public static string GetSymbols(this SymbolsType type)
{
var resultSymbols = string.Empty;
foreach (var typeFlag in type.GetFlags())
{
switch (typeFlag)
{
case SymbolsType.LowcaseLatin:
resultSymbols += LowcaseLatinSymbols;
break;
case SymbolsType.UpcaseLatin:
resultSymbols += UpcaseLatinSymbols;
break;
case SymbolsType.Digital:
resultSymbols += NumberSymbols;
break;
default:
throw new ArgumentOutOfRangeException(nameof(type), type, null);
}
}
Contract.Assume(resultSymbols != null);
return(resultSymbols);
}
private static string GenerateMandatoryPart(
SymbolsType acceptedTypes,
byte[] passwordSymbolsNumbers)
{
var passwordPartBuilder = new StringBuilder();
for (var i = 0; acceptedTypes != 0; i++)
{
var randomTypeNumber = passwordSymbolsNumbers[2 * i];
var randomSymbolNumber = passwordSymbolsNumbers[2 * i + 1];
var unusedTypes = acceptedTypes.GetFlags().ToArray();
var usedType = unusedTypes[randomTypeNumber % unusedTypes.Length];
var usedSymbols = usedType.GetSymbols();
passwordPartBuilder.Append(usedSymbols[randomSymbolNumber % usedSymbols.Length]);
acceptedTypes = TurnOffFlag(acceptedTypes, usedType);
}
return passwordPartBuilder.ToString();
}
private static string GenerateMandatoryPart(
SymbolsType acceptedTypes,
byte[] passwordSymbolsNumbers)
{
var passwordPartBuilder = new StringBuilder();
for (var i = 0; acceptedTypes != 0; i++)
{
var randomTypeNumber = passwordSymbolsNumbers[2 * i];
var randomSymbolNumber = passwordSymbolsNumbers[2 * i + 1];
var unusedTypes = acceptedTypes.GetFlags().ToArray();
var usedType = unusedTypes[randomTypeNumber % unusedTypes.Length];
var usedSymbols = usedType.GetSymbols();
passwordPartBuilder.Append(usedSymbols[randomSymbolNumber % usedSymbols.Length]);
acceptedTypes = TurnOffFlag(acceptedTypes, usedType);
}
return(passwordPartBuilder.ToString());
}