.NET生成RSA公钥和私钥-加密解密示例
2016-10-19 22:35
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我们每一个人的一生中都会难免有缺憾和不如意,也许我们无力改变这个事实,而我们可以改变的只是看待这些事情的态度。用平和的态度去对待生活中的缺憾和苦难。
Form1.cs代码:
public partial class Form1 : Form { private const int RsaKeySize = 2048; private const string publicKeyFileName = "RSA.Pub"; private const string privateKeyFileName = "RSA.Private"; private string basePathToStoreKeys; public Form1() { InitializeComponent(); basePathToStoreKeys = Directory.GetCurrentDirectory(); } //生成密钥 private void button1_Click(object sender, EventArgs e) { GenerateKeys(basePathToStoreKeys); } //加密文本框内容 private void button2_Click(object sender, EventArgs e) { var encryptedString = Encrypt(textBox1.Text, Path.Combine(basePathToStoreKeys, publicKeyFileName)); textBox2.Text = encryptedString; } //解密文本框内容 private void button3_Click(object sender, EventArgs e) { var decryptedString = Decrypt(textBox2.Text, Path.Combine(basePathToStoreKeys, privateKeyFileName)); textBox2.Text = decryptedString; } /// <summary> ///在给定路径中生成XML格式的私钥和公钥。 /// </summary> public void GenerateKeys(string path) { using (var rsa = new RSACryptoServiceProvider(RsaKeySize)) { try { // 获取私钥和公钥。 var publicKey = rsa.ToXmlString(false); var privateKey = rsa.ToXmlString(true); // 保存到磁盘 File.WriteAllText(Path.Combine(path, publicKeyFileName), publicKey); File.WriteAllText(Path.Combine(path, privateKeyFileName), privateKey); MessageBox.Show(string.Format("生成的RSA密钥的路径: {0}\\ [{1}, {2}]", path, publicKeyFileName, privateKeyFileName)); } finally { rsa.PersistKeyInCsp = false; } } } /// <summary> /// 用给定路径的RSA公钥文件加密纯文本。 /// </summary> /// <param name="plainText">要加密的文本</param> /// <param name="pathToPublicKey">用于加密的公钥路径.</param> /// <returns>表示加密数据的64位编码字符串.</returns> public string Encrypt(string plainText, string pathToPublicKey) { using (var rsa = new RSACryptoServiceProvider(RsaKeySize)) { try { //加载公钥 var publicXmlKey = File.ReadAllText(pathToPublicKey); rsa.FromXmlString(publicXmlKey); var bytesToEncrypt = System.Text.Encoding.Unicode.GetBytes(plainText); var bytesEncrypted = rsa.Encrypt(bytesToEncrypt, false); return Convert.ToBase64String(bytesEncrypted); } finally { rsa.PersistKeyInCsp = false; } } } /// <summary> /// Decrypts encrypted text given a RSA private key file path.给定路径的RSA私钥文件解密 加密文本 /// </summary> /// <param name="encryptedText">加密的密文</param> /// <param name="pathToPrivateKey">用于加密的私钥路径.</param> /// <returns>未加密数据的字符串</returns> public string Decrypt(string encryptedText, string pathToPrivateKey) { using (var rsa = new RSACryptoServiceProvider(RsaKeySize)) { try { var privateXmlKey = File.ReadAllText(pathToPrivateKey); rsa.FromXmlString(privateXmlKey); var bytesEncrypted = Convert.FromBase64String(encryptedText); var bytesPlainText = rsa.Decrypt(bytesEncrypted, false); return System.Text.Encoding.Unicode.GetString(bytesPlainText); } finally { rsa.PersistKeyInCsp = false; } } } }
生成的RSA.Private的内容:
<?xml version="1.0" encoding="utf-8"?> <RSAKeyValue> <Modulus>veJTjzABfYl9/9YbOOw+EcfIZ1jajWiGPAXW+G/2uIUYh9L9WSyLPghl3oMZM2GDxp9f+chdc0k9lrNbJwsIaereleTiOcl2u/rq+jS8r2WhTfk8bIMWeAO/B5S0IjIbmKXdymRNZFw/KjuY99HdYk6nB1MZ1AJ/e3xJKwWJrXp55Y4DlX9sGTORS9kcy1q4fuxjJHUFAYsasV/vnsjlaau4sp6xBcDIfT1tRkxMZriDPW3J7qH7/qI2X4+iQZQIfAyFpSlqi+4GI9FajogEareCS7d1vc+OYdGc+jX1h0erHsRtlvFHzLcqBmZQ0Gz0XdZxOwJf5vhxUvvoK9BmBw==</Modulus> <Exponent>AQAB</Exponent> <P>9Dq9A5cVGeBKib4WNSUBQqp25J4p0IUX1foc+zrX6/ZuSgDeXxIKiFmQPcl9R2RTwXQxFYWSkGW4gQis+AMnQJL98kHJXnG2FAiEsEhYUDUEKx29OA+/y/hNoyEbztcggru8Ebn8v4Aq6BMBvM9Q+Q5lIl2I8SRQnDfVnuwdaSc=</P> <Q>xwkVjnwN0m9K6EyHT5vrOJbw/0cTdcCtoFU7wDawOHJeDj872dR3vs3rf+YinnMNOo47VgH5CQaFEbhgmiAjYlaz+tPFqD/TiiHp0ceqfN3XjUqDx+TkPYq+gGreeh+XE43lP/Z2YUscLq0x/uHPky2EWIxvqqphvW1Xh7ECaCE=</Q> <DP>cH6Zz4yIyKl6S+YFvqbz5Kw2JWoA4q5bY1FYhhP9nw+cj3PE+c+KkHGIsh0cGoVI2wPVFA+5ic+A49aGLZruOp06YZsR0PHZp3KhA73fB9rTt7R0Et2WP7J4uFoov+ZxcCZfI18i32Z+3PTcSQbJSl7qEKE60bAjfUFuoUwq4+M=</DP> <DQ>D5hPnxVrQ9TCiscMRxmRaaKyCV55UN2i/RAQmXPvhMy5P+aGev/hzgp2bFQM3FtpavAgCBIpgCKJpKTMtObVvuvKOFoFf7RYj9cuaeh6HESJkiGHh88Qbx4C5S76dZkqDjctAkD+b4siDyo046Kvz/leCE4gpb+p3tzFYfVlmeE=</DQ> <InverseQ>ux0qhR3AqWMzOsSnwLtj7OGZR7p8hrga6TEr9V5nuvCovHLUcMcwAjXHm/+ZEWXCuQBnoQC82yQbyICuIUbLkYUSfPE59mxAgxrInqHY3j3IDQ09APyJJ1sIelyB0DZOpFa2ERydH0PcthPcS9/d42vADIuE3Z5k6Y9JVyGqmKQ=</InverseQ> <D>kbp2OKk2K5tu2P8AC3K7vDegpTg7G1XB16T/s9Fx/3EeP3d9OogGIUierePdXmKTmMdOCExu9ACcxODHrzI3ddpsk4uC16i3eFN9LSN2QAJ2hnomln0QrHDrlizZBnmAVmnNyvuprcFiNM5ieqdVCZKle+iaJOz529Kp8NuiK0FExKkv10WYSSsSf6T17eNnGqRqaCEnP8LSgu1WbPiKZ1oIEjt6WThGWIN6d9++InqhbXaCdglnA0U7kXXuWuAnlOf0uBlcUwrGBU6IKqmgrMwgqHKMuSSuJ65UoHYp3RTG+ECmtAHTe7YBBNnjOo8QSCEtdUpSdfKtT5YjVJhOwQ==</D> </RSAKeyValue>
生成的RSA.Pub的内容:
<?xml version="1.0" encoding="utf-8"?> <RSAKeyValue> <Modulus>veJTjzABfYl9/9YbOOw+EcfIZ1jajWiGPAXW+G/2uIUYh9L9WSyLPghl3oMZM2GDxp9f+chdc0k9lrNbJwsIaereleTiOcl2u/rq+jS8r2WhTfk8bIMWeAO/B5S0IjIbmKXdymRNZFw/KjuY99HdYk6nB1MZ1AJ/e3xJKwWJrXp55Y4DlX9sGTORS9kcy1q4fuxjJHUFAYsasV/vnsjlaau4sp6xBcDIfT1tRkxMZriDPW3J7qH7/qI2X4+iQZQIfAyFpSlqi+4GI9FajogEareCS7d1vc+OYdGc+jX1h0erHsRtlvFHzLcqBmZQ0Gz0XdZxOwJf5vhxUvvoK9BmBw==</Modulus> <Exponent>AQAB</Exponent> </RSAKeyValue>
运行结果如图:
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