/// <summary> /// Adds a thumbnail /// </summary> /// <param name="img">The image to create the thumbnail from</param> /// <returns>The MD5 of the thumbnail</returns> public static string Add(Stream img, string origPath) { img.Seek(0, SeekOrigin.Begin); string md5Hash; using (var origIMG = Image.FromStream(img)) { double ratio = Math.Min((double)ThumbnailWidth / origIMG.Width, (double)ThumbnailHeight / origIMG.Height); using (var newBMP = new Bitmap((int)Math.Ceiling(origIMG.Width * ratio), (int)Math.Ceiling(origIMG.Height * ratio))) { using (var graph = Graphics.FromImage(newBMP)) { graph.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality; graph.DrawImage(origIMG, 0, 0, (float)Math.Ceiling(origIMG.Width * ratio), (float)Math.Ceiling(origIMG.Height * ratio)); graph.Flush(System.Drawing.Drawing2D.FlushIntention.Sync); using (var stream = new MemoryStream(1024 * 1024)) { newBMP.Save(stream, System.Drawing.Imaging.ImageFormat.Jpeg); stream.Flush(); byte [] bytes = stream.ToArray(); using (var hasher = new System.Security.Cryptography.MD5Cng()) md5Hash = BitConverter.ToString(hasher.ComputeHash(bytes)).Replace("-", ""); File.WriteAllBytes(Path.Combine(Program.Options.ThumbsPath, md5Hash), bytes); thumbs.SetEntry(md5Hash, origPath); bytes = null; } } } } return(md5Hash); }
//md5加密算法 public static string strToMd5(string sequence) { System.Security.Cryptography.MD5 md5 = new System.Security.Cryptography.MD5Cng(); byte[] bytResult = md5.ComputeHash(System.Text.Encoding.GetEncoding("UTF-8").GetBytes(sequence)); //转换成字符串,32位 string strResult = BitConverter.ToString(bytResult).Replace("-", ""); return(strResult); }
public Pepsin(System.Net.HttpListener listener) { m_listener = listener; m_nonces = new Dictionary <string, string>(); m_realms = new Dictionary <string, string>(); m_userRealms = new Dictionary <string, string[]>(); m_users = new Dictionary <string, Password>(); m_MD5Encoder = new System.Security.Cryptography.MD5Cng(); }
internal static byte[] CalcMD5(string SpecFunc, string SpecName, string SpecDev, int RevMaj, int RevMin) { byte[] Md5Buffer = new byte[62]; System.Security.Cryptography.MD5Cng Calc = new System.Security.Cryptography.MD5Cng(); AddToBuffer(Md5Buffer, 0, 20, AllignTo20(SpecFunc)); AddToBuffer(Md5Buffer, 20, 20, AllignTo20(SpecName)); AddToBuffer(Md5Buffer, 40, 20, AllignTo20(SpecDev)); Md5Buffer[60] = (byte)(RevMaj + 0x30); Md5Buffer[61] = (byte)(RevMin + 0x30); return Calc.ComputeHash(Md5Buffer,0, 62); }
public void DrawButton(RectangleF area, Graphics g, bool selected, Guid value) { float size = area.Height - 4; float imageX = area.Width - area.Height + 2; Bitmap[] images = new[] { JONAS, ALI, DANIEL, JUAN }; System.Security.Cryptography.MD5Cng hash = new System.Security.Cryptography.MD5Cng(); Bitmap image = images[hash.ComputeHash(value.ToByteArray())[0] & 3]; g.DrawImage(image, RectangleF.FromLTRB(area.Left + imageX, area.Top + 2, area.Right - 2, area.Bottom - 2)); TextRenderer.DrawText(g, m_parameter.GetName(value), Font, new Point((int)area.X + 2, (int)area.Y + ((int)area.Height - Font.Height) / 2), Color.White); }
public static String Md5(String ch) { using (System.Security.Cryptography.MD5 sha1 = new System.Security.Cryptography.MD5Cng()) { ASCIIEncoding asen = new ASCIIEncoding(); var hash = sha1.ComputeHash(asen.GetBytes(ch)); var s = new StringBuilder(); foreach (byte b in hash) s.Append(b.ToString("x2").ToLower()); return s.ToString() ; } }