// Randomly generate the desired number of lowercase, uppercase, numeric and special chars
// Add them to char array
// Shuffle array randomly
public static string RandomPassword(AbstractPasswordOptions options)
{
int maxLenLowerCaseChars = options.PASSWORD_CHARS_LCASE.Length;
int maxLenUpperCaseChars = options.PASSWORD_CHARS_UCASE.Length;
int maxLenNumericChars = options.PASSWORD_CHARS_NUMERIC.Length;
int maxLenSpecialChars = options.PASSWORD_CHARS_SPECIAL.Length;
int k = 0;
char[] pwChars = new char[options.TotalPasswordLength];
using (Captcha.Cryptography.CryptoRandom rnd = options.RandomNumberGenerator)
{
for (int i = 0; i < options.NumberOfLowerCaseCharacters; ++i)
{
char c = options.PASSWORD_CHARS_LCASE[rnd.Next(0, maxLenLowerCaseChars)];
pwChars[k] = c;
k++;
}
for (int i = 0; i < options.NumberOfUpperCaseCharacters; ++i)
{
char c = options.PASSWORD_CHARS_UCASE[rnd.Next(0, maxLenUpperCaseChars)];
pwChars[k] = c;
k++;
}
for (int i = 0; i < options.NumberOfNumericCharacters; ++i)
{
char c = options.PASSWORD_CHARS_NUMERIC[rnd.Next(0, maxLenNumericChars)];
pwChars[k] = c;
k++;
}
for (int i = 0; i < options.NumberOfSpecialCharacters; ++i)
{
char c = options.PASSWORD_CHARS_SPECIAL[rnd.Next(0, maxLenSpecialChars)];
pwChars[k] = c;
k++;
}
Shuffle(pwChars, rnd);
} // End Using rnd
return(new string(pwChars));
}// End Function RandomPassword
} // End Sub Shuffle
public static string CreatePassword(int length)
{
System.Text.StringBuilder res = new System.Text.StringBuilder();
const string valid = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
// System.Random rnd = new System.Random();
using (Captcha.Cryptography.CryptoRandom rnd = new Captcha.Cryptography.CryptoRandom())
{
// cr.Next(10, 100);
while (0 < length--)
{
res.Append(valid[rnd.Next(valid.Length)]);
}
}
return(res.ToString());
}