internal static IntPtr ImportRsaPublicKey(byte[] rawData)
{
CryptoProvider provider = new CryptoProvider();
IntPtr nativeStructure = IntPtr.Zero;
int nativeStructureSize = 0;
try {
if (!Advapi32.CryptDecodeObjectEx(CertificateEncodingType.X509Asn,
InteropHelpers.GetWellKnownOIDPointer(InteropHelpers.WellKnownOIDs.X509PublicKeyInfo),
rawData, rawData.Length, Advapi32.EncodingFlags.AllocateMemory, IntPtr.Zero,
ref nativeStructure, ref nativeStructureSize))
{
throw new CryptographyException((WinErrors)(uint)Marshal.GetLastWin32Error());
}
IntPtr result = IntPtr.Zero;
if (!Crypt32.CryptImportPublicKeyInfo(provider.Handle, CertificateEncodingType.X509Asn,
nativeStructure, out result))
{
throw new CryptographyException((WinErrors)(uint)Marshal.GetLastWin32Error());
}
return(result);
}
finally {
if (IntPtr.Zero != nativeStructure)
{
if (IntPtr.Zero != Kernel32.LocalFree(nativeStructure))
{
throw new InteropException(Marshal.GetLastWin32Error());
}
}
provider.Dispose();
}
}