DES.IsWeakKey(Byte[]) Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
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
Parameters
- rgbKey
- Byte[]
The secret key to test for weakness.
Returns
true
if the key is weak; otherwise, false
.
Exceptions
The size of the rgbKey
parameter is not valid.
Remarks
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. There are four known weak keys for the Data Encryption Standard (DES) algorithm; this method checks for those weak keys.
Attempting to set a weak key results in a CryptographicException. When GenerateKey is called to create a random key, a weak key will never be returned.
Applies to
See also
.NET
フィードバック
https://aka.ms/ContentUserFeedback」を参照してください。
以下は間もなく提供いたします。2024 年を通じて、コンテンツのフィードバック メカニズムとして GitHub の issue を段階的に廃止し、新しいフィードバック システムに置き換えます。 詳細については、「フィードバックの送信と表示