/// <summary>
/// Called to serialize this context.
/// </summary>
/// <param name="info"><see cref="SerializationInfo"/> container for storing data. Cannot be null.</param>
/// <param name="context"><see cref="StreamingContext"/> contains the context for streaming and optionally additional user data.</param>
/// <exception cref="ArgumentNullException"> thrown if 'info' is null.</exception>
public virtual void GetObjectData(SerializationInfo info, StreamingContext context)
{
if (_tokenBytes != null)
{
info.AddValue(_tokenTypeKey, _byteTokenType);
info.AddValue(_tokenKey, _tokenBytes);
}
else if (_tokenString != null)
{
info.AddValue(_tokenTypeKey, _stringTokenType);
info.AddValue(_tokenKey, _tokenString);
}
else if (_token != null && _tokenHandler != null)
{
using (MemoryStream ms = new MemoryStream())
{
info.AddValue(_tokenTypeKey, _securityTokenType);
using (XmlDictionaryWriter writer = XmlDictionaryWriter.CreateTextWriter(ms, Text.Encoding.UTF8, false))
{
_tokenHandler.WriteToken(writer, _token);
writer.Flush();
info.AddValue(_tokenKey, Convert.ToBase64String(ms.GetBuffer(), 0, (int)ms.Length));
}
}
}
}
/// <summary>
/// Writes a <see cref="EncryptedSecurityToken"/> using the xmlWriter.
/// </summary>
/// <param name="writer">The XmlWriter to which the encrypted token is written.</param>
/// <param name="token">The <see cref="SecurityToken"/> which must be an instance of <see cref="EncryptedSecurityToken"/>.</param>
/// <exception cref="ArgumentNullException">The input prameter 'writer' is null.</exception>
/// <exception cref="ArgumentNullException">The input prameter 'token' is null.</exception>
/// <exception cref="ArgumentException">The <see cref="SecurityToken"/> is not an instance of <see cref="EncryptedSecurityToken"/>.</exception>
/// <exception cref="InvalidOperationException">The property 'Configuration' is null. This property is required for obtaining keys for encryption.</exception>
/// <exception cref="InvalidOperationException">The ContaingCollection was unable to find a <see cref="SecurityTokenHandler"/> that is able to write
/// the <see cref="SecurityToken"/> returned by 'EncryptedSecurityToken.Token'.</exception>
/// <exception cref="SecurityTokenException">The property 'EncryptinCredentials.SecurityKey is not a <see cref="SymmetricSecurityKey"/></exception>
public override void WriteToken(XmlWriter writer, SecurityToken token)
{
if (null == writer)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("writer");
}
if (null == token)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("token");
}
EncryptedSecurityToken encryptedToken = token as EncryptedSecurityToken;
if (null == encryptedToken)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument("token", SR.GetString(SR.ID4024));
}
if (this.ContainingCollection == null)
{
throw DiagnosticUtility.ThrowHelperInvalidOperation(SR.GetString(SR.ID4279));
}
//
// This implementation simply wraps the token in xenc:EncryptedData
//
EncryptedDataElement encryptedData = new EncryptedDataElement(KeyInfoSerializer);
using (MemoryStream plaintextStream = new MemoryStream())
{
//
// Buffer the plaintext
//
using (XmlDictionaryWriter plaintextWriter = XmlDictionaryWriter.CreateTextWriter(plaintextStream, Encoding.UTF8, false))
{
SecurityTokenHandler securityTokenHandler = this.ContainingCollection[encryptedToken.Token.GetType()];
if (securityTokenHandler != null)
{
securityTokenHandler.WriteToken(plaintextWriter, encryptedToken.Token);
}
else
{
throw DiagnosticUtility.ThrowHelperInvalidOperation(SR.GetString(SR.ID4224, encryptedToken.Token.GetType()));
}
}
//
// Set up the EncryptedData element
//
EncryptingCredentials encryptingCredentials = encryptedToken.EncryptingCredentials;
encryptedData.Type = XmlEncryptionConstants.EncryptedDataTypes.Element;
encryptedData.KeyIdentifier = encryptingCredentials.SecurityKeyIdentifier;
encryptedData.Algorithm = encryptingCredentials.Algorithm;
//
// Get the encryption key, which must be symmetric
//
SymmetricSecurityKey encryptingKey = encryptingCredentials.SecurityKey as SymmetricSecurityKey;
if (encryptingKey == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityTokenException(SR.GetString(SR.ID3064)));
}
//
// Do the actual encryption
//
using (SymmetricAlgorithm symmetricAlgorithm = encryptingKey.GetSymmetricAlgorithm(encryptingCredentials.Algorithm))
{
byte[] plainTextBytes = plaintextStream.GetBuffer();
DebugEncryptedTokenClearText(plainTextBytes, Encoding.UTF8);
encryptedData.Encrypt(symmetricAlgorithm, plainTextBytes, 0, (int)plaintextStream.Length);
}
}
//
// Write the EncryptedData element
//
encryptedData.WriteXml(writer, KeyInfoSerializer);
}
private void RunWriteXmlWriterVariation(XmlWriter writer, SecurityToken token, SecurityTokenHandler tokenHandler, ExpectedException ee)
{
try
{
tokenHandler.WriteToken(writer, token);
ee.ProcessNoException();
}
catch(Exception ex)
{
ee.ProcessException(ex);
}
}
public static string CreateToken(SecurityTokenDescriptor securityTokenDescriptor, SecurityTokenHandler tokenHandler)
{
SecurityToken securityToken = tokenHandler.CreateToken(securityTokenDescriptor);
StringBuilder sb = new StringBuilder();
XmlWriter writer = XmlWriter.Create(sb);
tokenHandler.WriteToken(writer, securityToken);
writer.Flush();
writer.Close();
return sb.ToString();
}
public static string CreateJwtToken(SecurityTokenDescriptor securityTokenDescriptor, SecurityTokenHandler tokenHandler)
{
return tokenHandler.WriteToken(tokenHandler.CreateToken(securityTokenDescriptor));
}
