public string GetHash(byte[] chunkdata)
{
HashTableHashing.SuperFastHashSimple sfh = new HashTableHashing.SuperFastHashSimple();
HashTableHashing.MurmurHash2Simple mm2h = new HashTableHashing.MurmurHash2Simple();
xxHash xxhash = new xxHash();
xxhash.Init();
xxhash.Update(chunkdata, chunkdata.Count());
string hash = "";
uint h1 = sfh.Hash(chunkdata);
uint h2 = mm2h.Hash(chunkdata);
uint h3 = xxhash.Digest();
BigInteger h = (BigInteger)h1 * (BigInteger)h2 * (BigInteger)h3;
hash = h.ToString() + h1.ToString() + h2.ToString() + h3.ToString();
// byte array representation of that string
byte[] encodedhash = new UTF8Encoding().GetBytes(hash);
// need MD5 to calculate the hash
byte[] md5hash = ((HashAlgorithm)CryptoConfig.CreateFromName("MD5")).ComputeHash(encodedhash);
// string representation (similar to UNIX format)
string encoded = BitConverter.ToString(md5hash)
// without dashes
.Replace("-", string.Empty)
// make lowercase
.ToLower();
return(encoded);
}
public string GetHash(byte[] chunkdata)
{
HashTableHashing.SuperFastHashSimple sfh = new HashTableHashing.SuperFastHashSimple();
HashTableHashing.MurmurHash2Simple mm2h = new HashTableHashing.MurmurHash2Simple();
xxHash xxhash = new xxHash();
xxhash.Init();
xxhash.Update(chunkdata, chunkdata.Count());
string hash = "";
uint h1 = sfh.Hash(chunkdata);
uint h2 = mm2h.Hash(chunkdata);
uint h3 = xxhash.Digest();
BigInteger h = (BigInteger)h1 * (BigInteger)h2 * (BigInteger)h3;
hash = h.ToString() + h1.ToString()+h2.ToString()+h3.ToString();
// byte array representation of that string
byte[] encodedhash = new UTF8Encoding().GetBytes(hash);
// need MD5 to calculate the hash
byte[] md5hash = ((HashAlgorithm)CryptoConfig.CreateFromName("MD5")).ComputeHash(encodedhash);
// string representation (similar to UNIX format)
string encoded = BitConverter.ToString(md5hash)
// without dashes
.Replace("-", string.Empty)
// make lowercase
.ToLower();
return encoded;
}
