85 lines
2.7 KiB
C#
85 lines
2.7 KiB
C#
//------------------------------------------------------------
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//------------------------------------------------------------
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namespace System.IdentityModel
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{
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using System;
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using System.Xml;
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internal class CipherDataElement
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{
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byte[] _iv;
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byte[] _cipherText;
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public byte[] CipherValue
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{
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get
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{
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if ( _iv != null )
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{
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byte[] buffer = new byte[_iv.Length + _cipherText.Length];
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Buffer.BlockCopy( _iv, 0, buffer, 0, _iv.Length );
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Buffer.BlockCopy( _cipherText, 0, buffer, _iv.Length, _cipherText.Length );
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_iv = null;
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}
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return _cipherText;
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}
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set
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{
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_cipherText = value;
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}
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}
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public void ReadXml( XmlDictionaryReader reader )
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{
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if ( reader == null )
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{
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throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull( "reader" );
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}
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reader.MoveToContent();
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if ( !reader.IsStartElement( XmlEncryptionConstants.Elements.CipherData, XmlEncryptionConstants.Namespace ) )
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{
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throw DiagnosticUtility.ThrowHelperXml( reader, SR.GetString( SR.ID4188 ) );
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}
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reader.ReadStartElement( XmlEncryptionConstants.Elements.CipherData, XmlEncryptionConstants.Namespace );
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reader.ReadStartElement( XmlEncryptionConstants.Elements.CipherValue, XmlEncryptionConstants.Namespace );
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_cipherText = reader.ReadContentAsBase64();
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_iv = null;
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// <CipherValue>
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reader.MoveToContent();
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reader.ReadEndElement();
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// <CipherData>
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reader.MoveToContent();
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reader.ReadEndElement();
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}
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public void SetCipherValueFragments( byte[] iv, byte[] cipherText )
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{
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_iv = iv;
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_cipherText = cipherText;
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}
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public void WriteXml( XmlWriter writer )
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{
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writer.WriteStartElement( XmlEncryptionConstants.Prefix, XmlEncryptionConstants.Elements.CipherData, XmlEncryptionConstants.Namespace );
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writer.WriteStartElement( XmlEncryptionConstants.Prefix, XmlEncryptionConstants.Elements.CipherValue, XmlEncryptionConstants.Namespace );
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if ( _iv != null )
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writer.WriteBase64( _iv, 0, _iv.Length );
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writer.WriteBase64( _cipherText, 0, _cipherText.Length );
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writer.WriteEndElement(); // CipherValue
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writer.WriteEndElement(); // CipherData
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}
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}
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}
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