コード例 #1
0
ファイル: SMB2Cryptography.cs プロジェクト: SonnyX/SMB-Client
        public static byte[] EncryptMessage(byte[] key, byte[] nonce, byte[] message, ulong sessionID, out byte[] signature)
        {
            SMB2TransformHeader transformHeader = CreateTransformHeader(nonce, message.Length, sessionID);

            byte[] associatedata = transformHeader.GetAssociatedData();
            return(AesCcm.Encrypt(key, nonce, message, associatedata, SMB2TransformHeader.SignatureLength, out signature));
        }
コード例 #2
0
ファイル: SMB2Cryptography.cs プロジェクト: SonnyX/SMB-Client
        /// <summary>
        /// Encyrpt message and prefix with SMB2 TransformHeader
        /// </summary>
        public static byte[] TransformMessage(byte[] key, byte[] message, ulong sessionID)
        {
            byte[] nonce                        = GenerateAesCcmNonce();
            byte[] encryptedMessage             = EncryptMessage(key, nonce, message, sessionID, out byte[] signature);
            SMB2TransformHeader transformHeader = CreateTransformHeader(nonce, message.Length, sessionID);

            transformHeader.Signature = signature;

            byte[] buffer = new byte[SMB2TransformHeader.Length + message.Length];
            transformHeader.WriteBytes(buffer, 0);
            ByteWriter.WriteBytes(buffer, SMB2TransformHeader.Length, encryptedMessage);
            return(buffer);
        }
コード例 #3
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        private static SMB2TransformHeader CreateTransformHeader(byte[] nonce, int originalMessageLength, ulong sessionID)
        {
            byte[] nonceWithPadding = new byte[SMB2TransformHeader.NonceLength];
            Array.Copy(nonce, nonceWithPadding, nonce.Length);

            SMB2TransformHeader transformHeader = new SMB2TransformHeader();

            transformHeader.Nonce = nonceWithPadding;
            transformHeader.OriginalMessageSize = (uint)originalMessageLength;
            transformHeader.Flags     = SMB2TransformHeaderFlags.Encrypted;
            transformHeader.SessionId = sessionID;

            return(transformHeader);
        }
コード例 #4
0
ファイル: SMB2Cryptography.cs プロジェクト: SonnyX/SMB-Client
 public static byte[] DecryptMessage(byte[] key, SMB2TransformHeader transformHeader, byte[] encryptedMessage)
 {
     byte[] associatedData = transformHeader.GetAssociatedData();
     byte[] aesCcmNonce    = ByteReader.ReadBytes(transformHeader.Nonce, 0, AesCcmNonceLength);
     return(AesCcm.DecryptAndAuthenticate(key, aesCcmNonce, encryptedMessage, associatedData, transformHeader.Signature));
 }