VB.NET

Hash File: SHA-1, HAVAL, MD2, MD5, SHA-256, SHA-384, SHA-512

See more Encryption Examples

Computing the hash for a file of any size. VB.NET

' This example assumes the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

Dim crypt As New Chilkat.Crypt2

' Any type of file may be hashed.
' There is  no size limitation because the file is consumed
' in streaming mode internally.
Dim filename As String
filename = "something.zip"

crypt.HashAlgorithm = "sha1"
crypt.EncodingMode = "hex"

' Other possible EncodingMode settings are: 
' "quoted-printable", "base64", "base32", and "url"

Dim hash As String = crypt.HashFileENC(filename)
Debug.WriteLine("SHA1:")
Debug.WriteLine(hash)

' Hash using MD2
crypt.HashAlgorithm = "md2"
hash = crypt.HashFileENC(filename)
Debug.WriteLine("MD2:")
Debug.WriteLine(hash)

' Hash using MD5
crypt.HashAlgorithm = "md5"
hash = crypt.HashFileENC(filename)
Debug.WriteLine("MD5:")
Debug.WriteLine(hash)

' Hash using SHA-256
crypt.HashAlgorithm = "sha256"
hash = crypt.HashFileENC(filename)
Debug.WriteLine("SHA256:")
Debug.WriteLine(hash)

' Hash using SHA-384
crypt.HashAlgorithm = "sha384"
hash = crypt.HashFileENC(filename)
Debug.WriteLine("SHA384:")
Debug.WriteLine(hash)

' Hash using SHA-512
crypt.HashAlgorithm = "sha512"
hash = crypt.HashFileENC(filename)
Debug.WriteLine("SHA512:")
Debug.WriteLine(hash)

' Hash using HAVAL
' There are two additional properties relevant to HAVAL:
' HavalRounds, and KeyLength.
' HavalRounds can have values of 3, 4, or 5.
' KeyLength can have values of 128, 160, 192, 224, or 256
crypt.HashAlgorithm = "haval"
crypt.HavalRounds = 5
crypt.KeyLength = 256
hash = crypt.HashFileENC(filename)
Debug.WriteLine("Haval:")
Debug.WriteLine(hash)