Logo Questions Linux Laravel Mysql Ubuntu Git Menu
HTML CSS JAVASCRIPT SQL PYTHON PHP BOOTSTRAP JAVA JQUERY R React Kotlin
 

Do .NET assemblies ever change?

Tags:

.net

assemblies

I have a need to provide a 32-bit CRC (Cyclic Redundancy Check) of all assemblies, which is stored (for release control purposes), and may then be compared against the assemblies present on a system at a later date (in order to check that the release hasn't been corrupted in some way).

I have no problem calculating the CRC of the assemblies themselves, my question is this:

Do .NET assemblies ever change? I.e. Does the actual binary content of the assembly ever change (for any reason) after it is installed on the target system? If it does, then the CRC would change also.

Note, I am referring only to assemblies that are packaged with my software, not the standard System assemblies, those are not checked.

Cheers

like image 519
Alistair Evans Avatar asked Jan 20 '10 11:01

Alistair Evans

People also ask

What is an assembly in .NET framework?

An assembly is a collection of types and resources that are built to work together and form a logical unit of functionality. Assemblies take the form of executable (.exe) or dynamic link library (. dll) files, and are the building blocks of . NET applications.

What is default type of dotnet assembly?

By default, assemblies are private. A private assembly is used only by a single application, and is stored in application folder, or in a subfolder. When the . net code gets compiled it generates an assembly which is stored in bin folder.

What is .NET assembly explain its types?

In the Microsoft . NET framework, an assembly is a partially compiled code library for use in deployment, versioning and security. There are two types: process assemblies (EXE) and library assemblies (DLL). A process assembly represents a process which will use classes defined in library assemblies. .

What are assemblies C#?

An assembly is a file that is automatically generated by the compiler upon successful compilation of every . NET application. It can be either a Dynamic Link Library or an executable file. It is generated only once for an application and upon each subsequent compilation the assembly gets updated.

2 Answers

You are re-inventing a wheel, strong naming already does this. Tampering an assembly so that it has the right CRC32 is pretty simple. Breaking a strong name is not, it is cryptographically secure.

like image 74
Hans Passant Avatar answered Sep 19 '22 16:09

Hans Passant

If you don't update the assemblies (overwrite them), they will never change.

like image 41
Philippe Leybaert Avatar answered Sep 17 '22 16:09

Philippe Leybaert
Sign in to Comment

Related questions

Is using delegates excessively a bad idea for performance? [duplicate]
Multi-Threading Question - adding an Element to a static List
How can I mock Assembly?
providing an asynchronous programming model: Should I? and if so, should it be VerbAsync() or BeginVerb()?
ClickOnce deployment location
Regex slow on Windows Server 2008
DropDown list with checkboxes
Calling a web service from a script or batch file
Switch compilation between compact and full .net framework?
A few questions before trying out .Net
Apparent Memory Leak in DataGridView
FileUpload control resulting in empty file
Get active references to an object
Detecting browsers installed so Process.Start("chrome") won't error
xsl format date (substring + concatenate ?)
Clean user HTML in .net
Why Browsable attribute makes property not bindable?
What is most CPU efficient method to make the worker threads wait for tasks?
Merge cells in datagridview
Disable and Enable Screen Saver in Windows 7

Donate For Us

If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!