/// <summary>
/// Fuzzes the passed in CCN
/// </summary>
/// <param name="creditCardNumber"></param>
/// <param name="fuzzRules"></param>
/// <param name="random"></param>
/// <returns></returns>
public String FuzzCreditCardNumber(String creditCardNumber, FuzzMethod fuzzMethod, Random random)
{
String fuzzedCCN = null;
StringFuzzer fuzzer = new StringFuzzer(random);
switch (fuzzMethod)
{
case (FuzzMethod.AdjacentCharactersSwapped):
{
// swap two adjacent/Unique characters (no fuzzRules yet)
fuzzedCCN = fuzzer.SwapTwoUniqueAdjacentCharacters(creditCardNumber);
break;
}
case (FuzzMethod.MissingRandomMiddleCharacter):
{
// simply remove a character from a random position within the CCN. The two end characters are preserved
Char firstChar = creditCardNumber.First();
Char lastChar = creditCardNumber.Last();
// delete a random character between the begining and end characters of the string
String midCcn = fuzzer.DeleteRandomCharacter(creditCardNumber.Substring(1, creditCardNumber.Length - 2));
// put the pieces back together again
fuzzedCCN = String.Format("{0}{1}{2}", firstChar, midCcn, lastChar);
break;
}
case (FuzzMethod.MissingFirstCharacter):
{
fuzzedCCN = creditCardNumber.Remove(0, 1);
break;
}
case (FuzzMethod.MissingLastCharacter):
{
fuzzedCCN = creditCardNumber.Remove(creditCardNumber.Length - 1, 1);
break;
}
case (FuzzMethod.RandomCharacterAdded):
{
fuzzedCCN = fuzzer.InsertRandomCharacter(creditCardNumber);
break;
}
}
return(fuzzedCCN);
}
/// <summary>
/// Fuzz the passed in SSN string
/// </summary>
/// <param name="socialSecurityNumber"></param>
/// <returns></returns>
private string FuzzSocialSecurityNumber(String socialSecurityNumber, FuzzMethod fuzzMethod, Random random)
{
string fuzzedSsn = null;
// if all the characters in the string are the same, this is essentially a no-op
if (socialSecurityNumber.HasAllTheSameCharacters())
{
return(socialSecurityNumber);
}
// instance of the random class used for mixing up the list.
if (random == null)
{
random = new Random(DateTime.Now.Millisecond);
}
// remove the dashes in the ssn
char[] rawSsn = DataGenHelpers.GetRawSsn(socialSecurityNumber).ToCharArray();
// Initialize string fuzzer
StringFuzzer fuzzer = new StringFuzzer(random);
// Fuzz Accordingly:
switch (fuzzMethod)
{
case (FuzzMethod.AdjacentCharactersSwapped):
{
// Starting from a random position in a string, swap two unique and adjacent characters in that string.
// If the string happens to have all the same characters, there is not much we can do
fuzzer = new StringFuzzer(random);
fuzzedSsn = fuzzer.SwapTwoUniqueAdjacentCharacters(rawSsn);
fuzzedSsn = DataGenHelpers.BuildFormattedSsn(fuzzedSsn);
break;
}
case (FuzzMethod.MissingRandomMiddleCharacter):
{
// simply remove a character from a random position within the SSN. The two end characters are preserved
Char firstChar = rawSsn.First();
Char lastChar = rawSsn.Last();
// delete a random character between the begining and end characters of the string
String midSsn = fuzzer.DeleteRandomCharacter(new String(rawSsn, 1, rawSsn.Length - 2));
// put the pieces back together again
fuzzedSsn = String.Format("{0}{1}{2}", firstChar, midSsn, lastChar);
fuzzedSsn = DataGenHelpers.BuildFormattedSsn(fuzzedSsn);
break;
}
case (FuzzMethod.MissingFirstCharacter):
{
fuzzedSsn = socialSecurityNumber.Remove(0, 1);
break;
}
case (FuzzMethod.MissingLastCharacter):
{
fuzzedSsn = socialSecurityNumber.Remove(socialSecurityNumber.Length - 1, 1);
break;
}
case (FuzzMethod.RandomCharacterAdded):
{
fuzzedSsn = fuzzer.InsertRandomCharacter(socialSecurityNumber);
break;
}
}
return(fuzzedSsn);
}