public void WriteTest3() { var key = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; var ctr = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; var content = new byte[] { 0x66, 0xe9, 0x4b, 0xd4, 0xef, 0x8a, 0x2c, 0x3b, 0x88, 0x4c, 0xfa, 0x59, 0xca, 0x34, 0x2b, 0x2e }; var expected = new byte[] { 0x66, 0xe9, 0x4b, 0xd4, 0xef, 0x8a, 0x2c, 0x3b, 0x88, 0x4c, 0xfa, 0x59, 0xca, 0x34, 0x2b, 0x2e, 0x58, 0xf3, 0xed, 0xce, 0xfa, 0x7e, 0x30, 0x61, 0x36, 0x7f, 0x1d, 0x57, 0xa4, 0xe7, 0x45, 0x5a }; var ms = new MemoryStream(); ms.Write(content, 0, content.Length); ms.Position = 0; var ctrS = new CtrStream(ms, key, ctr, false); ctrS.Position = 17; ctrS.Write(new byte[] { 0x11, 0x11 }, 0, 2); var actualLength = ctrS.Length; ctrS.Flush(); var flushedLength = ctrS.Length; Assert.IsTrue(ms.ToArray().SequenceEqual(expected)); Assert.AreEqual(32, ctrS.Length); Assert.AreEqual(19, actualLength); Assert.AreEqual(32, flushedLength); Assert.AreEqual(0, ms.Position); }
public void WriteTest1() { var key = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; var ctr = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; var content = new byte[] { 0x66, 0xe9, 0x4b, 0xd4, 0xef, 0x8a, 0x2c, 0x3b, 0x88, 0x4c, 0xfa, 0x59, 0xca, 0x34, 0x2b, 0x2e }; var expected = new byte[] { 0x66, 0xe9, 0x4b, 0xc5, 0xfe, 0x8a, 0x2c, 0x3b, 0x88, 0x4c, 0xfa, 0x59, 0xca, 0x34, 0x2b, 0x2e }; var ms = new MemoryStream(content); var ctrS = new CtrStream(ms, key, ctr, false); ctrS.Position = 3; ctrS.Write(new byte[] { 0x11, 0x11 }, 0, 2); ctrS.Flush(); Assert.IsTrue(ms.ToArray().SequenceEqual(expected)); Assert.AreEqual(5, ctrS.Position); Assert.AreEqual(0, ms.Position); }
private Task <bool> DoCipher(Stream input, Stream output, IProgress <ProgressReport> progress, bool decrypt) { var key = OnRequestKey("AES128 Ctr Key", 32, out var error); if (key == null) { return(Task.Factory.StartNew(() => { progress.Report(new ProgressReport { Percentage = 0, Message = error }); return false; })); } var ctr = OnRequestKey("AES128 Ctr IV", 32, out error); if (ctr == null) { return(Task.Factory.StartNew(() => { progress.Report(new ProgressReport { Percentage = 0, Message = error }); return false; })); } return(Task.Factory.StartNew(() => { progress.Report(new ProgressReport { Percentage = 0, Message = decrypt ? "Decryption..." : "Encryption..." }); using (var cs = new CtrStream(decrypt ? input : output, key, ctr, true)) { var buffer = new byte[0x10000]; var totalLength = decrypt ? cs.Length : input.Length; while (cs.Position < totalLength) { var length = (int)Math.Min(0x10000, totalLength - cs.Position); if (decrypt) { cs.Read(buffer, 0, length); output.Write(buffer, 0, length); } else { input.Read(buffer, 0, length); cs.Write(buffer, 0, length); } progress.Report(new ProgressReport { Percentage = (double)cs.Position / totalLength * 100, Message = decrypt ? "Decryption..." : "Encryption...", }); } } progress.Report(new ProgressReport { Percentage = 100, Message = decrypt ? "Decryption finished." : "Encryption finished." }); return true; })); }