CRC

[Tomasz Szczepa?ski]

Hello,
I have to generate CRC , can someone show me how it can be done ??

Regards
Paul

 

[Joergen Bech]

http://www.vbaccelerator.com/home/NET/Code/Libraries/CRC32/article.asp

/JB

 

[Guest]

Hello,
Thenx fo example

i have write it in vb
but it stil is diferent from CRC32
Is posible to convert hash to CRC32 ??

Regards
Paul
---------------Code

Function crc(ByVal file_name As String) As String
Dim file As System.IO.FileStream
Dim Sha1T As SHA1CryptoServiceProvider
Dim HASH
Dim BUFF As New StringBuilder
Dim hashByte As Byte
file = New FileStream(file_name, FileMode.Open, FileAccess.Read,
FileShare.Read, 8192)
Sha1T = New SHA1CryptoServiceProvider()

Sha1T.ComputeHash(file)
HASH = Sha1T.Hash
For Each hashByte In HASH
BUFF.Append(String.Format("{0:X1}", hashByte))
Next
Return BUFF.ToString()
End Function

 

[Joergen Bech]

If you follow the "Download" link at the top/left of the
web page I linked to, you get to

http://www.vbaccelerator.com/home/NET/Code/Libraries/CRC32/Crc32.asp

Looks to me as if you grabbed the code from the section at
the bottom titled "Other Hash Algorithms", which does not have
anything to do with calculating CRC32.

Download the crc32.zip file and unzip it for the full CRC32 source
example.

/Joergen Bech

 

[Tomasz Szczepa?ski]

Eureka it's working great.

Thx you very much

Paul