// Decompiled with JetBrains decompiler // Type: Microsoft.InfoCards.EncryptionUtility // Assembly: infocard, Version=3.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 // MVID: 516D8B44-4448-4D2C-8B8E-FFBB3FFE472B // Assembly location: C:\Users\Administrateur\Downloads\Virusshare-00000-msil\Virus.Win32.Expiro.w-69bb73081eac86b8cf86f45e33515d0095855636967076e2b593d7a30cd80a07.exe using Microsoft.InfoCards.Diagnostics; using System; using System.IdentityModel.Selectors; using System.IdentityModel.Tokens; using System.IO; using System.Security.Cryptography; using System.Security.Cryptography.X509Certificates; using System.ServiceModel.Security; using System.ServiceModel.Security.Tokens; using System.Xml; namespace Microsoft.InfoCards { internal sealed class EncryptionUtility { private EncryptionUtility() { } public static XmlElement EncryptSecurityToken( SecurityToken tokenToBeEncrypted, X509Certificate2 cert, string encryptingAlgorithm, string asymmetricKeyWrapAlgorithm, ProtocolProfile profile) { MemoryStream streamToBeEncrypted = new MemoryStream(); XmlDictionaryWriter dictionaryWriter = XmlDictionaryWriter.CreateDictionaryWriter((XmlWriter) new XmlTextWriter((TextWriter) new StreamWriter((Stream) streamToBeEncrypted))); profile.TokenSerializer.WriteToken((XmlWriter) dictionaryWriter, tokenToBeEncrypted); dictionaryWriter.Flush(); streamToBeEncrypted.Seek(0L, SeekOrigin.Begin); return EncryptionUtility.EncryptToken(streamToBeEncrypted, cert, encryptingAlgorithm, asymmetricKeyWrapAlgorithm, profile); } public static XmlElement EncryptSecurityToken( XmlElement elem, X509Certificate2 cert, string encryptingAlgorithm, string asymmetricKeyWrapAlgorithm, ProtocolProfile profile) { MemoryStream streamToBeEncrypted = new MemoryStream(); XmlDictionaryWriter dictionaryWriter = XmlDictionaryWriter.CreateDictionaryWriter((XmlWriter) new XmlTextWriter((TextWriter) new StreamWriter((Stream) streamToBeEncrypted))); elem.WriteTo((XmlWriter) dictionaryWriter); dictionaryWriter.Flush(); streamToBeEncrypted.Seek(0L, SeekOrigin.Begin); return EncryptionUtility.EncryptToken(streamToBeEncrypted, cert, encryptingAlgorithm, asymmetricKeyWrapAlgorithm, profile); } private static XmlElement EncryptToken( MemoryStream streamToBeEncrypted, X509Certificate2 cert, string encryptingAlgorithm, string asymmetricKeyWrapAlgorithm, ProtocolProfile profile) { InfoCardTrace.ThrowInvalidArgumentConditional(string.IsNullOrEmpty(encryptingAlgorithm), nameof (encryptingAlgorithm)); InfoCardTrace.ThrowInvalidArgumentConditional(null == cert, nameof (cert)); SecurityToken wrappingToken = (SecurityToken) new X509SecurityToken(cert, "id"); SecurityAlgorithmSuite securityAlgorithmSuite1 = SecurityAlgorithmSuite.Default; SecurityAlgorithmSuite securityAlgorithmSuite2; switch (encryptingAlgorithm) { case "http://www.w3.org/2001/04/xmlenc#aes128-cbc": securityAlgorithmSuite2 = SecurityAlgorithmSuite.Basic128; break; case "http://www.w3.org/2001/04/xmlenc#aes192-cbc": securityAlgorithmSuite2 = SecurityAlgorithmSuite.Basic192; break; case "http://www.w3.org/2001/04/xmlenc#aes256-cbc": securityAlgorithmSuite2 = SecurityAlgorithmSuite.Basic256; break; case "http://www.w3.org/2001/04/xmlenc#tripledes-cbc": securityAlgorithmSuite2 = SecurityAlgorithmSuite.TripleDes; break; default: throw InfoCardTrace.ThrowHelperError((Exception) new TokenCreationException(SR.GetString("UnsupportedEncryptionAlgorithm", (object) encryptingAlgorithm))); } SecurityKeyIdentifier wrappingTokenReference = new SecurityKeyIdentifier(new SecurityKeyIdentifierClause[1] { (SecurityKeyIdentifierClause) wrappingToken.CreateKeyIdentifierClause<X509ThumbprintKeyIdentifierClause>() }); byte[] numArray = new byte[securityAlgorithmSuite2.DefaultEncryptionKeyDerivationLength / 8]; new RNGCryptoServiceProvider().GetNonZeroBytes(numArray); WrappedKeySecurityToken keySecurityToken = new WrappedKeySecurityToken(string.Empty, numArray, asymmetricKeyWrapAlgorithm, wrappingToken, wrappingTokenReference); SecurityKeyIdentifier securityKeyIdentifier = new SecurityKeyIdentifier(new SecurityKeyIdentifierClause[1] { (SecurityKeyIdentifierClause) new EncryptedKeyIdentifierClause(keySecurityToken.GetWrappedKey(), keySecurityToken.WrappingAlgorithm, keySecurityToken.WrappingTokenReference) }); SymmetricAlgorithm symmetricAlgorithm = ((SymmetricSecurityKey) keySecurityToken.SecurityKeys[0]).GetSymmetricAlgorithm(encryptingAlgorithm); EncryptedData encryptedData = new EncryptedData(); encryptedData.TokenSerializer = (SecurityTokenSerializer) profile.TokenSerializer; encryptedData.KeyIdentifier = securityKeyIdentifier; encryptedData.EncryptionMethod = encryptingAlgorithm; encryptedData.Type = "http://www.w3.org/2001/04/xmlenc#Element"; encryptedData.SetUpEncryption(symmetricAlgorithm, streamToBeEncrypted.GetBuffer(), 0, Convert.ToInt32(streamToBeEncrypted.Length)); MemoryStream input = new MemoryStream(); XmlDictionaryWriter dictionaryWriter = XmlDictionaryWriter.CreateDictionaryWriter((XmlWriter) new XmlTextWriter((TextWriter) new StreamWriter((Stream) input))); encryptedData.WriteTo((XmlWriter) dictionaryWriter); dictionaryWriter.Flush(); input.Seek(0L, SeekOrigin.Begin); XmlElement xmlElement = (XmlElement) new XmlDocument().ReadNode((XmlReader) Utility.CreateReaderWithQuotas((Stream) input)); Array.Clear((Array) streamToBeEncrypted.GetBuffer(), 0, Convert.ToInt32(streamToBeEncrypted.Length)); Array.Clear((Array) input.GetBuffer(), 0, Convert.ToInt32(input.Length)); streamToBeEncrypted.Close(); input.Close(); return xmlElement; } } }