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
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I went to load an app I was working on before my system died a few days back and I loaded up VB Express 2010 .Net, opened my project and saw this error ...
Error1Unable to find manifest signing certificate in the certificate store.HexHelperProject
If this is related to the Security Certificates stored by XP, then I'm in trouble as they are GONE. Must I start a new project and rebuild this whole app?
I am having an issue getting the below error. This error is in a small mail app using smtpClient. I had this working on this same computer but had to reformat and now I am getting the error. The error does not display anymore info then what is below and do not know where or how to fix it.error: Unable to find manifest signing certificate in the certificate store.
View 2 RepliesI've got an error: "Unable to find manifest signing certificate in the certificate store"
View 3 Repliesi m getting problem inh my project, which in VB.NET.Actually i was developing a small software, to be familier with visual basic.NET, as i was coding with Visual Basic.everything was running very fine, day before i installed winXp again ( freash installeation). Then simply VS 2005,with out any error.Now i m able to open, my project, i can edit it, but if i try to build the executable, or compilation. it is giving strange error.below what error IDE is giving Code:
View 9 RepliesI'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
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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.
View 8 RepliesI'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
View 3 RepliesI have an VB.Net/C# application that allows programatically:
Creates an RTF document
Open it up in Microsoft Word
Runs a Word macro that exists in the Word Template using code like this:
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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).
View 6 RepliesI 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]
View 2 Replieshere know how to do to sign a file with certificate chain and crl embedded?I don't have ideia how to do that.
View 5 RepliesI'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)
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Im finding the annotations but I dont know how to check if it is signature field or not.
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?
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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.
View 1 RepliesHow 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.
View 1 RepliesNewbie 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.
View 1 RepliesOne to accept only file word and pdf file and the other to accept only images(.jg|.bmp|.png|.gif)
View 1 RepliesSince 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.
View 2 RepliesI 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)
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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)?
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
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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:
a line of hex bytes:
: 10 01 00 00 21 46 01 36 01 21 47 01 36 00 7E FE 09 D2 19 01 40
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
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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
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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?).
We have somewhat bureaucratic way of making new users to our system. I noticed I had to write same info over and over again to different places (such as AD and our databases). So I desided to make a little application that inserts the info to all the right places with one click. Now I can create new user with one form and push of a button except the client certificate. For that I must login to our certserv and fill in a form.
Is there an easy way to make client sertificate request to the certserv so that it would give me the certificate automatically? I tried to google about it and got some info about the system.security.cryptography, but got stuck before getting any near of requesting new certificate.
I am trying to get OpenSSL.net to 1) create a key pair to use for CA signing and 2) create and sign certificates using this CA. I have managed to create an RSA/SHA1 X509CertificateAuthority, and have created a X509Request and keys, but I am running into problems actually signing the request.
'create the request and request key
Dim rsa As OpenSSL.Crypto.RSA = New OpenSSL.Crypto.RSA()
rsa.GenerateKeys(1024, 65569, Nothing, Nothing)
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I am getting an OpenSslException on the line noted above, with the message error:0606B06E:digital envelope routines:EVP_SignFinal:wrong public key type error:0D0C3006:asn1 encoding routines:ASN1_item_sign:EVP lib
How can protect my library with certificate?
I mean, My project is library based. So one very important dll should be under my control. I have to create a certificate for this dll. this certificate will be date wise. with expiry date. to run that project, the user must run the certificate.
how can i control it.
I am loading a certificate from string like this:
public static void Test()
{
byte[] arrayCertificate;
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But this certificate doesn't have a "Subject Unique Identifier" Take a look at this:
[URL] (The part of Structure of a certificate)
And I want to know how can I read that value from my .NET code (I looked that I can get SerialNumber, Thumbprints and others but there is no Subject UID anywhere).
If anyone can share an openssl command to include this UID for the certificate :-) (pfx one)
Using Visual Studio, how can I find out if a certificate from MY store has the property Encrypting File System selected?
View 2 RepliesI try to run my Authenticode signed app on a clean Vista PC (not internet connection available ever). I have a look in Internet Explorer if the root certificate (Trustcenter) is there, and it is not. I get the message that the reference could not be resolved, and when I click file properties and have a look at the certificate, it says "The certificate for the signature could not be confirmed". Is that a normal behaviour? I mean does the computer need to have the root certificate from Trustcenter installed?
View 1 RepliesI have programmed succesfully with VB 4.0 for years and have recently started to "Update" myself with Visual Basic 2005. I tried to build an application to distribute via CD. I received the following error:
Error 2 SignTool reported an error 'Failed to sign binReleaseCounting Stewards data entry.publish\setup.exe. SignTool Error: ISignedCode::Sign returned error: 0x80880253
The signer's certificate is not valid for signing. SignTool Error: An error occurred while attempting to sign: binReleaseCounting Stewards data entry.publish\setup.exe
I am totally "out to lunch." I have no clue of what this is about and cannot find anything in my references which address it. I have found no code on line that enlightens me. Is there a simple explanation and/or fix? Where can I learn more in order to avoid this in the future?
You can install certificate into certificate store using Wizard in certmgr.msc (Right click install)? Does anyone knows how to "cleanly" remove all the certificate by either using wizard/Code (pref.) /Script ?
I want to be able to remove everything (that I have installed earlier) from the LocalMachine and/or CurrentUser Store without leaving any residue.