C#中免費(fèi)密碼庫BouncyCastle的使用詳解
前言
今天給大家分享一款C#版開源、免費(fèi)的Bouncy Castle密碼庫:BouncyCastle。
項(xiàng)目介紹
BouncyCastle是一款C#版開源、免費(fèi)的Bouncy Castle密碼庫,開發(fā)人員可以通過該項(xiàng)目在他們的 C# 應(yīng)用程序中使用 Bouncy Castle 提供的各種密碼學(xué)功能,從而加強(qiáng)數(shù)據(jù)的安全性和保護(hù)隱私信息。
Bouncy Castle介紹
Bouncy Castle是一個(gè)流行的密碼學(xué)庫,提供了廣泛的密碼算法和協(xié)議的實(shí)現(xiàn)(包括對(duì)稱加密、非對(duì)稱加密、哈希函數(shù)、數(shù)字簽名等)。它由澳大利亞注冊(cè)的慈善組織“Bouncy Castle軍團(tuán)”開發(fā),旨在提供可靠而安全的加密解決方案。
項(xiàng)目源代碼
創(chuàng)建控制臺(tái)應(yīng)用
創(chuàng)建一個(gè)名為:BouncyCastleExercise
的控制臺(tái)。
安裝BouncyCastle包
搜索名為: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(shí)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(jì)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(jì)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(jì)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(jié)果:
項(xiàng)目源碼地址
https://github.com/bcgit/bc-csharp
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