public static byte[] HashRaw(EHashType type, byte[] bs)
{
if (bs == null) return null;
HashAlgorithm cmd5 = null;
switch (type)
{
case EHashType.Md5: cmd5 = new MD5CryptoServiceProvider(); break;
case EHashType.Sha1: cmd5 = new SHA1CryptoServiceProvider(); break;
case EHashType.Sha256: cmd5 = new SHA256CryptoServiceProvider(); break;
case EHashType.Sha384: cmd5 = new SHA384CryptoServiceProvider(); break;
case EHashType.Sha512: cmd5 = new SHA512CryptoServiceProvider(); break;
}
bs = cmd5.ComputeHash(bs);
cmd5.Dispose();
return bs;
}
public static byte[] HashRaw(EHashType type, Stream bs, bool seekBegin)
{
if (bs == null) return null;
HashAlgorithm cmd5 = null;
switch (type)
{
case EHashType.Md5: cmd5 = new MD5CryptoServiceProvider(); break;
case EHashType.Sha1: cmd5 = new SHA1CryptoServiceProvider(); break;
case EHashType.Sha256: cmd5 = new SHA256CryptoServiceProvider(); break;
case EHashType.Sha384: cmd5 = new SHA384CryptoServiceProvider(); break;
case EHashType.Sha512: cmd5 = new SHA512CryptoServiceProvider(); break;
}
if (seekBegin) bs.Seek(0, SeekOrigin.Begin);
byte[] bsh = cmd5.ComputeHash(bs);
cmd5.Dispose();
return bsh;
}
static byte[] GenerateKey(string RawKey)
{
byte[] WhatToReturn;
SHA512CryptoServiceProvider SCSP = new SHA512CryptoServiceProvider();
SHA256CryptoServiceProvider SCSP256 = new SHA256CryptoServiceProvider();
//Whatever the key is... hash it once.
byte[] ReturnBytes = SCSP.ComputeHash(UnicodeEncoding.ASCII.GetBytes(RawKey.ToCharArray()));
//Rehash the key up to 256 times depending on what key the user chose.
WhatToReturn = ReturnBytes;
for (byte x = 0; x <= ReturnBytes[0]; x++)
WhatToReturn = SCSP.ComputeHash(WhatToReturn);
//Make sure the key size is 32 bytes.
WhatToReturn = SCSP256.ComputeHash(WhatToReturn);
SCSP.Dispose();
SCSP256.Dispose();
//DISPOSE ALL SENSITIVE DATA
Random rd = new Random();
rd.NextBytes(ReturnBytes);
rd = null;
GC.Collect();
//Finish
return WhatToReturn;
}
