DES::IsSemiWeakKey Method (array<Byte>^)
Determines whether the specified key is semi-weak.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- rgbKey
-
Type:
array<System::Byte>^
The secret key to test for semi-weakness.
| Exception | Condition |
|---|---|
| CryptographicException | The size of the rgbKey parameter is not valid. |
Semi-weak keys are pairs of keys that result in ciphers that are easy to break. If text is encrypted with a semi-weak key, encrypting the resulting cipher with the partner of that semi-weak key returns the original text. There are six known semi-weak key pairs for the Data Encryption Standard (DES) algorithm; this method checks for those semi-weak keys.
Attempting to set a semi-weak key results in a CryptographicException. When GenerateKey is called to create a random key, a semi-weak key will never be returned.
Available since 1.1