AES加密 对应的 C#/JAVA 方法
2024-08-26 01:28:21
由于最近在项目中用到，之前在网上找了好多，来来回回，终于整出来了。 贴出来以后用起来方便 C# [csharp] view plaincopyprint?
#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, , _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, , _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 = ;
if (bytes != null)
{
StringBuilder strB = new StringBuilder(); if (bytes.Length < iLength)
{
iLength = bytes.Length;
} for (int i = ; 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 % ) != )
{
hexString += " ";
}
Byte[] returnBytes = new Byte[hexString.Length / ];
for (Int32 i = ; i < returnBytes.Length; i++)
{
returnBytes[i] = Convert.ToByte(hexString.Substring(i * , ), );
}
return returnBytes;
}
#endregion #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, , _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, , _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 = ;
if (bytes != null)
{
StringBuilder strB = new StringBuilder(); if (bytes.Length < iLength)
{
iLength = bytes.Length;
} for (int i = ; 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 % ) != )
{
hexString += " ";
}
Byte[] returnBytes = new Byte[hexString.Length / ];
for (Int32 i = ; i < returnBytes.Length; i++)
{
returnBytes[i] = Convert.ToByte(hexString.Substring(i * , ), );
}
return returnBytes;
}
#endregion
JAVA: [java] view plaincopyprint?
/**
* 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() != ) {
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("");
}
if (sKey.length() != ) {
throw new IllegalArgumentException("");
} 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 = ; i < buf.length; i++) {
String hex = Integer.toHexString(buf[i] & 0xFF);
if (hex.length() == ) {
hex = '' + 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() < )
return null;
byte[] result = new byte[hexStr.length() / ];
for (int i = ; i < hexStr.length() / ; i++) {
int high = Integer.parseInt(hexStr.substring(i * , i * + ), );
int low = Integer.parseInt(hexStr.substring(i * + , i * + ),
);
result[i] = (byte) (high * + low);
}
return result;
} /**
* 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() != ) {
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("");
}
if (sKey.length() != ) {
throw new IllegalArgumentException("");
} 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 = ; i < buf.length; i++) {
String hex = Integer.toHexString(buf[i] & 0xFF);
if (hex.length() == ) {
hex = '' + 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() < )
return null;
byte[] result = new byte[hexStr.length() / ];
for (int i = ; i < hexStr.length() / ; i++) {
int high = Integer.parseInt(hexStr.substring(i * , i * + ), );
int low = Integer.parseInt(hexStr.substring(i * + , i * + ),
);
result[i] = (byte) (high * + low);
}
return result;
}
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