Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / Configuration / StrongNameUtility.cs / 1 / StrongNameUtility.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.Configuration { using System.Diagnostics; using System.IO; using System.Runtime.InteropServices; using System.Security.Permissions; internal class StrongNameUtility { // Help class shouldn't be instantiated. private StrongNameUtility() { } /// Free the buffer allocated by strong name functions /// /// address of memory to free [DllImport("mscoree.dll")] internal extern static void StrongNameFreeBuffer(IntPtr pbMemory); ////// Return the last error /// ///error information for the last strong name call [DllImport("mscoree.dll")] internal extern static int StrongNameErrorInfo(); ////// Generate a new key pair for strong name use /// /// desired key container name /// flags /// [out] generated public / private key blob /// [out] size of the generated blob ///true if the key was generated, false if there was an error [DllImport("mscoree.dll")] internal extern static bool StrongNameKeyGen([MarshalAs(UnmanagedType.LPWStr)]string wszKeyContainer, uint dwFlags, [Out]out IntPtr ppbKeyBlob, [Out]out long pcbKeyBlob); internal static bool GenerateStrongNameFile(string filename) { // variables that hold the unmanaged key IntPtr keyBlob = IntPtr.Zero; long generatedSize = 0; // create the key bool createdKey = StrongNameKeyGen(null, 0 /*No flags. 1 is to save the key in the key container */, out keyBlob, out generatedSize); // if there was a problem, translate it and report it if (!createdKey || keyBlob == IntPtr.Zero) { throw Marshal.GetExceptionForHR(StrongNameErrorInfo()); } try { Debug.Assert(keyBlob != IntPtr.Zero); // make sure the key size makes sense Debug.Assert(generatedSize > 0 && generatedSize <= Int32.MaxValue); if (generatedSize <= 0 || generatedSize > Int32.MaxValue) { throw new InvalidOperationException(SR.GetString(SR.Browser_InvalidStrongNameKey)); } // get the key into managed memory byte[] key = new byte[generatedSize]; Marshal.Copy(keyBlob, key, 0, (int)generatedSize); // write the key to the specified file using (FileStream snkStream = new FileStream(filename, FileMode.Create, FileAccess.Write)) { using (BinaryWriter snkWriter = new BinaryWriter(snkStream)) { snkWriter.Write(key); } } } finally { // release the unmanaged memory the key resides in if (keyBlob != IntPtr.Zero) { StrongNameFreeBuffer(keyBlob); } } return true; } } }
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