C#实现简单的RSA非对称加密算法示例

 namespace RSA算法 { partial class Form1 { /// 
 /// 必需的设计器变量。 /// 
 private System.ComponentModel.IContainer components = null; /// 
 /// 清理所有正在使用的资源。 /// 
 /// 如果应释放托管资源，为 true；否则为 false。 protected override void Dispose(bool disposing) { if (disposing && (components != null)) { components.Dispose(); } base.Dispose(disposing); } #region Windows 窗体设计器生成的代码 /// 
 /// 设计器支持所需的方法 - 不要 /// 使用代码编辑器修改此方法的内容。 /// 
 private void InitializeComponent() { this.StrBox = new System.Windows.Forms.TextBox(); this.label1 = new System.Windows.Forms.Label(); this.PubKeyBox = new System.Windows.Forms.TextBox(); this.label2 = new System.Windows.Forms.Label(); this.PrvKeyBox = new System.Windows.Forms.TextBox(); this.label3 = new System.Windows.Forms.Label(); this.EncrypeBox = new System.Windows.Forms.TextBox(); this.label4 = new System.Windows.Forms.Label(); this.label5 = new System.Windows.Forms.Label(); this.Str2Box = new System.Windows.Forms.TextBox(); this.CrypeBtn = new System.Windows.Forms.Button(); this.SuspendLayout(); // // StrBox // this.StrBox.Location = new System.Drawing.Point(115, 12); this.StrBox.Name = "StrBox"; this.StrBox.Size = new System.Drawing.Size(258, 21); this.StrBox.TabIndex = 0; // // label1 // this.label1.AutoSize = true; this.label1.Location = new System.Drawing.Point(11, 18); this.label1.Name = "label1"; this.label1.Size = new System.Drawing.Size(77, 12); this.label1.TabIndex = 1; this.label1.Text = "加密前的明文"; // // PubKeyBox // this.PubKeyBox.Location = new System.Drawing.Point(115, 78); this.PubKeyBox.Multiline = true; this.PubKeyBox.Name = "PubKeyBox"; this.PubKeyBox.Size = new System.Drawing.Size(258, 74); this.PubKeyBox.TabIndex = 2; // // label2 // this.label2.AutoSize = true; this.label2.Location = new System.Drawing.Point(11, 87); this.label2.Name = "label2"; this.label2.Size = new System.Drawing.Size(29, 12); this.label2.TabIndex = 3; this.label2.Text = "公钥"; // // PrvKeyBox // this.PrvKeyBox.Location = new System.Drawing.Point(115, 158); this.PrvKeyBox.Multiline = true; this.PrvKeyBox.Name = "PrvKeyBox"; this.PrvKeyBox.Size = new System.Drawing.Size(258, 128); this.PrvKeyBox.TabIndex = 4; // // label3 // this.label3.AutoSize = true; this.label3.Location = new System.Drawing.Point(13, 167); this.label3.Name = "label3"; this.label3.Size = new System.Drawing.Size(101, 12); this.label3.TabIndex = 5; this.label3.Text = "密钥（包含私钥）"; // // EncrypeBox // this.EncrypeBox.Location = new System.Drawing.Point(115, 292); this.EncrypeBox.Name = "EncrypeBox"; this.EncrypeBox.Size = new System.Drawing.Size(258, 21); this.EncrypeBox.TabIndex = 6; // // label4 // this.label4.AutoSize = true; this.label4.Location = new System.Drawing.Point(14, 299); this.label4.Name = "label4"; this.label4.Size = new System.Drawing.Size(29, 12); this.label4.TabIndex = 7; this.label4.Text = "密文"; // // label5 // this.label5.AutoSize = true; this.label5.Location = new System.Drawing.Point(14, 329); this.label5.Name = "label5"; this.label5.Size = new System.Drawing.Size(77, 12); this.label5.TabIndex = 8; this.label5.Text = "解密后的明文"; // // Str2Box // this.Str2Box.Location = new System.Drawing.Point(115, 320); this.Str2Box.Name = "Str2Box"; this.Str2Box.Size = new System.Drawing.Size(258, 21); this.Str2Box.TabIndex = 9; // // CrypeBtn // this.CrypeBtn.Location = new System.Drawing.Point(117, 43); this.CrypeBtn.Name = "CrypeBtn"; this.CrypeBtn.Size = new System.Drawing.Size(104, 23); this.CrypeBtn.TabIndex = 10; this.CrypeBtn.Text = "执行加密解密"; this.CrypeBtn.UseVisualStyleBackColor = true; this.CrypeBtn.Click += new System.EventHandler(this.CrypeBtn_Click); // // Form1 // this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F); this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; this.ClientSize = new System.Drawing.Size(385, 353); this.Controls.Add(this.CrypeBtn); this.Controls.Add(this.Str2Box); this.Controls.Add(this.label5); this.Controls.Add(this.label4); this.Controls.Add(this.EncrypeBox); this.Controls.Add(this.label3); this.Controls.Add(this.PrvKeyBox); this.Controls.Add(this.label2); this.Controls.Add(this.PubKeyBox); this.Controls.Add(this.label1); this.Controls.Add(this.StrBox); this.Name = "Form1"; this.Text = "RSA非对称加密解密"; this.ResumeLayout(false); this.PerformLayout(); } #endregion private System.Windows.Forms.TextBox StrBox; private System.Windows.Forms.Label label1; private System.Windows.Forms.TextBox PubKeyBox; private System.Windows.Forms.Label label2; private System.Windows.Forms.TextBox PrvKeyBox; private System.Windows.Forms.Label label3; private System.Windows.Forms.TextBox EncrypeBox; private System.Windows.Forms.Label label4; private System.Windows.Forms.Label label5; private System.Windows.Forms.TextBox Str2Box; private System.Windows.Forms.Button CrypeBtn; } } 

 using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.Security.Cryptography; namespace RSA算法 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void CrypeBtn_Click(object sender, EventArgs e) { //创建RSA加密算法服务提供者 RSACryptoServiceProvider RSA = new RSACryptoServiceProvider(); //显示公钥和私钥 PubKeyBox.Text = RSA.ToXmlString(false); PrvKeyBox.Text = RSA.ToXmlString(true); //执行加密 byte[] EncrypeBytes = RSA.Encrypt(Encoding.UTF8.GetBytes(StrBox.Text), true); EncrypeBox.Text = Encoding.UTF8.GetString(EncrypeBytes); //执行解密 byte[] DecrypeBytes = RSA.Decrypt(EncrypeBytes, true); Str2Box.Text = Encoding.UTF8.GetString(DecrypeBytes); } } }