{"action":"created","comment":{"url":"https://api.github.com/repos/Homebrew/homebrew/pulls/comments/56982472","id":56982472,"diff_hunk":"@@ -0,0 +1,22 @@\n+During early 2015 Homebrew started the process of deprecating _SHA1_ for package\n+integrity verification. Since then every formulae under the Homebrew organisation\n+has since been moved onto _SHA256_ verification; this includes both source packages\n+and our precompiled packages (bottles).\n+\n+We also stopped supporting _MD5_ entirely. It was removed from core formulae towards\n+the end of 2012 but till 2015 if you tried to install a formula still using an\n+_MD5_ checksum Homebrew wouldn't actively stop you. Since that point it has.\n+\n+On _SHA1_ we added a `brew audit` check that flags _SHA1_ checksums as deprecated\n+and requests that you use _SHA256_.\n+\n+From March 20th 2016 we've stepped up the visibility of that notification & you'll start\n+seeing deprecation warnings when installing _SHA1_-validated formula.\n+If you see these please consider reporting it to where the formula originated.\n+\n+We're targeting **the end of September 2016** for _SHA1_ support removal,\n+19 months after we started warning people to move away from it for verification.\n+This will be enforced in the same way _MD5_ is today.","path":"share/doc/homebrew/Checksum_Deprecation.md","position":24,"original_position":19,"commit_id":"bfe1c09a4be9d5ce7664a5f28208e807ca42afaf","original_commit_id":"fda9248ecdeea59ee6c40616c7208ca7abe3f080","user":{"login":"mikemcquaid","id":125011,"avatar_url":"https://avatars.githubusercontent.com/u/125011?v=3","gravatar_id":"","url":"https://api.github.com/users/mikemcquaid","html_url":"https://github.com/mikemcquaid","followers_url":"https://api.github.com/users/mikemcquaid/followers","following_url":"https://api.github.com/users/mikemcquaid/following{/other_user}","gists_url":"https://api.github.com/users/mikemcquaid/gists{/gist_id}","starred_url":"https://api.github.com/users/mikemcquaid/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/mikemcquaid/subscriptions","organizations_url":"https://api.github.com/users/mikemcquaid/orgs","repos_url":"https://api.github.com/users/mikemcquaid/repos","events_url":"https://api.github.com/users/mikemcquaid/events{/privacy}","received_events_url":"https://api.github.com/users/mikemcquaid/received_events","type":"User","site_admin":true},"body":":+1: but might be worth spelling out explicitly.","created_at":"2016-03-22T13:10:39Z","updated_at":"2016-03-22T13:10:39Z","html_url":"https://github.com/Homebrew/homebrew/pull/50282#discussion_r56982472","pull_request_url":"https://api.github.com/repos/Homebrew/homebrew/pulls/50282","_links":{"self":{"href":"https://api.github.com/repos/Homebrew/homebrew/pulls/comments/56982472"},"html":{"href":"https://github.com/Homebrew/homebrew/pull/50282#discussion_r56982472"},"pull_request":{"href":"https://api.github.com/repos/Homebrew/homebrew/pulls/50282"}}},"pull_request":{"url":"https://api.github.com/repos/Homebrew/homebrew/pulls/50282","id":63500136,"html_url":"https://github.com/Homebrew/homebrew/pull/50282","diff_url":"https://github.com/Homebrew/homebrew/pull/50282.diff","patch_url":"https://github.com/Homebrew/homebrew/pull/50282.patch","issue_url":"https://api.github.com/repos/Homebrew/homebrew/issues/50282","number":50282,"state":"open","locked":false,"title":"Checksum_Deprecation: add guiding document","user":{"login":"DomT4","id":6998367,"avatar_url":"https://avatars.githubusercontent.com/u/6998367?v=3","gravatar_id":"","url":"https://api.github.com/users/DomT4","html_url":"https://github.com/DomT4","followers_url":"https://api.github.com/users/DomT4/followers","following_url":"https://api.github.com/users/DomT4/following{/other_user}","gists_url":"https://api.github.com/users/DomT4/gists{/gist_id}","starred_url":"https://api.github.com/users/DomT4/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/DomT4/subscriptions","organizations_url":"https://api.github.com/users/DomT4/orgs","repos_url":"https://api.github.com/users/DomT4/repos","events_url":"https://api.github.com/users/DomT4/events{/privacy}","received_events_url":"https://api.github.com/users/DomT4/received_events","type":"User","site_admin":false},"body":"### All Submissions:\r\n\r\n- [x] Have you followed the guidelines in our [Contributing](https://github.com/Homebrew/homebrew/blob/master/.github/CONTRIBUTING.md) document?\r\n- [x] Have you checked to ensure there aren't other open [Pull Requests](https://github.com/Homebrew/homebrew/pulls) for the same update/change?\r\n\r\nAdds a revised version of the guiding document I've been floating around for a month or two now.\r\n\r\nThe idea being to deprecate SHA1 on a more formal timetable than we did MD5 completely and SHA1 on `brew audit` so it doesn't \"surprise\" so many people. 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