internal static NtStatus RtlCalculateNtOwfPassword(SafeUnicodeSecureStringPointer password, out byte[] hash)
{
SecureUnicodeString unicodePassword = new SecureUnicodeString(password);
// Allocate output buffer
hash = new byte[NTHashNumBytes];
return RtlCalculateNtOwfPassword(ref unicodePassword, hash);
}
internal static NtStatus RtlCalculateNtOwfPassword(SafeUnicodeSecureStringPointer password, out byte[] hash)
{
SecureUnicodeString unicodePassword = new SecureUnicodeString(password);
// Allocate output buffer
hash = new byte[NTHashNumBytes];
return(RtlCalculateNtOwfPassword(ref unicodePassword, hash));
}
internal NtStatus DeriveKey(SecureString password, string salt, int iterations, out byte[] key)
{
key = new byte[this.KeySize];
var unicodeSalt = new UnicodeString(salt);
using (var passwordPointer = new SafeUnicodeSecureStringPointer(password))
{
var unicodePassword = new SecureUnicodeString(passwordPointer);
return(this.KeyDerivationFunction(ref unicodePassword, ref unicodeSalt, iterations, key));
}
}
//public static byte[] ComputeHash(SecureString password)
//{
// Validator.AssertNotNull(password, "password");
// Validator.AssertMaxLength(password, MaxChars, "password");
// int oemPwdBufferLength = Encoding.ASCII.GetMaxByteCount(MaxChars);
// byte[] hash;
// using (SafeOemStringPointer oemPwdBuffer = SafeOemStringPointer.Allocate(oemPwdBufferLength))
// {
// using(SafeUnicodeSecureStringPointer unicodePwdBuffer = new SafeUnicodeSecureStringPointer(password))
// {
// NtStatus result1 = NativeMethods.RtlUpcaseUnicodeToOemN(oemPwdBuffer, (uint)oemPwdBufferLength, unicodePwdBuffer);
// Validator.AssertSuccess(result1);
// }
// NtStatus result2 = NativeMethods.RtlCalculateLmOwfPassword(oemPwdBuffer, out hash);
// Validator.AssertSuccess(result2);
// }
// return hash;
//}
public static byte[] ComputeHash(SecureString password)
{
Validator.AssertNotNull(password, "password");
Validator.AssertMaxLength(password, MaxChars, "password");
int oemPwdBufferLength = Encoding.ASCII.GetMaxByteCount(MaxChars);
byte[] hash;
using (SafeOemStringPointer oemPwdBuffer = SafeOemStringPointer.Allocate(oemPwdBufferLength))
{
using (SafeUnicodeSecureStringPointer unicodePwdBuffer = new SafeUnicodeSecureStringPointer(password))
{
SecureUnicodeString unicodePwd = new SecureUnicodeString(unicodePwdBuffer);
OemString oemPwd = new OemString(oemPwdBuffer);
NtStatus result1 = NativeMethods.RtlUpcaseUnicodeStringToOemString(oemPwd, unicodePwd);
Validator.AssertSuccess(result1);
}
NtStatus result2 = NativeMethods.RtlCalculateLmOwfPassword(oemPwdBuffer, out hash);
Validator.AssertSuccess(result2);
}
return hash;
}
private static extern NtStatus RtlCalculateNtOwfPassword([In] ref SecureUnicodeString password, [MarshalAs(UnmanagedType.LPArray, SizeConst = NTHashNumBytes), In, Out] byte[] hash);
internal static NtStatus RtlUpcaseUnicodeStringToOemString(OemString destinationString, SecureUnicodeString sourceString)
{
return(RtlUpcaseUnicodeStringToOemString(ref destinationString, ref sourceString, false));
}
private static extern NtStatus RtlUpcaseUnicodeStringToOemString([In, Out] ref OemString destinationString, [In] ref SecureUnicodeString sourceString, [MarshalAs(UnmanagedType.Bool)] bool allocateDestinationString);
internal static NtStatus RtlUpcaseUnicodeStringToOemString(OemString destinationString, SecureUnicodeString sourceString)
{
return RtlUpcaseUnicodeStringToOemString(ref destinationString, ref sourceString, false);
}
