SymmetricAlgorithm.LegalKeySizes 屬性

定義

命名空間:

System.Security.Cryptography

組件:

netstandard.dll, System.Security.Cryptography.dll

來源:

SymmetricAlgorithm.cs

取得對稱演算法所支援的金鑰大小，以位元為單位。

C#

public virtual System.Security.Cryptography.KeySizes[] LegalKeySizes { get; }

屬性值

KeySizes[]

陣列，含有演算法所支援的金鑰大小。

範例

下列範例顯示 AES 對稱演算法的 值 LegalKeySizes 。

C#

using System;
using System.Security.Cryptography;
namespace SymmetricAlgo
{
    class Program
    {
        static void Main(string[] args)
        {
            Aes aes = Aes.Create();
            Console.WriteLine("Aes ");
            KeySizes[] ks = aes.LegalKeySizes;
            foreach (KeySizes k in ks)
            {
                Console.WriteLine("\tLegal min key size = " + k.MinSize);
                Console.WriteLine("\tLegal max key size = " + k.MaxSize);
            }
            ks = aes.LegalBlockSizes;
            foreach (KeySizes k in ks)
            {
                Console.WriteLine("\tLegal min block size = " + k.MinSize);
                Console.WriteLine("\tLegal max block size = " + k.MaxSize);
            }
        }
    }
}
//This sample produces the following output:
//Aes
//        Legal min key size = 128
//        Legal max key size = 256
//        Legal min block size = 128
//        Legal max block size = 128

備註

對稱演算法僅支援符合此陣列中專案的金鑰大小。

適用於

另請參閱

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