本文整理汇总了C#中Crc32.TransformBlock方法的典型用法代码示例。如果您正苦于以下问题：C# Crc32.TransformBlock方法的具体用法？C# Crc32.TransformBlock怎么用？C# Crc32.TransformBlock使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Crc32的用法示例。
在下文中一共展示了Crc32.TransformBlock方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: CalculateHashes_here
protected static Hashes CalculateHashes_here(string strPath, OnHashProgress onHashProgress)
{
FileStream fs;
Hashes rhash=new Hashes();
FileInfo fi = new FileInfo(strPath);
fs = fi.OpenRead();
int lChunkSize = 9728000;
//string sHash = "";
long nBytes = (long)fs.Length;
long nBytesRemaining = (long)fs.Length;
int nBytesToRead = 0;
long nBlocks = nBytes / lChunkSize;
long nRemainder = nBytes % lChunkSize; //mod
if (nRemainder > 0)
nBlocks++;
byte[] baED2KHash = new byte[16 * nBlocks];
if (nBytes > lChunkSize)
nBytesToRead = lChunkSize;
else
nBytesToRead = (int)nBytesRemaining;
if (onHashProgress != null)
onHashProgress(strPath, 0);
MD4 md4 = MD4.Create();
MD5 md5 = MD5.Create();
SHA1 sha1 = SHA1.Create();
Crc32 crc32=new Crc32();
byte[] ByteArray = new byte[nBytesToRead];
long iOffSet = 0;
long iChunkCount = 0;
while (nBytesRemaining > 0)
{
iChunkCount++;
Console.WriteLine("Hashing Chunk: " + iChunkCount.ToString());
int nBytesRead = fs.Read(ByteArray, 0, nBytesToRead);
byte[] baHash = md4.ComputeHash(ByteArray, 0, nBytesRead);
md5.TransformBlock(ByteArray, 0, nBytesRead, ByteArray, 0);
sha1.TransformBlock(ByteArray, 0, nBytesRead, ByteArray, 0);
crc32.TransformBlock(ByteArray, 0, nBytesRead, ByteArray, 0);
int percentComplete = (int)((float)iChunkCount / (float)nBlocks * 100);
if (onHashProgress != null)
onHashProgress(strPath, percentComplete);
int j = (int)((iChunkCount - 1) * 16);
for (int i = 0; i < 16; i++)
baED2KHash[j + i] = baHash[i];
iOffSet += lChunkSize;
nBytesRemaining = nBytes - iOffSet;
if (nBytesRemaining < lChunkSize)
nBytesToRead = (int)nBytesRemaining;
}
md5.TransformFinalBlock(ByteArray, 0, 0);
sha1.TransformFinalBlock(ByteArray, 0, 0);
crc32.TransformFinalBlock(ByteArray, 0, 0);
fs.Close();
if (onHashProgress != null)
onHashProgress(strPath, 100);
byte[] baHashFinal = md4.ComputeHash(baED2KHash);
rhash.ed2k = BitConverter.ToString(baHashFinal).Replace("-", "").ToUpper();
rhash.crc32 = BitConverter.ToString(crc32.Hash).Replace("-", "").ToUpper();
rhash.md5 = BitConverter.ToString(md5.Hash).Replace("-", "").ToUpper();
rhash.sha1 = BitConverter.ToString(sha1.Hash).Replace("-", "").ToUpper();
return rhash;
}