AES加密 对应的 C# 方法
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对应c#加密方法
#region AES加解密 /// <summary> ///AES加密(加密步骤) ///1,加密字符串得到2进制数组; ///2,将2禁止数组转为16进制; ///3,进行base64编码 /// </summary> /// <param name="toEncrypt">要加密的字符串</param> /// <param name="key">密钥</param> public String Encrypt(String toEncrypt, String key) { Byte[] _Key = Encoding.ASCII.GetBytes(key); Byte[] _Source = Encoding.UTF8.GetBytes(toEncrypt); Aes aes = Aes.Create("AES"); aes.Mode = CipherMode.ECB; aes.Padding = PaddingMode.PKCS7; aes.Key = _Key; ICryptoTransform cTransform = aes.CreateEncryptor(); Byte[] cryptData = cTransform.TransformFinalBlock(_Source, 0, _Source.Length); String HexCryptString = Hex_2To16(cryptData); Byte[] HexCryptData = Encoding.UTF8.GetBytes(HexCryptString); String CryptString =Convert.ToBase64String(HexCryptData); return CryptString; } /// <summary> /// AES解密(解密步骤) /// 1,将BASE64字符串转为16进制数组 /// 2,将16进制数组转为字符串 /// 3,将字符串转为2进制数据 /// 4,用AES解密数据 /// </summary> /// <param name="encryptedSource">已加密的内容</param> /// <param name="key">密钥</param> public String Decrypt(string encryptedSource, string key) { Byte[] _Key = Encoding.ASCII.GetBytes(key); Aes aes = Aes.Create("AES"); aes.Mode = CipherMode.ECB; aes.Padding = PaddingMode.PKCS7; aes.Key = _Key; ICryptoTransform cTransform = aes.CreateDecryptor(); Byte[] encryptedData = Convert.FromBase64String(encryptedSource); String encryptedString = Encoding.UTF8.GetString(encryptedData); Byte[] _Source = Hex_16To2(encryptedString); Byte[] originalSrouceData = cTransform.TransformFinalBlock(_Source, 0, _Source.Length); String originalString = Encoding.UTF8.GetString(originalSrouceData); return originalString; } /// <summary> /// 2进制转16进制 /// </summary> String Hex_2To16(Byte[] bytes) { String hexString = String.Empty; Int32 iLength = 65535; if (bytes != null) { StringBuilder strB = new StringBuilder(); if (bytes.Length < iLength) { iLength = bytes.Length; } for (int i = 0; i < iLength; i++) { strB.Append(bytes[i].ToString("X2")); } hexString = strB.ToString(); } return hexString; } /// <summary> /// 16进制转2进制 /// </summary> Byte[] Hex_16To2(String hexString) { if ((hexString.Length % 2) != 0) { hexString += " "; } Byte[] returnBytes = new Byte[hexString.Length / 2]; for (Int32 i = 0; i < returnBytes.Length; i++) { returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16); } return returnBytes; } #endregion/** * 加密--把加密后的byte数组先进行二进制转16进制在进行base64编码 * @param sSrc * @param sKey * @return * @throws Exception */public static String encrypt(String sSrc, String sKey) throws Exception {if (sKey == null) {throw new IllegalArgumentException("Argument sKey is null.");}if (sKey.length() != 16) {throw new IllegalArgumentException("Argument sKey'length is not 16.");}byte[] raw = sKey.getBytes("ASCII");SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");Cipher cipher = Cipher.getInstance("AES");cipher.init(Cipher.ENCRYPT_MODE, skeySpec);byte[] encrypted = cipher.doFinal(sSrc.getBytes("UTF-8"));String tempStr = parseByte2HexStr(encrypted);Base64Encoder encoder = new Base64Encoder();return encoder.encode(tempStr.getBytes("UTF-8"));}/** *解密--先 进行base64解码,在进行16进制转为2进制然后再解码 * @param sSrc * @param sKey * @return * @throws Exception */public static String decrypt(String sSrc, String sKey) throws Exception {if (sKey == null) {throw new IllegalArgumentException("499");}if (sKey.length() != 16) {throw new IllegalArgumentException("498");}byte[] raw = sKey.getBytes("ASCII");SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");Cipher cipher = Cipher.getInstance("AES");cipher.init(Cipher.DECRYPT_MODE, skeySpec);Base64Encoder encoder = new Base64Encoder();byte[] encrypted1 = encoder.decode(sSrc);String tempStr = new String(encrypted1, "utf-8");encrypted1 = parseHexStr2Byte(tempStr);byte[] original = cipher.doFinal(encrypted1);String originalString = new String(original, "utf-8");return originalString;}/** * 将二进制转换成16进制 * * @param buf * @return */public static String parseByte2HexStr(byte buf[]) {StringBuffer sb = new StringBuffer();for (int i = 0; i < buf.length; i++) {String hex = Integer.toHexString(buf[i] & 0xFF);if (hex.length() == 1) {hex = '0' + hex;}sb.append(hex.toUpperCase());}return sb.toString();}/** * 将16进制转换为二进制 * * @param hexStr * @return */public static byte[] parseHexStr2Byte(String hexStr) {if (hexStr.length() < 1)return null;byte[] result = new byte[hexStr.length() / 2];for (int i = 0; i < hexStr.length() / 2; i++) {int high = Integer.parseInt(hexStr.substring(i * 2, i * 2 + 1), 16);int low = Integer.parseInt(hexStr.substring(i * 2 + 1, i * 2 + 2),16);result[i] = (byte) (high * 16 + low);}return result;}
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