在内存System.Drawing.
Image中需要MD5哈希
解决方法
这是一个基本的片段.有关一些问题,另请参阅@JaredReisinger的评论.
using System.Security.Cryptography;
using System.Text;
using System.Drawing.Imaging;
// ...
// get the bytes from the image
byte[] bytes = null;
using( MemoryStream ms = new MemoryStream() )
{
image.Save(ms,ImageFormat.Gif); // gif for example
bytes = ms.ToArray();
}
// hash the bytes
MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
byte[] hash = md5.ComputeHash(bytes);
// make a hex string of the hash for display or whatever
StringBuilder sb = new StringBuilder();
foreach (byte b in hash)
{
sb.Append(b.ToString("x2").ToLower());
}
