"Larry" <lp@nospam.com> wrote in message
news:ubbO5QKbFHA.1384@TK2MSFTNGP09.phx.gbl...
> Hello,
> Is there a framework class that implements CRC 32 algorithms. I could not
> find on msdn, I just want to make sure that I didn't miss it.
> If not can anyone explain how CRC32 algorithm can be implemented.
>
> Thank you
>
>
>
>

Larry <lp@nospam.com> wrote:
> Is there a framework class that implements CRC 32 algorithms. I could not
> find on msdn, I just want to make sure that I didn't miss it.
> If not can anyone explain how CRC32 algorithm can be implemented.

William Stacey [MVP] <staceywREMOVE@mvps.org> wrote:
> I would use SHA1.ComputeHash(stream).

"Jon Skeet [C# MVP]" <skeet@pobox.com> wrote in message
news:MPG.1d11efefc4e2734698c2a7@msnews.microsoft.com...
> William Stacey [MVP] <staceywREMOVE@mvps.org> wrote:
>> I would use SHA1.ComputeHash(stream).
>
> It depends on what the requirement is. If it's just "a hashing
> algorithm" then SHA1 would indeed be a pretty good choice - but there
> are other hashes which are cheaper to calculate but still good at
> preventing *accidental* corruption (rather than deliberate tampering).
> Adler32 is better than CRC32 in this respect, I believe.
>
> However, my guess is that the OP actually needs to work out a CRC32
> hash to match something else which is already working out a CRC32
> hash...
>
> --
> Jon Skeet - <skeet@pobox.com>
> http://www.pobox.com/~skeet
> If replying to the group, please do not mail me too

"William Stacey [MVP]" <staceywREMOVE@mvps.org> wrote in message
news:OIa5VrPbFHA.2288@TK2MSFTNGP14.phx.gbl...
> If Larry still needs some CRC32, I posted a small sample project at:
> http://spaces.msn.com/members/staceyw/Blog/cns!1pnsZpX0fPvDxLKC6rAAhLsQ!402.entry
>
> --
> William Stacey [MVP]
>
> "Jon Skeet [C# MVP]" <skeet@pobox.com> wrote in message
> news:MPG.1d11efefc4e2734698c2a7@msnews.microsoft.com...
>> William Stacey [MVP] <staceywREMOVE@mvps.org> wrote:
>>> I would use SHA1.ComputeHash(stream).
>>
>> It depends on what the requirement is. If it's just "a hashing
>> algorithm" then SHA1 would indeed be a pretty good choice - but there
>> are other hashes which are cheaper to calculate but still good at
>> preventing *accidental* corruption (rather than deliberate tampering).
>> Adler32 is better than CRC32 in this respect, I believe.
>>
>> However, my guess is that the OP actually needs to work out a CRC32
>> hash to match something else which is already working out a CRC32
>> hash...
>>
>> --
>> Jon Skeet - <skeet@pobox.com>
>> http://www.pobox.com/~skeet
>> If replying to the group, please do not mail me too
>
>