I suspect that a truncated package has been uploaded and fingerprinted.
Fingerprint is correct
Published in forum.
Official Installers for 64-bit Ubuntu Linux:
5.4.3f1: http://download.unity3d.com/download_unity/linux/unity-editor-5.4.3f1+20161117_amd64.deb
(sha1sum f8b441c5ef79ccfad21e62307af5096062a489e2)
vs from downloaded file
f8b441c5ef79ccfad21e62307af5096062a489e2 unity-editor-5.4.3f1+20161117_amd64.deb
–2016-11-27 21:56:42-- http://download.unity3d.com/download_unity/linux/unity-editor-5.4.3f1+20161117_amd64.deb
Resolving download.unity3d.com (download.unity3d.com)… 23.59.182.72, 23.59.182.49
Connecting to download.unity3d.com (download.unity3d.com)|23.59.182.72|:80… connected.
HTTP request sent, awaiting response… 200 OK
Length: 1082064628 (1.0G) [application/x-debian-package]
Previous release was ~2.4G
–2016-11-27 21:47:36-- http://download.unity3d.com/download_unity/linux/unity-editor-5.4.1f1+20160913_amd64.deb
Resolving download.unity3d.com (download.unity3d.com)… 23.206.194.43, 23.206.194.34
Connecting to download.unity3d.com (download.unity3d.com)|23.206.194.43|:80… connected.
HTTP request sent, awaiting response… 200 OK
Length: 2441646192 (2.3G) [application/x-debian-package]
Saving to: 'unity-editor-5.4.1f1+20160913_amd64.deb’
Fails to install with truncated file error
(Reading database … 272608 files and directories currently installed.)
Preparing to unpack unity-editor-5.4.3f1+20161117_amd64.deb …
Unpacking unity-editor (5.4.3f1) …
dpkg-deb (subprocess): cannot copy archive member from ‘unity-editor-5.4.3f1+20161117_amd64.deb’ to decompressor pipe: unexpected end of file or stream
dpkg-deb: error: subprocess paste returned error exit status 2
dpkg: error processing archive unity-editor-5.4.3f1+20161117_amd64.deb (–install):
cannot copy extracted data for ‘./opt/Unity/Editor/Data/PlaybackEngines/iOSSupport/Trampoline/Libraries/libiPhone-lib-il2cpp-dev.a’ to ‘/opt/Unity/Editor/Data/PlaybackEngines/iOSSupport/Trampoline/Libraries/libiPhone-lib-il2cpp-dev.a.dpkg-new’: unexpected end of file or stream
Errors were encountered while processing:
unity-editor-5.4.3f1+20161117_amd64.deb