private static byte[] GetHash(string password)
{
SHA384 sha = new SHA384CryptoServiceProvider();
try
{
return(sha.ComputeHash(Encoding.UTF8.GetBytes(password)));
}
finally
{
sha.Dispose();
}
}
/// <summary>
/// Hash 值检查
/// </summary>
/// <param name="resFile">文件路径</param>
/// <param name="type">Hash 值的类型</param>
public CheckHash(string resFile, HashType type)
{
hashValue = string.Empty;
byte[] retVal = null;
FileStream file = new FileStream(resFile, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
switch (type)
{
case HashType.MD5:
MD5CryptoServiceProvider MD5Hash = new MD5CryptoServiceProvider();
retVal = MD5Hash.ComputeHash(file);
MD5Hash.Dispose();
break;
case HashType.SHA1:
SHA1CryptoServiceProvider SHA1Hash = new SHA1CryptoServiceProvider();
retVal = SHA1Hash.ComputeHash(file);
SHA1Hash.Dispose();
break;
case HashType.SHA256:
SHA256CryptoServiceProvider SHA256Hash = new SHA256CryptoServiceProvider();
retVal = SHA256Hash.ComputeHash(file);
SHA256Hash.Dispose();
break;
case HashType.SHA384:
SHA384CryptoServiceProvider SHA384Hash = new SHA384CryptoServiceProvider();
retVal = SHA384Hash.ComputeHash(file);
SHA384Hash.Dispose();
break;
case HashType.SHA512:
SHA512CryptoServiceProvider SHA512Hash = new SHA512CryptoServiceProvider();
retVal = SHA512Hash.ComputeHash(file);
SHA512Hash.Dispose();
break;
}
file.Close();
StringBuilder sb = new StringBuilder();
for (int i = 0; i < retVal.Length; i++)
{
sb.Append(retVal[i].ToString("x2"));
}
hashValue = sb.ToString();
}
public void ComputedSeedTest(string toEncrypt)
{
string initialSeed = "w3ry78vnb930jsxP-5q0nG7Rp2Kl3B8";
string[] seedParts = initialSeed.Split('-');
SHA384CryptoServiceProvider sha = new SHA384CryptoServiceProvider();
byte[] seedPart1 = sha.ComputeHash(Encoding.UTF8.GetBytes(seedParts[0]));
byte[] seedPart2 = sha.ComputeHash(Encoding.UTF8.GetBytes(seedParts[1]));
sha.Dispose();
byte[] seedBytes = new byte[seedPart1.Length + seedPart2.Length];
seedPart2.CopyTo(seedBytes, 0);
seedPart1.CopyTo(seedBytes, seedPart2.Length);
string seed1 = Convert.ToBase64String(seedBytes);
string[] seedParts2 = initialSeed.Split('-');
byte[] seedPart3, seedPart4;
using (SHA384CryptoServiceProvider sha2 = new SHA384CryptoServiceProvider())
{
seedPart3 = sha2.ComputeHash(Encoding.UTF8.GetBytes(seedParts[0]));
seedPart4 = sha2.ComputeHash(Encoding.UTF8.GetBytes(seedParts[1]));
}
byte[] seedBytes2 = new byte[seedPart3.Length + seedPart4.Length];
seedPart4.CopyTo(seedBytes2, 0);
seedPart3.CopyTo(seedBytes2, seedPart4.Length);
string seed2 = Convert.ToBase64String(seedBytes2);
Assert.That(seed1, Is.EqualTo(seed2));
// create our TripleDesProvider objects with our new key
TripleDesProvider tdes1 = new TripleDesProvider(seed1);
TripleDesProvider tdes2 = new TripleDesProvider(seed1);
// test encryption and decription across tdes objects
string cipherText = tdes1.Encrypt(toEncrypt);
string decryptedText = tdes2.Decrypt(cipherText);
Assert.That(decryptedText, Is.EqualTo(toEncrypt));
}
