盐和哈希方法 [英] salt and hash method

问题描述

好。我的盐值是????我不知道为什么这里是盐和哈希的方法



盐方法



UnicodeEncoding utf16 = new UnicodeEncoding（）;



if（utf16！= null）

{



Random random = new Random（unchecked（（int）DateTime.Now.Ticks））;



if（random！= null）

{



byte [] saltValue = new byte [8];



random.NextBytes （saltValue）;



string saltValueString = utf16.GetString（saltValue）;



哈希方法



UnicodeEncoding encoding = new UnicodeEncoding（）;



SHA512Managed hashing = new SHA512Managed（）;



string salt = string.Empty;



if（tb_password.Text！= null && hashing！= null && encoding ！= null）

{



if（salt == null）

{

//生成一个盐串。

salt = encoding.GetStrin g（saltValue）;

}



byte [] binarySaltValue = new byte [8];

binarySaltValue [0] = byte.Parse（salt.Substring（0,2），System.Globalization.NumberStyles.HexNumber，CultureInfo.InvariantCulture.NumberFormat）;

binarySaltValue [1] = byte.Parse（salt .Substring（2,2），System.Globalization.NumberStyles.HexNumber，CultureInfo.InvariantCulture.NumberFormat）;

binarySaltValue [2] = byte.Parse（salt.Substring（4,2），System .Globalization.NumberStyles.HexNumber，CultureInfo.InvariantCulture.NumberFormat）;

binarySaltValue [3] = byte.Parse（salt.Substring（6,2），System.Globalization.NumberStyles.HexNumber，CultureInfo。 InvariantCulture.NumberFormat）;





byte [] valueToHash = new byte [8 + encoding.GetByteCount（tb_password.Text）];

byte [] binaryPassword = encoding.GetBytes（tb_password.Text）;



binarySaltValue.CopyTo（valueToHash，0）;

binaryPassword.CopyTo（valueToHash，8）; < br $>


byte [] hashValue = hashing.ComputeHash（valueToHash）;



string hashedPassword = salt;



foreach（hashValue中的字节hexdigit）

{

hashedPassword + = hexdigit.ToString（X2，CultureInfo .InvariantCulture.NumberFormat）;

}

Okay. My salt value is ???? i not sure why here is my method for the salt and hash

Salt method

UnicodeEncoding utf16 = new UnicodeEncoding();

if (utf16 != null)
{

Random random = new Random(unchecked((int)DateTime.Now.Ticks));

if (random != null)
{

byte[] saltValue = new byte[8];

random.NextBytes(saltValue);

string saltValueString = utf16.GetString(saltValue);

Hash method

UnicodeEncoding encoding = new UnicodeEncoding();

SHA512Managed hashing = new SHA512Managed();

string salt = string.Empty;

if (tb_password.Text != null && hashing != null && encoding != null)
{

if (salt == null)
{
// Generate a salt string.
salt = encoding.GetString(saltValue);
}

byte[] binarySaltValue = new byte[8];
binarySaltValue[0] = byte.Parse(salt.Substring(0, 2), System.Globalization.NumberStyles.HexNumber, CultureInfo.InvariantCulture.NumberFormat);
binarySaltValue[1] = byte.Parse(salt.Substring(2, 2), System.Globalization.NumberStyles.HexNumber, CultureInfo.InvariantCulture.NumberFormat);
binarySaltValue[2] = byte.Parse(salt.Substring(4, 2), System.Globalization.NumberStyles.HexNumber, CultureInfo.InvariantCulture.NumberFormat);
binarySaltValue[3] = byte.Parse(salt.Substring(6, 2), System.Globalization.NumberStyles.HexNumber, CultureInfo.InvariantCulture.NumberFormat);


byte[] valueToHash = new byte[8 + encoding.GetByteCount(tb_password.Text)];
byte[] binaryPassword = encoding.GetBytes(tb_password.Text);

binarySaltValue.CopyTo(valueToHash, 0);
binaryPassword.CopyTo(valueToHash, 8);

byte[] hashValue = hashing.ComputeHash(valueToHash);

string hashedPassword = salt;

foreach (byte hexdigit in hashValue)
{
hashedPassword += hexdigit.ToString("X2", CultureInfo.InvariantCulture.NumberFormat);
}

推荐答案

阅读简单安全密码验证说明 [ ^ ]。

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