Debian Gpg Error Aptitude
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------------------------ Rename Page Delete Page ------------------------ Subscribe User ------------------------ Remove Spam Revert to this revision Package Pages ------------------------ Load Save SlideShow SecureApt All about secure apt In recent releases, Debian has been using strong crypto to validate downloaded packages. This is commonly called "secure apt" (or "apt-secure") and
Debian Gpg Error Keyexpired
was implemented in Apt version 0.6 in 2003, which Debian migrated to in 2005. Since debian gpg error the following signatures were invalid the documentation (here and here) is fairly slim on how this all works from an administrator's point of view, this document
Gpg Error No_pubkey Debian
will try to explain in detail how secure apt works and how to use it. This article discusses things at a relatively high level. For details on the format of the files Debian repositories please refer debian apt-get update gpg error no_pubkey to the RepositoryFormat page. For detailed information on commands please refer to the man pages of the tools. Contents All about secure apt Basic concepts Secure apt groundwork: checksums Signed Release files How apt uses Release.gpg How to tell apt what to trust How to find and add a key How to tell if the key is safe Debian archive key expiry How to manually check for package's integrity Other problems Setting up debian gpg key a secure apt repository History Comments and questions Basic concepts Here are a few basic concepts that you'll need to understand for the rest of this document. A secure hash function (a type of checksum) is a method of taking a file and boiling it down to a reasonably short number that will uniquely identify the content of the file, even if people are deliberately trying to create a pair of different files with the same checksum or create a new file that matches a previous checksum. APT was originally designed around MD5 but people have since managed to construct collisions and so support for newer hash functions has been added. Public key cryptography is based on pairs of keys, a public key and a private key. The public key is given out to the world; the private key must be kept a secret. Anyone possessing the public key can encrypt a message so that it can only be read by someone possessing the private key. It's also possible to use a private key to sign a file, not encrypt it. If a private key is used to sign a file, then anyone who has the public key can check that the file was signed by that key. Anyone who doesn't have the private
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the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How to trust a apt https://wiki.debian.org/SecureApt repository : Debian apt-get update error public key is not available: NO_PUBKEY
Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the http://serverfault.com/questions/7145/what-should-i-do-when-i-got-the-keyexpired-error-message-after-an-apt-get-update company Business Learn more about hiring developers or posting ads with us Server Fault Questions http://serverfault.com/questions/337278/debian-how-can-i-securely-get-debian-archive-keyring-so-that-i-can-do-an-apt-g Tags Users Badges Unanswered Ask Question _ Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top What should I do when I got gpg error the KEYEXPIRED error message after an apt-get update? up vote 20 down vote favorite 11 While updating my packages on a debian based system by a sudo apt-get update I've got that error message : Reading package lists... Done W: GPG error: ftp://ftp.fr.debian.org stable/non-US Release: The following signatures were invalid: KEYEXPIRED 1138684904 What should I do to fix this ? linux debian share|improve this question edited May 24 '09 at 7:04 Zoredache 94.7k22184317 asked debian gpg error May 11 '09 at 19:58 paulgreg 1,94931931 add a comment| 6 Answers 6 active oldest votes up vote 34 down vote +50 To find any expired repository keys and their IDs, use apt-key as follows: apt-key list | grep expired You will get a result similar to the following: pub 4096R/BE1DB1F1 2011-03-29 [expired: 2014-03-28] The key ID is the bit after the / i.e. BE1DB1F1 in this case. To update the key, run sudo apt-key adv --recv-keys --keyserver keys.gnupg.net BE1DB1F1 Note: Updating the key will obviously not work if the package maintainer has not (yet) uploaded a new key. In that case there is little you can do other than contacting the maintainer, filing a bug against your distribution etc. share|improve this answer edited Nov 4 '15 at 20:50 answered Jul 24 '14 at 23:44 kynan 69356 that does not work for me, after the command for updating the key, the key is still expired. –Karl Forner Nov 6 '14 at 12:20 @KarlForner was adding the key successful? –kynan Nov 7 '14 at 10:18 yes it was successful. –Karl Forner Nov 7 '14 at 14:08 @KarlForner Note that if the package maintainer has not uploaded a new key this will of course have no effect and there's nothing you can do in
Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Server Fault Questions Tags Users Badges Unanswered Ask Question _ Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Debian. How can I securely get debian-archive-keyring, so that I can do an apt-get update? NO_PUBKEY up vote 12 down vote favorite 1 I have a catch 22 trying to: # apt-get update [... good lines omitted] W: GPG error: http://backports.debian.org lenny-backports Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY AED4B06F473041FA W: GPG error: http://http.us.debian.org stable Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY AED4B06F473041FA W: GPG error: http://ftp.us.debian.org lenny Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY AED4B06F473041FA At http://wiki.debian.org/SecureApt#Other_problems it notes the NO_PUBKEY issue "means the archive has begun to be signed by a new key, which your system does not know about ... and once the system is fed the new key (by upgrading the debian-archive-keyring package), the warning will go away" OK, but perversely: apt-get install debian-archive-keyring gives me: WARNING: The following packages cannot be authenticated! debian-archive-keyring and the solution for that is to do an apt-get update There's a hole in the bucket, dear 'liza. Can anyone break the cycle for me? -- Note: my /etc/apt/sources.list is: deb http://ftp.us.debian.org/debian/ lenny main contrib non-free deb http://http.us.debian.org/debian stable main contrib non-free deb http://security.debian.org lenny/updates main contrib non-free deb http://backports.debian.org