/**
* Creates a 60 character Bcrypt String, including
* version, cost factor, salt and hash, separated by '$'
*
* @param version the version, 2y,2b or 2a. (2a is not backwards compatible.)
* @param cost the cost factor, treated as an exponent of 2
* @param salt a 16 byte salt
* @param password the password
* @return a 60 character Bcrypt String
*/
private static string CreateBcryptString(string version, byte[] password, byte[] salt, int cost)
{
if (!AllowedVersions.Contains(version))
{
throw new ArgumentException("Version " + version + " is not accepted by this implementation.", "version");
}
StringBuilder sb = new StringBuilder(60);
sb.Append('$');
sb.Append(version);
sb.Append('$');
sb.Append(cost < 10 ? ("0" + cost) : cost.ToString());
sb.Append('$');
sb.Append(EncodeData(salt));
byte[] key = BCrypt.Generate(password, salt, cost);
sb.Append(EncodeData(key));
return(sb.ToString());
}
