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直接贴代码了: using System; using System.Security.Cryptography; namespace DearBruce.ConAppTest { class Program { static void Main(string[] args) { // 用 RSA 加密算法 API 来加密和解密 string word = "hello"; string encryptWord = RSAEncryption(word); Console.WriteLine("{0} 加密后的密文为:{1}\n\n", word, encryptWord); string newWord = RSADecryption(encryptWord); Console.WriteLine("{0} 解密后的明文为:{1}\n\n", encryptWord, newWord); } /// <summary> /// 加密 /// </summary> /// <param name="word">待加密的字符串</param> /// <returns></returns> static string RSAEncryption(string word) { CspParameters param = new CspParameters(); param.KeyContainerName = "MyKeyContainer"; using (RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(param)) { byte[] plaindata = System.Text.Encoding.Default.GetBytes(word); byte[] encryptdata = rsa.Encrypt(plaindata, false); string encryptstring = Convert.ToBase64String(encryptdata); return encryptstring; } } /// <summary> /// 解密,当密文不正确时,可能会抛出异常 /// </summary> /// <param name="encryptWord">待解密的密文字符串</param> /// <returns></returns> static string RSADecryption(string encryptWord) { CspParameters param = new CspParameters(); param.KeyContainerName = "MyKeyContainer"; using (RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(param)) { byte[] encryptdata = Convert.FromBase64String(encryptWord); byte[] decryptdata = rsa.Decrypt(encryptdata, false); string plaindata = System.Text.Encoding.Default.GetString(decryptdata); return plaindata; } } } }
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