Ejemplo n.º 1
0
 // Determine if a TripleDES key value is "weak".
 public static bool IsWeakKey(byte[] rgbKey)
 {
     if (rgbKey == null ||
         (rgbKey.Length != 16 && rgbKey.Length != 24))
     {
         throw new CryptographicException
                   (_("Crypto_InvalidKeySize"),
                   ((rgbKey == null) ? 0 : rgbKey.Length).ToString());
     }
     if (rgbKey.Length == 16)
     {
         return(CryptoMethods.SameKey(rgbKey, 0, rgbKey, 8));
     }
     else
     {
         return(CryptoMethods.SameKey(rgbKey, 0, rgbKey, 8) ||
                CryptoMethods.SameKey(rgbKey, 8, rgbKey, 16));
     }
 }