VS 2008 SSL Stream, Authenticating A Self-Signed Cert?
Sep 2, 2009
Im using the SSL stream class to connect to a server and authenticate their self-signed certificate. My authentication code gets an error: "RemoteCertificateChainErrors". When I drill down into the X509ChainStatuses, I only see a status of "UntrustedRoot" and status information of "A certificate chain processed, but terminated in a root certificate which is not trusted by the trust provider." This seems acceptable due to the self-signed nature of their certificate. I understand that I can ignore this error. However, Id like to do as much as possible to authenticate. I have a certificate from them. Ive been told to add their cert to my root certs somehow. How do I correct my code use this cert in authentication?
I need to read signed and unsigned 8 bit, 16 bit and 32 bit values from a file stream which may be little-endian or big-endian (it happens to be a tiff file which carries the byte order indicator at the start).I initially started by writing my own functions to read the values and was able to do so for unsigned values. e.g.
Public Function ReadUInt32() As UInt32 Dim b(4) As Byte input.Read(b, 0, 4)
[code]....
But then I started looking at signed values and my brain broke.As an alternative, I found the IO.BinaryReader which will let me read signed values directly but doesn't seem to have any way to indicate that the data is big-endian or little-endian.Is there a nice way of handling this? Failing that, can someone tell me how to convert multiple bytes into signed values (in both byte orders)?
Today I was just wondering how I would go about authenticating a HttpWebRequest to a certain site. I'm trying to get the Response from an order page to parse the HTML from it, however it always redirects to the login page when I try, even after assigning the credentials.
Newbie here I need to send a email with and attached file (a *.xls file) The condition is that the e-mail need to be signed and crypted. I already got a digital certificate sign (provided by Verisign). I also read something about X509Certificate2 Class on MSDN, and something about Outlook interop Model. My idea was use the Outlook Interop Model Class (from Outlook 2007) but i have no idea how to do this.
Im currently developing a custom logging component, that we will deploy with all our applications, windows services, webapps, windows apps etc. I have a few questions of various nature. The component is a single signed dll file:
1) Which is the "safest" way to get the current directory? For example, in the config file, in the config section I have a property "logpath". The application will read this and write a log file depending in what they write:
c:myapplog (it will write a log here, create whatever folders it need) /Log (directly under the installed app directory, like c:program filesmyappLog) Log (same as above) I need something that work with both windows and web apps, for webapps it will log under the virtual directory of the aspnet app.
2) For exception handling, if nothing special is happening, like in the DAL, I get a sql server exception, is there any point in using
I am trying to renew an existing (and not expired) ClickOnce certificate with the same key from the console certificate 'snap-in'. The wizard is giving me an Enroll error saying "the request contains no certificate template information" I don't think the existing cert has a template so can I just hit the 'Finish' button and ignore the error? Or do I have to create a template first?
I am an experienced vb6 programmer, even completed MCSD cert back in 2000. I have done alot since then, and I am thinking about learning vb.net where should i get started? From what I have seen briefly, the ADO is some of the biggest change from vb 6
i am creating a login form (Win Form App) and would like to display the users in a combolist called CBXUserName and authenticate the user name and password (which the user will enter) against the matching user name and password stored in the active directory. if the user doesn't get it right for 3 times i do not want the workstation to lock.
Protected Sub Login_Authenticate(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.AuthenticateEventArgs) Handles Login.Authenticate Dim objcon As New SqlConnection() Dim query As String
I am writting an application in VB 2008. The application will reside on a 'Manufacturing Workstaion'. The workstation is assigned a user ID of Prodxx. Once the workstation is booted up and the application is running the 'Operator" must login to the application. The users who login to the app must have a valid account on the domain. I need to validate the individual users against the domain security. Many Users will login and logout during the day.
I'm a beginner when it comes to VB. th this. I have a Windows Application that I'm making for a friend. It's written in VB and connects to a SQL Server database. My problem is that when a user enters their username and password, then clicks on the OK button (all in a Login form that Visual Studio has a template for), the connection string is verified and connects, but for some reason
in an winForm app in VS2010 win 7 compiling to x86, I try to do what Alvas.Audio seems to work. See (c# ex: [URL] for reference.
Dim data() As Byte = wr.ReadData(second * i, second)
The result give me data.length()=0. I do not have any exception, I can read format from it and whatever reader I use I got this problem.EDIT : After some tests, it seems like the uncompressed file I create in the first step (in PCM format, with .wav extension) can not be recognized by the Alvas.audio library for the second step. I must miss something around Audio file markups or something alike.
Here is the code that might be the source (basically this is step 1):
Dim functOut As String = String.Empty Dim wr As Alvas.Audio.IAudioReader = Nothing Dim fs As IO.FileStream = Nothing
[code]....
How can I write the resulted stream to be sure I can read it again later?
Im making a desktop player for a online web radio, and for the program I wanna make it show all the stream info. Like the stream name, and such. However I dont know how to do this? I looked everywhere
The server url is setup like this "[URL]" And it has all the stream info and that there. So is there a way I can get the info from there onto like say a label? Live updates btw.
I'm learning about GAC and signing assembly! And I have some problems...1. I make a DLL having some basic functions in ONE SOLUTION (Signed and Compile)2. Then, I make a FormApp, add a reference to this DLL and using its function to do somethings in OTHER SOLUTION. No error appears!3. I run this project, so I get an error:A call to PInvoke function 'MyDLL.LunarDate:: ' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature.
I tried 4 possible abilities that I can image: 1. I unsign DLL and re-add it to FormApp : It's OK 2. I sign FormApp with same pnk : The same error
I'm searching for a way to validate (or bypass validation for) self-signed SSL certificates using VB .Net. I found code to do this in C# and tried converting it into VB code, but I'm not having any luck.
Here is the C# code. Here is what I tried:
Imports System Imports System.Net Imports System.Security.Cryptography.X509Certificates
I have an array of Bytes. Most of these are interpreted as Unsigned. On certain occasions I need to interprete the byte as signed. Why can't Byte convert to SByte? What I'm doing: I'm trying to program a disassembler for an 8-bit video game ROM. My program reads the ROM and processes each instruction. The instructions are interpreted as unsigned. Some arguments for instructions would be treated by two's complement in the original hardware, however, to make a signed number.
I'm working with byte arrays and building and disassembling Int16/UInt16 and Int32/UInt32 from them. I'd like to not worry about the Sign bit until I return the final value and just have the code return the appropriate value for the data type that was requested to be converted to/from the byte array
Looking for some .net snippet on accessing what users are logged into a domain. I have looked through all the AD namespace and okay with that in getting static items. Specifically, NOT looking for current logged in user for a given machine(have that as well). Looking for a list of users that are currently signed into a Domain.Essentially, I want to pass a user (or list of users) to a method that will check to see if the user passed in, is currently logged into the network (AD).
I have query that involves a cross-language operation, namely converting 4 SBytes to a signed integer. The source language for this operation is Java, which utilizes the ByteBuffer in order to extract a signed integer from the data stream. The inner workings of ByteBuffer are at best a black box to me, as I haven't been able to find any hints to what actually goes on when Java extracts the integer. [Code]
I'm looking for a way to locate signature field on PDF using VB.Net Or JavaScript and Acrobat and then I want to check if it is signed or not. Here is what I have so far:
Dim page As Acrobat.CAcroPDPage Dim annot As Acrobat.CAcroPDAnnot page = acroPDDoc.AcquirePage(0)
[Code]....
Im finding the annotations but I dont know how to check if it is signature field or not.
I need to be able to write signed bytes to a serial port using SerialPort.Write() method, except that method only takes byte[] arrays of unsigned bytes, how would i write a signed byte to the serial port?For what I'm working on the particular command takes values from -1700 to 1700.
How can I write a signed byte (sbyte) to unmanaged memory using VB.NET? I can use Marshal.WriteByte() to write an unsigned byte, but there doesn't appear to be an overload for signed bytes.
I have a problem with the cryptostream, if i write the stream to a memorystream the memory that the stream used is still alocated and i have no way of unalocating it.what am i missingdoing wrong? im using-using on the streams,readers and crypto stuffs so the framework should shut them all down right? i tryed calling .close and .dispose but nothing ,in fact i moved it all over I have provided the sub that im using for the encrytion im in .net 4.5 so there is a lil async stuff but i know thats not the problem coz i moved this code out of my main app(.net 4) for testing to see if i could fix the problem.[code...]
I'm sending an http request through a proxy using tcp, and then using a streamreader to read the netstream...The streamreader is supposed read each line up to </html> , however it doesn't seem to be waiting for the packet/response to be fully received, as it always returns only the first 5-10 lines of HTML.If I add a breakpoint at the line "Using sr", and pause it there for a few seconds and then continue the execution, it will return the full HTML up to the </html> as it should.This is the part of my code which reads the response.
Dim sendbytes As Byte() sendbytes = System.Text.Encoding.ASCII.GetBytes(ReqHeaders) netstream = tcp.GetStream() netstream.Write(sendbytes, 0, sendbytes.Length)
Since I sign my project .exe files with my code signing certificate, I want to check in my application MainForm_Load if the executable is signed and the signature is valid?If not signed or signature has been tampered it must exit the code.
I have been trying to compute the checksum for a line of hex code. This is to create a hex file which will be loaded onto an embedded micro.Some of you guys may not know how this is done so very briefly:
The underlined bytes are taken and summed. (in this case the decimal 960). and the bold is the checksum Only the 8LSB (or single least significant byte) is needed to compute the checksum... which in this case, 960 = 03C0 in hex, so only C0 is needed.Two's complement is then taken:
step 1) logical not of C0 which is step 2) add one (integer) BIN...........DEC...HEX
[code]....
So here is the code I have been using: (quick mention that in the string passed, the hex bytes are all grouped together, there are no space characters)
Public Sub CreateLine(ByVal Data As String) 'Dim BDataArray(DataLength) As Byte Dim IDataArray(Data.Length) As Integer
[code]....
where i get into trouble is where i commented 'i get into trouble'. My code works, but it's rather crude Now, in that line i first convert the hex value (string) "SChecksum" into an integer. I want to NOT this, so I get my step 2 from my explanation. However, the results appears to be a signed logical NOT. which gives me the wrong answer. My hashed togther version simply subtracts 256 before the not, in order to give me the correct answer.
Basically, I would love for someone to chime in and point out the flaws in my function, and push me towards figuring out the 'proper' way of doing this. Also I can't quite wrap my head around what would happen in the case a string were passed to my function that is over 16 bits, but I imagine I would have to subtract a larger value than 256, before doing the NOT in this case?(whilst we're on the subject of functions, I've used a 'sub', in which case should I used a sub, and which case should I use a function?).
I am developing a VB.NET 2008 application, consisting of a main EXE application and several resource DLLs.I am trouble with two functions for the DLL:
1) one function to get a list of all files in the resources of the DLL.
2) one function to return 'by name' a resource file as a System.IO.Stream type.
NOTE: The files will not be "Embedded Resource" (this doubles the size of the DLL), so I think cannot use 'GetManifestResourceStream'.
I currently use:
Return New System.IO.MemoryStream(My.Resources.MyFileName)
but I want it to be called by name.I am adding the resources using the VS 2008 "Resources" tab, from the My Project screen, I'm not manually editing Resources.resxAs I said before, it works with:
Return New System.IO.MemoryStream(My.Resources.MyFileName)
but I need to get the resources by name, which also works by using
GetMAnifestResourceStream
but this requires to set the resources Build Action to "Embedded Resource", which doubles the size of my DLL file.I currently use "None" as Build Action, but I can use any Build Action that does not increase the file size more than the actual resources size.
