/// <summary>
/// Generate a new password
/// </summary>
/// <param name="policy">Policy that should be used when generating a new password.</param>
/// <returns>A password which is not encrypted.</returns>
/// <remarks>Uses characters which can't be mixed up along with <![CDATA["@!?&%/\"]]> if non alphas are required</remarks>
public static string GeneratePassword(this IAccountPolicy policy)
{
var length = Random.Next(policy.PasswordMinimumLength, policy.PasswordMinimumLength + 3);
var password = "";
var allowedCharacters = AllowedChars;
if (policy.MinRequiredNonAlphanumericCharacters > 0)
{
allowedCharacters += AllowedAlphas;
}
var nonAlphaLeft = policy.MinRequiredNonAlphanumericCharacters;
for (var i = 0; i < length; i++)
{
var ch = allowedCharacters[Random.Next(0, allowedCharacters.Length)];
if (AllowedAlphas.IndexOf(ch) != -1)
{
nonAlphaLeft--;
}
if (length - i <= nonAlphaLeft)
{
ch = AllowedAlphas[Random.Next(0, AllowedAlphas.Length)];
}
password += ch;
}
return(password);
}
/// <summary>
/// Determines whether the password is valid by going through all defined policies.
/// </summary>
/// <param name="accountPolicy">The password policy.</param>
/// <param name="password">The password.</param>
/// <returns>
/// <c>true</c> if the password is valid; otherwise, <c>false</c>.
/// </returns>
public static bool IsPasswordValid(this IAccountPolicy accountPolicy, string password)
{
var alphaCount = password.Count(ch => !char.IsLetterOrDigit(ch));
if (alphaCount < accountPolicy.MinRequiredNonAlphanumericCharacters)
{
return(false);
}
return(password.Length >= accountPolicy.PasswordMinimumLength);
}
/// <summary>
/// Checks if the specified password is valid
/// </summary>
/// <param name="password">Password being checked</param>
/// <param name="accountPolicy">Policy used to validate password.</param>
/// <returns></returns>
public bool IsValid(string password, IAccountPolicy accountPolicy)
{
return(accountPolicy.IsPasswordValid(password));
}
/// <summary>
/// Generate a new password
/// </summary>
/// <param name="policy">Policy that should be used when generating a new password.</param>
/// <returns>A password which is not encrypted.</returns>
public string GeneratePassword(IAccountPolicy policy)
{
return(policy.GeneratePassword());
}
