在C#中使用公钥作为文本加密字符串

using System;
using System.Security.Cryptography;

public class RSAExample
{
    public static void Main()
    {
        // 创建RSA实例
        using (RSACryptoServiceProvider rsa = new RSACryptoServiceProvider())
        {
            // 获取公钥和私钥
            string publicKey = rsa.ToXmlString(false);
            string privateKey = rsa.ToXmlString(true);

            // 将公钥和私钥保存到文件或数据库中，以便后续使用
            Console.WriteLine("公钥：\n" + publicKey);
            Console.WriteLine("私钥：\n" + privateKey);
        }
    }
}

using System;
using System.Security.Cryptography;
using System.Text;

public class RSAExample
{
    public static void Main()
    {
        // 公钥字符串
        string publicKey = "<公钥>";

        // 创建RSA实例
        using (RSACryptoServiceProvider rsa = new RSACryptoServiceProvider())
        {
            // 导入公钥
            rsa.FromXmlString(publicKey);

            // 加密文本
            string plaintext = "要加密的文本";
            byte[] plaintextBytes = Encoding.UTF8.GetBytes(plaintext);
            byte[] ciphertextBytes = rsa.Encrypt(plaintextBytes, false);
            string ciphertext = Convert.ToBase64String(ciphertextBytes);

            Console.WriteLine("加密后的文本：\n" + ciphertext);
        }
    }
}

using System;
using System.Security.Cryptography;
using System.Text;

public class RSAExample
{
    public static void Main()
    {
        // 私钥字符串
        string privateKey = "<私钥>";

        // 创建RSA实例
        using (RSACryptoServiceProvider rsa = new RSACryptoServiceProvider())
        {
            // 导入私钥
            rsa.FromXmlString(privateKey);

            // 解密文本
            string ciphertext = "<加密后的文本>";
            byte[] ciphertextBytes = Convert.FromBase64String(ciphertext);
            byte[] plaintextBytes = rsa.Decrypt(ciphertextBytes, false);
            string plaintext = Encoding.UTF8.GetString(plaintextBytes);

            Console.WriteLine("解密后的文本：\n" + plaintext);
        }
    }
}