SpyProof! encrypted symmetric key
File type: Encoded and encrypted file
An spk file extension is related to the SpyProof! data protection software. An spk file stores encrypted symmetric keys.
Found 6 different file type records with the same spk filename suffix.
File type category:
Encoded and encrypted file
Date updated: November 4, 2020
The spk file extension is used by SpyProof!, an encryption and security program for Microsoft Windows operating system that allows users to protect case sensitive data.
The spk format is used for encrypted symmetric keys.
The *.spk files are used for internal purposes of SpyProof! program.
Conversion to other formats is not possible.
File type category:
Document file
Date updated: April 18, 2018
The spk file extension is associated with the Bright Spark, a circuit simulation package for exploring the world of electronics, available for Microsoft Windows.
The spk file contains saved document.
Use Bright Spark to work with *.spk files.
Probably can be exported to other formats.
Software applications that can open spk files:
Microsoft Windows
Software applications that can edit spk files:
Microsoft Windows
Software capable of saving spk files:
Microsoft Windows
Software apps that create spk files:
Microsoft Windows
File type category:
Source code and script file
Date updated: September 24, 2026
In ZENworks Server Management, an SPK file is a source package rather than a compiled, deployable package. It stores the software package components together with the configuration information that defines how the package is built and installed.
The file is used with the ZENworks package management tools on Microsoft Windows. The package must normally be compiled or built by ZENworks before it can be distributed to managed computers.
Open or import the SPK file with the Novell ZENworks package management or package authoring tools on Microsoft Windows. It is not intended to be opened as a standalone document.
If the file came from a ZENworks installation or package project, use the corresponding ZENworks tools to inspect or edit its package contents and configuration.
An SPK file is not normally converted with a general-purpose file converter. Use the ZENworks package tools to compile or build it into a deployable software package.
Keep the original SPK file if the package needs to be edited later, because compiling it produces a deployment result rather than a directly editable replacement.
Software applications that can open spk files:
Microsoft Windows
Software applications that can edit spk files:
Microsoft Windows
Software capable of saving spk files:
Microsoft Windows
Software apps that create spk files:
Microsoft Windows
Software applications that handle other tasks involving spk files:
Microsoft Windows
File type category:
Archive and compressed file
Date updated: September 30, 2026
Stampede Linux used SPK as one of its default distribution package formats. An SPK file packages software for installation on a Stampede Linux system.
Stampede Linux was no longer actively developed by 2002, so the SPK format is mainly of historical interest.
Open an SPK file with the package-management tools included with Stampede Linux. Those tools can inspect the package and install its contents on a compatible Stampede Linux system.
General archive utilities may not understand the SPK package format. On other Linux or Unix systems, a compatible Stampede package tool may be required.
SPK files are software packages rather than documents intended for format conversion. They are used with Stampede Linux package-management tools rather than converted.
Software applications that can open spk files:
Linux/Unix
Software applications that can edit spk files:
Linux/Unix
Software capable of saving spk files:
Linux/Unix
Software apps that create spk files:
Linux/Unix
File type category:
Archive and compressed file
Date updated: September 7, 2026
The format is designed for DiskStation Manager (DSM), Synology's Linux-based operating system for NAS devices. A package commonly includes an INFO metadata file, lifecycle scripts for installation and removal, icons, configuration resources, and a compressed payload containing application files. The exact internal layout varies by DSM generation and package developer.
Packages may be downloaded from the official Synology Package Center, obtained from a trusted third-party developer, or built for a particular Synology device and DSM release. Compatibility can depend on the NAS processor architecture, DSM version, required system libraries, permissions, dependencies, and package trust or signing requirements.
Although an SPK package is commonly based on a tar archive and can often be inspected with general-purpose archive utilities, its contents are intended to be managed by DSM. Installation scripts can create users, modify services, and access system directories, so packages should be obtained from trusted sources and checked for compatibility before installation.
On Windows, utilities such as 7-Zip can usually display or extract the contents. On macOS and Linux, archive managers and standard command-line tools can inspect the underlying archive, but these platforms do not provide the DSM environment required to install or operate the package.
On a compatible Synology NAS, sign in to DSM, open Package Center, and choose the manual installation option to select the SPK package. DSM checks the package and installs it when the device architecture, DSM version, dependencies, permissions, and applicable trust requirements are satisfied.
On Windows, use 7-Zip or another archive utility to inspect or extract the package. On macOS and Linux, use an archive manager or a compatible tar utility for inspection. Extracting the files does not install the application; installation should be performed on the target Synology NAS through DSM.
There is generally no useful conversion between a Synology package and another file format. To create or update one, use Synology package development tools or a project such as spksrc, then build the package for the target DSM version and NAS architecture. Manually repacking extracted files can produce an invalid package because its metadata, permissions, scripts, and archive structure must remain consistent.
Archive utilities can extract an SPK package for inspection, but online converters are not recommended and normally cannot convert it into a functional application format. To move the application, install the original package on a compatible NAS; to distribute modified software, build a new package using the appropriate Synology packaging workflow.
Software applications that can open spk files:
Linux/Unix
Software apps that execute or run spk files:
Linux/Unix
File type category:
Game file
Date updated: November 1, 2017
The spk file extension is associated with the Wolfenstein (version for year 2009), a 3D first person shooter, created by Raven Software for Microsoft Windows operating system.
The spk file stores game data from Wolfenstein.
Software applications that handle other tasks involving spk files:
Microsoft Windows
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