chilkatdotnet4.dll crypt2.decryptbytes method return 0 bytes in vb.net

[sreeramrengaraj]

Hi We have been using ChilkatDotNet.dll Version 8.2.0 with .Net Framework. We use Chilkat.MIME and Chilkat.Crypt2 classes. The Framework version of ChilKatDotNet.dll is working But the ChilkatDotNet4.DLL is not working with Similar functional.

The Old Working Code:

Dim _tempMime As String = Incoming Data 
_Body = New Chilkat.Mime 
Dim _EncodedContent As Byte() = System.Text.Encoding.GetEncoding(1252).GetBytes(_tempMime)_Body.LoadMimeBinary(_EncodedContent) 
Dim _crypt As New Chilkat.Crypt2 _crypt.CryptAlgorithm = "PKI" 
_RawContent = _crypt.DecryptBytes(_Body.GetBodyBinary())

New and not working code:

Dim _tempMime As String = Incoming Data 
_Body = New Chilkat.Mime 
Dim _EncodedContent As Byte() = System.Text.Encoding.GetEncoding(1252).GetBytes(_tempMime)_Body.LoadMimeBytes(_EncodedContent) 
Dim _crypt As New Chilkat.Crypt2 _crypt.CryptAlgorithm = "PKI" 
_RawContent = _crypt.DecryptBytes(_Body.GetBodyBinary())

Only Change is that LoadMimeBinary is not available ChilkatDotNEt4.dll so using LoadMimeBytes.
here LoadMimeBinary(ChilkatDotNet.dll ) and LoadMimeBytes(ChilkatDotNet4.dll) methods returns same value of bytes.

With this _crypt.DecryptBytes returns 0 Bytes.
chilkat log file shows message as
"Found matching certificate.
Found matching certificate, but no private key is available."

Thanks Advance. .