/// <summary>
/// Implements a <see cref="PBKDF2"/> algorthim with a user definded MAC method.
/// </summary>
/// <param name="method">the HMAC method to use.</param>
/// <param name="password">the password to use</param>
/// <param name="salt">the salt. Must be at least 64-bit</param>
/// <param name="iterations">the number of iterations. Must be at least 1000</param>
/// <param name="length">the number of bytes to return</param>
/// <returns>
/// A salted password based on the specified length.
/// </returns>
public static byte[] ComputeSaltedPassword(HMACMethod method, byte[] password, byte[] salt, int iterations, int length)
{
using (var kdf = new PBKDF2(method, password, salt, iterations))
{
return(kdf.GetBytes(length));
}
}
/// <summary>
/// Implements a <see cref="PBKDF2"/> algorthim with a user definded MAC method.
/// </summary>
/// <param name="method">the HMAC method to use.</param>
/// <param name="password">the password to use</param>
/// <param name="salt">the salt. recommended to be at least 64-bit</param>
/// <param name="iterations">the number of iterations. Recommended to be at least 1000</param>
public PBKDF2(HMACMethod method, byte[] password, byte[] salt, int iterations)
{
if (password == null)
{
throw new ArgumentNullException("password");
}
switch (method)
{
case HMACMethod.MD5:
Initialize(new HMac(new MD5Digest()), password, salt, iterations);
break;
case HMACMethod.TripleDES:
//Initialize(new MACTripleDES(password), salt, iterations);
break;
case HMACMethod.RIPEMD160:
Initialize(new HMac(new RipeMD160Digest()), password, salt, iterations);
//Initialize(new HMACRIPEMD160(password), salt, iterations);
break;
case HMACMethod.SHA1:
Initialize(new HMac(new Sha1Digest()), password, salt, iterations);
//Initialize(new HMAC<SHA1Core>(password), salt, iterations);
break;
case HMACMethod.SHA256:
Initialize(new HMac(new Sha256Digest()), password, salt, iterations);
//Initialize(new HMAC<SHA256Core>(password), salt, iterations);
break;
case HMACMethod.SHA384:
Initialize(new HMac(new Sha384Digest()), password, salt, iterations);
//Initialize(new HMACSHA384(password), salt, iterations);
break;
case HMACMethod.SHA512:
Initialize(new HMac(new Sha512Digest()), password, salt, iterations);
//Initialize(new HMAC<SHA512Core>(password), salt, iterations);
//Initialize(new HMACSHA512(password), salt, iterations);
break;
default:
throw new ArgumentOutOfRangeException("method");
}
}
/// <summary>
/// Implements a <see cref="PBKDF2"/> algorthim with a user definded MAC method.
/// </summary>
/// <param name="method">the HMAC method to use.</param>
/// <param name="password">the password to use</param>
/// <param name="salt">the salt. recommended to be at least 64-bit</param>
/// <param name="iterations">the number of iterations. Recommended to be at least 1000</param>
public PBKDF2(HMACMethod method, byte[] password, byte[] salt, int iterations)
{
if (password == null)
throw new ArgumentNullException("password");
switch (method)
{
case HMACMethod.MD5:
Initialize(new HMac(new MD5Digest()), password, salt, iterations);
break;
case HMACMethod.TripleDES:
//Initialize(new MACTripleDES(password), salt, iterations);
break;
case HMACMethod.RIPEMD160:
Initialize(new HMac(new RipeMD160Digest()), password, salt, iterations);
//Initialize(new HMACRIPEMD160(password), salt, iterations);
break;
case HMACMethod.SHA1:
Initialize(new HMac(new Sha1Digest()), password, salt, iterations);
//Initialize(new HMAC<SHA1Core>(password), salt, iterations);
break;
case HMACMethod.SHA256:
Initialize(new HMac(new Sha256Digest()), password, salt, iterations);
//Initialize(new HMAC<SHA256Core>(password), salt, iterations);
break;
case HMACMethod.SHA384:
Initialize(new HMac(new Sha384Digest()), password, salt, iterations);
//Initialize(new HMACSHA384(password), salt, iterations);
break;
case HMACMethod.SHA512:
Initialize(new HMac(new Sha512Digest()), password, salt, iterations);
//Initialize(new HMAC<SHA512Core>(password), salt, iterations);
//Initialize(new HMACSHA512(password), salt, iterations);
break;
default:
throw new ArgumentOutOfRangeException("method");
}
}
/// <summary>
/// Implements a <see cref="PBKDF2"/> algorthim with a user definded MAC method.
/// </summary>
/// <param name="method">the HMAC method to use.</param>
/// <param name="password">the password to use</param>
/// <param name="salt">the salt. Must be at least 64-bit</param>
/// <param name="iterations">the number of iterations. Must be at least 1000</param>
/// <param name="length">the number of bytes to return</param>
/// <returns>
/// A salted password based on the specified length.
/// </returns>
public static byte[] ComputeSaltedPassword(HMACMethod method, byte[] password, byte[] salt, int iterations, int length)
{
using (var kdf = new PBKDF2(method, password, salt, iterations))
{
return kdf.GetBytes(length);
}
}
