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How to verify your download with ASC, MD5, SHA256 checksums?
A checksum and hash prcossed on the files that were downloaded is a way to make sure that the content is authentic and
was not manipulated by an unauthorized third party, and has not been damaged during the download process.
Verify with ASC and KEYS hashes
This is how you verify with ASC and KEYS hashes on Windows
-
Download and install "Gpg4win" (by Intevation GmbH, Germany). "Gpg4win" (full name is "GNU Privacy Guard for
Windows") is used to encrypt data.
- For verifying the hashes you need the program "GnuPg". This is a tool that runs not in the graphical mode but in the
command prompt of Windows. Therefore you have to enter always the full path (default location after installation:
C:\Program Files\Gnu\GnuPg\gpg.exe
) until you add it to the $PATH
system environment
variable.
- Save the following file with your Internet browser to the location where the downloaded AOO file is stored:
https://people.apache.org/keys/group/openoffice.asc
- Open the start menu and enter
cmd.exe
into the search box.
- Now change to the directory with the downloaded AOO and ASC file, import and verify with the following commands:
cd <path_to_AOO_and_ASC_file>
C:\Program Files\Gnu\GnuPg\gpg.exe --import openoffice.asc
C:\Program Files\Gnu\GnuPg\gpg.exe --verify <ASC file>.asc <AOO file>.exe
- When both checksums match it is indicated with an "Good signature from <Person who has created the signature>
statement.
Otherwise "BAD signature from ...".
This is how you verify with ASC and KEYS hashes on Linux
- Open a terminal and change to the directory with the downloaded AOO and ASC file.
- Type in the following commands:
cd <path_to_AOO_and_ASC_file>
wget https://people.apache.org/keys/group/openoffice.asc
gpg --import openoffice.asc
gpg --verify <ASC file>.asc <AOO file>.tar.gz
- When both checksums match it is indicated with an "Good signature from <Person who has created the signature>
statement.
Otherwise "BAD signature from ...".
This is how you verify with ASC and KEYS hashes on Mac OS
- A requirement is that you have installed GnuPG.
- Open a terminal (usually from here: "/Applications/Utilities").
- Type in the following commands:
cd <path_to_AOO_and_ASC_file>
curl https://people.apache.org/keys/group/openoffice.asc -o openoffice.asc
gpg --import openoffice.asc
gpg --verify <ASC file>.asc <AOO file>.dmg
- When both checksums match it is indicated with an "Good signature from <Person who has created the signature>
statement.
Otherwise "BAD signature from ...".
Verify with MD5 hashes
This is how you verify MD5 checksums on Windows
-
Download "File Checksum Tool" (by KRyLack Software). "File Checksum Tool" is a graphical tool that is easy to use.
See here for a screenshot.
- Start the tool from where you have saved the downloaded file.
- Section "1) File to Verify": Insert the path and filename of the downloaded AOO file. The [Browse] button will
help to locate it with the Windows Explorer.
- Section "2) Hashing Algorithm": Choose "MD5".
- Section "3) File Checksum": Click on [Calculate Hash].
- Section "4) Verify With": Paste the hash from the MD5 file you have downloaded. First you have to open it and
copy the hash value.
- Finally, click on [Compare].
- When both hash values match a dialogbox shows "Checksums match". Otherwise "Checksums do not match".
- If the checksums do not match, please see the section below.
This is how you verify MD5 checksums on Linux
This is how you verify MD5 checksums on Mac OS
For more information please refer to the more detailed description about how to use MD5 hashes on Windows, Linux and via Firefox (for all platforms)..
Verify with SHA256 hashes
This is how you verify SHA256 checksums on Windows
-
Download "File Checksum Tool" (by KRyLack Software). "File Checksum Tool" is a graphical tool that is easy to use.
See here for a screenshot.
- Start the tool from where you have saved the downloaded file.
- Section "1) File to Verify": Insert the path and filename of the downloaded AOO file. The [Browse] button will
help to locate it with the Windows Explorer.
- Section "2) Hashing Algorithm": Choose "SHA-256".
- Section "3) File Checksum": Click on [Calculate Hash].
- Section "4) Verify With": Paste the hash from the SHA256 file you have downloaded. First you have to open it and
copy the hash value.
- Finally, click on [Compare].
- When both hash values match a dialogbox shows "Checksums match". Otherwise "Checksums do not match".
- If the checksums do not match, please see the section below.
This is how you verify SHA256 checksums on Linux
This is how you verify SHA256 checksums on Mac OS
What to do when the checksums do not match?
- If the checksums do not match, your downloaded AOO file is broken. Please try again a download to get a valid
file.
- If you are using a proxy server to get connected to the Internet try to disable this if your Internet Service
Provider is allowing this. Or enable it if it is disabled at the moment. Please consult the respective help topics for
the used Internet browser where to find this setting.
- If you still get no matching checksum and you are sure it is not caused by an error during downloading, please
inform the project. Make sure you have the following information at hand: exact file name of the downloaded file and
checksum file, the processed checksum from your computer, have you used proxy server (yes/no)?, if known from where the
files were downloaded.
- With this information send a mail to us via the following ways:
- User's mailing list *)
-
User forums (different languages)
*) Be aware that all mails do not go to a single person but a so-called mailing list. Mails will be archived and
can be accessed also by other users. To receive answers, you will need to subscribe to the mailing list before sending
mails. For instructions, see: Learn more about how to use mailing lists.
Important Notes:
- A language pack
is not a release for its own and has to be installed over a stable release with the same version number and platform.
It contains resource files for a specific language and platform to show, e.g., menus, dialogs, error messages in your
language. It may contain translated Help content. Language packs are created if at least 80% of the user interface (UI)
is translated. In case it is not fully localized, some elements of the UI or help topics will display in English as
default language.
Developer Snapshots
Developer Snapshots represent the most recent status of the Apache OpenOffice Development.
Please help us to improve the product quality of Apache OpenOffice.
Download and test the latest
versions.
Important:
These builds have not been fully tested and are under continuous development. It is not recommended for production use.
Report broken links
Please report any broken link or things you think that needs to be corrected on this webpage by sending a mail to:
Development mailing list. *)
Where to get help when I have a problem?
If you encounter problems with installation or using Apache OpenOffice, please contact us via the following ways:
*) Be aware that all mails do not go to a single person but a so-called mailing list. Mails will be archived and
can be accessed also by other users. To receive answers, you will need to subscribe to the mailing list before sending
mails. For instructions, see: Learn more about how to use mailing lists.