C#下对称算法、非对称算法生成秘钥

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一个简单的帮助类，因为后面的加密、解密算法要用到，所以这里单独写下

    using System.Security.Cryptography;    public class KeyGenerator    {        /// <summary>        /// 随机生成秘钥（对称算法）        /// </summary>        /// <param name="key">秘钥(base64格式)</param>        /// <param name="iv">iv向量(base64格式)</param>        /// <param name="keySize">要生成的KeySize，每8个byte是一个字节，注意每种算法支持的KeySize均有差异，实际可通过输出LegalKeySizes来得到支持的值</param>        public static void CreateSymmetricAlgorithmKey<T>(out string key, out string iv, int keySize)            where T : SymmetricAlgorithm, new()        {            using (T t = new T())            {#if DEBUG                Console.WriteLine(string.Join("", t.LegalKeySizes.Select(k => string.Format("MinSize:{0} MaxSize:{1} SkipSize:{2}", k.MinSize, k.MaxSize, k.SkipSize))));#endif                t.KeySize = keySize;                t.GenerateIV();                t.GenerateKey();                iv = Convert.ToBase64String(t.IV);                key = Convert.ToBase64String(t.Key);            }        }        /// <summary>        /// 随机生成秘钥（非对称算法）        /// </summary>        /// <typeparam name="T"></typeparam>        /// <param name="publicKey">公钥（Xml格式）</param>        /// <param name="privateKey">私钥（Xml格式）</param>        /// <param name="provider">用于生成秘钥的非对称算法实现类，因为非对称算法长度需要在构造函数传入，所以这里只能传递算法类</param>        public static void CreateAsymmetricAlgorithmKey<T>(out string publicKey, out string privateKey, T provider = null)            where T : AsymmetricAlgorithm, new()        {            if (provider == null)            {                provider = new T();            }            using (provider)            {#if DEBUG                Console.WriteLine(string.Join("", provider.LegalKeySizes.Select(k => string.Format("MinSize:{0} MaxSize:{1} SkipSize:{2}", k.MinSize, k.MaxSize, k.SkipSize))));#endif                publicKey = provider.ToXmlString(false);                privateKey = provider.ToXmlString(true);            }        }    }

测试代码如下，这里分别用3DES和RSA做例子

            string key, iv;            KeyGenerator.CreateSymmetricAlgorithmKey<TripleDESCryptoServiceProvider>(out key, out iv, 128);            Console.WriteLine(key.Length);            KeyGenerator.CreateSymmetricAlgorithmKey<TripleDESCryptoServiceProvider>(out key, out iv, 192);            Console.WriteLine(key.Length);            string privateKey, publicKey;            for (var i = 800; i < 2000; i += 8)            {                using (RSACryptoServiceProvider provider = new RSACryptoServiceProvider(i))                {                    KeyGenerator.CreateAsymmetricAlgorithmKey<RSACryptoServiceProvider>(out publicKey, out privateKey, provider);                    Console.WriteLine(privateKey.Length);                }            }

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