前言
今天大姚給大家分享一款C#版開源、免費的Bouncy Castle密碼庫：BouncyCastle。
項目介紹
BouncyCastle是一款C#版開源、免費的Bouncy Castle密碼庫，開發人員可以通過該項目在他們的 C# 應用程序中使用 Bouncy Castle 提供的各種密碼學功能，從而加強數據的安全性和保護隱私信息。
Bouncy Castle介紹
Bouncy Castle是一個流行的密碼學庫，提供了廣泛的密碼算法和協議的實現（包括對稱加密、非對稱加密、哈希函數、數字簽名等）。它由澳大利亞註冊的慈善組織“Bouncy Castle軍團”開發，旨在提供可靠而安全的加密解決方案。
項目源代碼
創建控制檯應用
創建一個名爲：BouncyCastleExercise的控制檯。
安裝BouncyCastle包
搜索名爲：BouncyCastle.Cryptography包安裝：
BouncyCastle使用示例
internal class Program
{
static void Main(string[] args)
{
#region AES加密解密示例
string aesPlaintext = "Hello, 追逐時光者！！！";
byte[] aesKey = new byte[16];
byte[] aesIV = new byte[16];
byte[] aesCiphertext = EncryptAES(aesPlaintext, aesKey, aesIV);
string decryptedAesPlaintext = DecryptAES(aesCiphertext, aesKey, aesIV);
Console.WriteLine("AES plaintext: " + aesPlaintext);
Console.WriteLine("AES ciphertext: " + Convert.ToBase64String(aesCiphertext));
Console.WriteLine("Decrypted AES plaintext: " + decryptedAesPlaintext);
#endregion
#region DES 加密解密示例
string desPlaintext = "Hello, DES!";
byte[] desKey = new byte[8];
byte[] desIV = new byte[8];
byte[] desCiphertext = EncryptDES(desPlaintext, desKey, desIV);
string decryptedDesPlaintext = DecryptDES(desCiphertext, desKey, desIV);
Console.WriteLine("DES plaintext: " + desPlaintext);
Console.WriteLine("DES ciphertext: " + Convert.ToBase64String(desCiphertext));
Console.WriteLine("Decrypted DES plaintext: " + decryptedDesPlaintext);
#endregion
#region RC4 加密解密示例
string rc4Plaintext = "Hello, RC4!";
byte[] rc4Key = new byte[16];
byte[] rc4Ciphertext = EncryptRC4(rc4Plaintext, rc4Key);
string decryptedRc4Plaintext = DecryptRC4(rc4Ciphertext, rc4Key);
Console.WriteLine("RC4 plaintext: " + rc4Plaintext);
Console.WriteLine("RC4 ciphertext: " + Convert.ToBase64String(rc4Ciphertext));
Console.WriteLine("Decrypted RC4 plaintext: " + decryptedRc4Plaintext);
#endregion
#region 哈希算法示例
// MD5 示例
string md5Plaintext = "Hello, MD5!";
string md5Hash = CalculateMD5Hash(md5Plaintext);
Console.WriteLine("MD5 hash of 'Hello, MD5!': " + md5Hash);
// SHA1 示例
string sha1Plaintext = "Hello, SHA1!";
string sha1Hash = CalculateSHA1Hash(sha1Plaintext);
Console.WriteLine("SHA1 hash of 'Hello, SHA1!': " + sha1Hash);
// SHA256 示例
string sha256Plaintext = "Hello, SHA256!";
string sha256Hash = CalculateSHA256Hash(sha256Plaintext);
Console.WriteLine("SHA256 hash of 'Hello, SHA256!': " + sha256Hash);
#endregion
}
#region AES加密解密示例
/// <summary>
/// AES 加密方法
/// </summary>
/// <param name="plaintext">plaintext</param>
/// <param name="key">key</param>
/// <param name="iv">iv</param>
/// <returns></returns>
public static byte[] EncryptAES(string plaintext, byte[] key, byte[] iv)
{
IBufferedCipher cipher = CipherUtilities.GetCipher("AES/CTR/PKCS7Padding");
cipher.Init(true, new ParametersWithIV(ParameterUtilities.CreateKeyParameter("AES", key), iv));
return cipher.DoFinal(System.Text.Encoding.UTF8.GetBytes(plaintext));
}
/// <summary>
/// AES 解密方法
/// </summary>
/// <param name="ciphertext">ciphertext</param>
/// <param name="key">key</param>
/// <param name="iv">iv</param>
/// <returns></returns>
public static string DecryptAES(byte[] ciphertext, byte[] key, byte[] iv)
{
IBufferedCipher cipher = CipherUtilities.GetCipher("AES/CTR/PKCS7Padding");
cipher.Init(false, new ParametersWithIV(ParameterUtilities.CreateKeyParameter("AES", key), iv));
byte[] plaintext = cipher.DoFinal(ciphertext);
return System.Text.Encoding.UTF8.GetString(plaintext);
}
#endregion
#region DES 加密解密示例
/// <summary>
/// DES 加密方法
/// </summary>
/// <param name="plaintext">plaintext</param>
/// <param name="key">key</param>
/// <param name="iv">iv</param>
/// <returns></returns>
public static byte[] EncryptDES(string plaintext, byte[] key, byte[] iv)
{
IBufferedCipher cipher = CipherUtilities.GetCipher("DES/CBC/PKCS7Padding");
cipher.Init(true, new ParametersWithIV(ParameterUtilities.CreateKeyParameter("DES", key), iv));
return cipher.DoFinal(System.Text.Encoding.UTF8.GetBytes(plaintext));
}
/// <summary>
/// DES 解密方法
/// </summary>
/// <param name="ciphertext">ciphertext</param>
/// <param name="key">key</param>
/// <param name="iv">iv</param>
/// <returns></returns>
public static string DecryptDES(byte[] ciphertext, byte[] key, byte[] iv)
{
IBufferedCipher cipher = CipherUtilities.GetCipher("DES/CBC/PKCS7Padding");
cipher.Init(false, new ParametersWithIV(ParameterUtilities.CreateKeyParameter("DES", key), iv));
byte[] plaintext = cipher.DoFinal(ciphertext);
return System.Text.Encoding.UTF8.GetString(plaintext);
}
#endregion
#region RC4 加密解密示例
/// <summary>
/// RC4 加密方法
/// </summary>
/// <param name="plaintext">plaintext</param>
/// <param name="key">key</param>
/// <returns></returns>
public static byte[] EncryptRC4(string plaintext, byte[] key)
{
IStreamCipher cipher = new RC4Engine();
cipher.Init(true, new KeyParameter(key));
byte[] data = System.Text.Encoding.UTF8.GetBytes(plaintext);
byte[] ciphertext = new byte[data.Length];
cipher.ProcessBytes(data, 0, data.Length, ciphertext, 0);
return ciphertext;
}
/// <summary>
/// RC4 解密方法
/// </summary>
/// <param name="ciphertext">ciphertext</param>
/// <param name="key">key</param>
/// <returns></returns>
public static string DecryptRC4(byte[] ciphertext, byte[] key)
{
IStreamCipher cipher = new RC4Engine();
cipher.Init(false, new KeyParameter(key));
byte[] plaintext = new byte[ciphertext.Length];
cipher.ProcessBytes(ciphertext, 0, ciphertext.Length, plaintext, 0);
return System.Text.Encoding.UTF8.GetString(plaintext);
}
#endregion
#region 哈希算法示例
/// <summary>
/// 計算 MD5 哈希
/// </summary>
/// <param name="input">input</param>
/// <returns></returns>
public static string CalculateMD5Hash(string input)
{
IDigest digest = new MD5Digest();
byte[] hash = new byte[digest.GetDigestSize()];
byte[] data = System.Text.Encoding.UTF8.GetBytes(input);
digest.BlockUpdate(data, 0, data.Length);
digest.DoFinal(hash, 0);
return Convert.ToBase64String(hash);
}
/// <summary>
/// 計算 SHA1 哈希
/// </summary>
/// <param name="input">input</param>
/// <returns></returns>
public static string CalculateSHA1Hash(string input)
{
IDigest digest = new Sha1Digest();
byte[] hash = new byte[digest.GetDigestSize()];
byte[] data = System.Text.Encoding.UTF8.GetBytes(input);
digest.BlockUpdate(data, 0, data.Length);
digest.DoFinal(hash, 0);
return Convert.ToBase64String(hash);
}
/// <summary>
/// 計算 SHA256 哈希
/// </summary>
/// <param name="input">input</param>
/// <returns></returns>
public static string CalculateSHA256Hash(string input)
{
IDigest digest = new Sha256Digest();
byte[] hash = new byte[digest.GetDigestSize()];
byte[] data = System.Text.Encoding.UTF8.GetBytes(input);
digest.BlockUpdate(data, 0, data.Length);
digest.DoFinal(hash, 0);
return Convert.ToBase64String(hash);
}
#endregion
}
輸出結果：
項目源碼地址
更多項目實用功能和特性歡迎前往項目開源地址查看👀，別忘了給項目一個Star支持💖。
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