Is Weak Key(Byte) Method
Determines whether the specified key is weak.
public: static bool IsWeakKey(cli::array <System::Byte> ^ rgbKey);
public static bool IsWeakKey (byte rgbKey);
static member IsWeakKey : byte -> bool
Public Shared Function IsWeakKey (rgbKey As Byte()) As Boolean
The secret key to test for weakness.
true if the key is weak; otherwise,
The size of the
rgbKey parameter is not valid.
Weak keys are keys that result in ciphers that are easy to break. If text is encrypted with a weak key, encrypting the resulting cipher again with the same weak key returns the original text. In 128-bit mode, if the first 64 bits are the same as the last 64 bits, the key is weak. In 192-bit mode, if the first 64 bits are the same as the second 64 bits or if the second 64 bits are the same as the last 64 bits, the key is weak.