The PublicKeyFactory is meant to interpret BER encoded key data. It
doesn't sound like that is what you are dealing with though.
You haven't provided a sample of the input below, but looking at the
code it appears the XML is presenting you with the public key as a
series of encoded numbers. If that is the case you need to convert the
elements to BigInteger objects first and then use those to create a
parameters object.
Regards,
David
On 06/12/13 03:35, Bogdan Suvar wrote:
Another exception is EndOfStreamException:
{"DEF length 88 object truncated by 2"}
with the following stack trace:
at Org.BouncyCastle.Asn1.DefiniteLengthInputStream.ToArray()
at Org.BouncyCastle.Asn1.Asn1InputStream.BuildObject(Int32 tag,
Int32 tagNo, Int32 length)
at Org.BouncyCastle.Asn1.Asn1InputStream.ReadObject()
at Org.BouncyCastle.Asn1.Asn1Object.FromByteArray(Byte[] data)
at Org.BouncyCastle.Security.PublicKeyFactory.CreateKey(Byte[]
keyInfoData)
at TestConsole.PGP.xmlStringToPubKey(String xmlString) in
PGP.cs:line 141
at TestConsole.Test.Main(String[] args) in Test.cs:line 22
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly,
String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence
assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext
executionContext, ContextCallback callback, Object state, Boolean
preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext
executionContext, ContextCallback callback, Object state, Boolean
preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext
executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
On 2013-12-05 16:20, Bogdan Suvar wrote:
Hi,
I'm currently trying to create an AsymmetricKeyParameter public key
parameter from an xml string like this:
public static AsymmetricKeyParameter xmlStringToPubKey(string
xmlString)
{
//AsymmetricCipherKeyPair keyPair;
if (String.IsNullOrEmpty(xmlString))
{
Console.WriteLine("Empty XML string received");
return null;
}
else
{
XDocument xdoc = XDocument.Parse(xmlString);
return
PublicKeyFactory.CreateKey(Streamify(xdoc.Descendants("Modulus").First().Value));
}
}
However, I'm getting an exception when calling CreateKey on
PublicKeyFactory obj. xdoc.Descendants returns a string which needs to
be converted into an array of bytes. I've tried different ways to
convert the string:
- Encoding.Unicode.getBytes(xmlString)
- getBytes(xmlString) method I've created to return a byte array from
a string
- Streamify - another method I've created to return a Stream
While I get different exceptions on each of the above methods none
seem to work. Any hints appreciated.
