662"},"comments":{"href":"https://api.github.com/repos/hypothesis/h/issues/2662/comments"},"review_comments":{"href":"https://api.github.com/repos/hypothesis/h/pulls/2662/comments"},"review_comment":{"href":"https://api.github.com/repos/hypothesis/h/pulls/comments{/number}"},"commits":{"href":"https://api.github.com/repos/hypothesis/h/pulls/2662/commits"},"statuses":{"href":"https://api.github.com/repos/hypothesis/h/statuses/ddef56fa8f471c9c14bfc5cb1298b00e6e25ec8d"}},"merged":true,"mergeable":null,"mergeable_state":"unknown","merged_by":{"login":"robertknight","id":2458,"avatar_url":"https://avatars.githubusercontent.com/u/2458?v=3","gravatar_id":"","url":"https://api.github.com/users/robertknight","html_url":"https://github.com/robertknight","followers_url":"https://api.github.com/users/robertknight/followers","following_url":"https://api.github.com/users/robertknight/following{/other_user}","gists_url":"https://api.github.com/users/robertknight/gists{/gist_id}","starred_url":"https://api.github.com/users/robertknight/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/robertknight/subscriptions","organizations_url":"https://api.github.com/users/robertknight/orgs","repos_url":"https://api.github.com/users/robertknight/repos","events_url":"https://api.github.com/users/robertknight/events{/privacy}","received_events_url":"https://api.github.com/users/robertknight/received_events","type":"User","site_admin":false},"comments":14,"review_comments":2,"commits":3,"additions":242,"deletions":175,"changed_files":18}}