Validating the downloaded installer file

ZD&T installer now supports the signing of the installer. With the signed installer, you can validate the completeness of the downloaded package by running a command with the signing certificate that is packaged in the installer.

ZD&T Parallel Sysplex® installer file ZDT_Install_PS_V14.0.0.tgz that you download from IBM® is a compressed file. The installer file contains the installer ZDT_Install_PS_V14.0.0.x86_64 and the corresponding signature file ZDT_Install_PS_V14.0.0.x86_64.sig.

To validate the signature file for the installer, run the following command.

oPSnssl dgst -sha256 -verify <PUBLICKEYNAME> -signature <signature_file> <FILETOSIGN>

For example, run the following command from the directory that contains the extracted installer files.

oPSnssl dgst -sha256 -verify signature/public.PSm -signature ZDT_Install_PS_V14.0.0.x86_64.sig ZDT_Install_PS_V14.0.0.x86_64

If the installation file is valid, you will receive the message of Verified OK.