Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WCF / infocard / Client / System / IdentityModel / Selectors / InfoCardRSACryptoProvider.cs / 1305376 / InfoCardRSACryptoProvider.cs
//------------------------------------------------------------------------------ // Copyright (c) Microsoft Corporation. All rights reserved. //----------------------------------------------------------------------------- namespace System.IdentityModel.Selectors { using System; using System.ComponentModel; using System.Runtime.InteropServices; using System.Runtime.ConstrainedExecution; using System.Runtime.CompilerServices; using System.Security.Cryptography; using IDT = Microsoft.InfoCards.Diagnostics.InfoCardTrace; using DiagnosticUtility = Microsoft.InfoCards.Diagnostics.DiagnosticUtility; // // For common & resources // using Microsoft.InfoCards; // // Summary: // This class provides indirect access to the private key associated with a released token via InfoCard // native crypto functions. // internal class InfoCardRSACryptoProvider : RSA { AsymmetricCryptoHandle m_cryptoHandle; RpcAsymmetricCryptoParameters m_params; // // Summary: // Given a pointer to a CryptoHandle create a new instance of this class. // public InfoCardRSACryptoProvider( AsymmetricCryptoHandle cryptoHandle ) : base() { m_cryptoHandle = (AsymmetricCryptoHandle)cryptoHandle.Duplicate(); try { m_params = (RpcAsymmetricCryptoParameters) m_cryptoHandle.Parameters; int keySize = m_params.keySize; LegalKeySizesValue = new KeySizes[ 1 ]; KeySizeValue = keySize; LegalKeySizesValue[ 0 ] = new KeySizes( keySize, keySize, 0 ); } catch { m_cryptoHandle.Dispose(); m_cryptoHandle = null; throw; } } public override String SignatureAlgorithm { get { return m_params.signatureAlgorithm; } } public override String KeyExchangeAlgorithm { get { return m_params.keyExchangeAlgorithm; } } public override byte[] EncryptValue( byte[] rgb ) { throw IDT.ThrowHelperError( new NotSupportedException() ); } public override byte[] DecryptValue( byte[] rgb ) { throw IDT.ThrowHelperError( new NotSupportedException() ); } public byte[] Decrypt(byte[] inData, bool fAOEP ) { GlobalAllocSafeHandle pOutData = null; int cbOutData = 0; byte[] outData; IDT.ThrowInvalidArgumentConditional( null == inData, "indata" ); using( HGlobalSafeHandle pInData = HGlobalSafeHandle.Construct( inData.Length ) ) { Marshal.Copy( inData, 0, pInData.DangerousGetHandle(), inData.Length ); int status = CardSpaceSelector.GetShim().m_csShimDecrypt( m_cryptoHandle.InternalHandle, fAOEP, inData.Length, pInData, out cbOutData, out pOutData ); if( 0 != status ) { ExceptionHelper.ThrowIfCardSpaceException( status ); throw IDT.ThrowHelperError( new Win32Exception( status ) ); } pOutData.Length = cbOutData; outData = DiagnosticUtility.Utility.AllocateByteArray( pOutData.Length ); using( pOutData ) { Marshal.Copy( pOutData.DangerousGetHandle(), outData, 0, pOutData.Length ); } } return outData; } public byte[] Encrypt(byte[] inData, bool fAOEP ) { GlobalAllocSafeHandle pOutData = null; int cbOutData = 0; byte[] outData; IDT.ThrowInvalidArgumentConditional( null == inData, "indata" ); using( HGlobalSafeHandle pInData = HGlobalSafeHandle.Construct( inData.Length ) ) { Marshal.Copy( inData, 0, pInData.DangerousGetHandle(), inData.Length ); int status = CardSpaceSelector.GetShim().m_csShimEncrypt( m_cryptoHandle.InternalHandle, fAOEP, inData.Length, pInData, out cbOutData, out pOutData ); if( 0 != status ) { ExceptionHelper.ThrowIfCardSpaceException( status ); throw IDT.ThrowHelperError( new Win32Exception( status ) ); } pOutData.Length = cbOutData; outData = DiagnosticUtility.Utility.AllocateByteArray( pOutData.Length ); Marshal.Copy( pOutData.DangerousGetHandle(), outData, 0, pOutData.Length ); } return outData; } public byte[] SignHash( byte[] hash, string hashAlgOid ) { IDT.ThrowInvalidArgumentConditional( null == hash || 0 == hash.Length, "hash" ); IDT.ThrowInvalidArgumentConditional( String.IsNullOrEmpty( hashAlgOid ), "hashAlgOid" ); int cbSig = 0; GlobalAllocSafeHandle pSig = null; byte[] sig; using( HGlobalSafeHandle pHash = HGlobalSafeHandle.Construct( hash.Length ) ) { using( HGlobalSafeHandle pHashAlgOid = HGlobalSafeHandle.Construct( hashAlgOid ) ) { Marshal.Copy( hash, 0, pHash.DangerousGetHandle(), hash.Length ); RuntimeHelpers.PrepareConstrainedRegions(); int status = CardSpaceSelector.GetShim().m_csShimSignHash( m_cryptoHandle.InternalHandle, hash.Length, pHash, pHashAlgOid, out cbSig, out pSig ); if( 0 != status ) { ExceptionHelper.ThrowIfCardSpaceException( status ); throw IDT.ThrowHelperError( new Win32Exception( status ) ); } pSig.Length = cbSig; sig = DiagnosticUtility.Utility.AllocateByteArray( pSig.Length); using( pSig ) { Marshal.Copy( pSig.DangerousGetHandle(), sig, 0, pSig.Length ); } } } return sig; } public bool VerifyHash( byte[] hash, string hashAlgOid, byte[] sig ) { IDT.ThrowInvalidArgumentConditional( null == hash || 0 == hash.Length, "hash" ); IDT.ThrowInvalidArgumentConditional( String.IsNullOrEmpty( hashAlgOid ), "hashAlgOid" ); IDT.ThrowInvalidArgumentConditional( null == sig || 0 == sig.Length, "sig" ); bool verified = false; using( HGlobalSafeHandle pHash = HGlobalSafeHandle.Construct( hash.Length ) ) { using( HGlobalSafeHandle pHashAlgOid = HGlobalSafeHandle.Construct( hashAlgOid ) ) { Marshal.Copy( hash, 0, pHash.DangerousGetHandle(), hash.Length ); int status = 0; using( HGlobalSafeHandle pSig = HGlobalSafeHandle.Construct( sig.Length ) ) { Marshal.Copy( sig, 0, pSig.DangerousGetHandle(), sig.Length ); status = CardSpaceSelector.GetShim().m_csShimVerifyHash( m_cryptoHandle.InternalHandle, hash.Length, pHash, pHashAlgOid, sig.Length, pSig, out verified); } if( 0 != status ) { ExceptionHelper.ThrowIfCardSpaceException( status ); throw IDT.ThrowHelperError( new Win32Exception( status ) ); } } } return verified; } public override RSAParameters ExportParameters(bool includePrivateParameters) { throw IDT.ThrowHelperError( new NotSupportedException() ); } public override string ToXmlString(bool includePrivateParameters) { throw IDT.ThrowHelperError( new NotSupportedException() ); } public override void FromXmlString(string xmlString) { throw IDT.ThrowHelperError( new NotSupportedException() ); } public override void ImportParameters(System.Security.Cryptography.RSAParameters parameters) { throw IDT.ThrowHelperError( new NotSupportedException() ); } protected override void Dispose(bool disposing) { m_cryptoHandle.Dispose(); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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