private String CalculateFromText(HashType ht, String str)
{
byte[] hashBytes = null;
StringBuilder hashBuilder = new StringBuilder();
switch (ht)
{
case HashType.MD5:
//Compute hash based on source data.
hashBytes = new MD5CryptoServiceProvider().ComputeHash(UTF8Encoding.UTF8.GetBytes(str));
break;
case HashType.MD4:
//Compute hash based on source data.
hashBytes = new Md4().ComputeHash(UTF8Encoding.UTF8.GetBytes(str));
break;
case HashType.ED2K:
//Compute hash based on source data.
hashBytes = new Ed2k().ComputeHash(UTF8Encoding.UTF8.GetBytes(str));
break;
case HashType.CRC32:
hashBytes = new Crc32().ComputeHash(UTF8Encoding.UTF8.GetBytes(str));
break;
case HashType.SHA1:
//Compute hash based on source data.
hashBytes = new SHA1CryptoServiceProvider().ComputeHash(UTF8Encoding.UTF8.GetBytes(str));
break;
case HashType.SHA256:
//Compute hash based on source data.
hashBytes = SHA256.Create().ComputeHash(UTF8Encoding.UTF8.GetBytes(str));
break;
case HashType.SHA384:
//Compute hash based on source data.
hashBytes = SHA384.Create().ComputeHash(UTF8Encoding.UTF8.GetBytes(str));
break;
case HashType.SHA512:
//Compute hash based on source data.
hashBytes = SHA512.Create().ComputeHash(UTF8Encoding.UTF8.GetBytes(str));
break;
case HashType.TTH:
TTH tth = new TTH();
tth.Initialize();
hashBytes = tth.ComputeHash(UTF8Encoding.UTF8.GetBytes(str));
break;
}
foreach (Byte hashByte in hashBytes)
{
hashBuilder.Append(hashByte.ToString("X2").ToLower());
}
return(hashBuilder.ToString());
}
private String CalculateFromFile(HashType ht, String filename)
{
byte[] hashBytes = null;
using (FileStream file = new FileStream(filename, FileMode.Open))
{
switch (ht)
{
case HashType.MD5:
hashBytes = new MD5CryptoServiceProvider().ComputeHash(file);
break;
case HashType.MD4:
hashBytes = new Md4().ComputeHash(file);
break;
case HashType.ED2K:
hashBytes = new Ed2k().ComputeHash(file);
break;
case HashType.CRC32:
hashBytes = new Crc32().ComputeHash(file);
break;
case HashType.SHA1:
hashBytes = new SHA1CryptoServiceProvider().ComputeHash(file);
break;
case HashType.SHA256:
hashBytes = SHA256.Create().ComputeHash(file);
break;
case HashType.SHA384:
hashBytes = SHA384.Create().ComputeHash(file);
break;
case HashType.SHA512:
hashBytes = SHA512.Create().ComputeHash(file);
break;
case HashType.TTH:
TTH tth = new TTH();
tth.Initialize();
hashBytes = tth.ComputeHash(file);
break;
}
}
StringBuilder hashBuilder = new StringBuilder();
foreach (byte hashByte in hashBytes)
{
hashBuilder.Append(hashByte.ToString("x2").ToLower());
}
return(hashBuilder.ToString());
}
