asp.net AES加密跟PHP的一致，将加密的2进制byte[]转换为16进制byte[] 的字符串获得

<?php
class AESUtil {

public static function encrypt($input, $key) {

$size = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_ECB);

$input = AESUtil::pkcs5_pad($input, $size);

$td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_ECB, '');

$iv = mcrypt_create_iv (mcrypt_enc_get_iv_size($td), MCRYPT_RAND);

mcrypt_generic_init($td, $key, $iv);

$data = mcrypt_generic($td, $input);

mcrypt_generic_deinit($td);

mcrypt_module_close($td);

$data = strtoupper(bin2hex($data));

return $data;

}

private static function pkcs5_pad ($text, $blocksize) {

$pad = $blocksize - (strlen($text) % $blocksize);

return $text . str_repeat(chr($pad), $pad);

}

public static function decrypt($sStr, $sKey) {

$decrypted= mcrypt_decrypt(

MCRYPT_RIJNDAEL_128,

$sKey,

base64_decode($sStr),

MCRYPT_MODE_ECB

);

$dec_s = strlen($decrypted);

$padding = ord($decrypted[$dec_s-1]);

$decrypted = substr($decrypted, 0, -$padding);

return $decrypted;

}
}
?>

using System;
using System.Collections.Generic;
using System.Text;
using System.Security.Cryptography;
using System.IO;

namespace pay
{
class AESHelper
{

/// <summary>
/// AES加密
/// </summary>
/// <param name="Data">被加密的明文</param>
/// <param name="Key">密钥</param>
/// <param name="Vector">向量</param>
/// <returns>密文</returns>
public static String AESEncrypt(String Data, String Key, String Vector)
{
Byte[] plainBytes = Encoding.UTF8.GetBytes(Data);

Byte[] bKey = new Byte[32];
Array.Copy(Encoding.UTF8.GetBytes(Key.PadRight(bKey.Length)), bKey, bKey.Length);
Byte[] bVector = new Byte[16];
Array.Copy(Encoding.UTF8.GetBytes(Vector.PadRight(bVector.Length)), bVector, bVector.Length);

Byte[] Cryptograph = null; // 加密后的密文

Rijndael Aes = Rijndael.Create();
try
{
// 开辟一块内存流
using (MemoryStream Memory = new MemoryStream())
{
// 把内存流对象包装成加密流对象
using (CryptoStream Encryptor = new CryptoStream(Memory,
Aes.CreateEncryptor(bKey, bVector),
CryptoStreamMode.Write))
{
// 明文数据写入加密流
Encryptor.Write(plainBytes, 0, plainBytes.Length);
Encryptor.FlushFinalBlock();

Cryptograph = Memory.ToArray();
}
}
}
catch
{
Cryptograph = null;
}

return Convert.ToBase64String(Cryptograph);
}

/// <summary>
/// AES解密
/// </summary>
/// <param name="Data">被解密的密文</param>
/// <param name="Key">密钥</param>
/// <param name="Vector">向量</param>
/// <returns>明文</returns>
public static String AESDecrypt(String Data, String Key, String Vector)
{
Byte[] encryptedBytes = Convert.FromBase64String(Data);
Byte[] bKey = new Byte[32];
Array.Copy(Encoding.UTF8.GetBytes(Key.PadRight(bKey.Length)), bKey, bKey.Length);
Byte[] bVector = new Byte[16];
Array.Copy(Encoding.UTF8.GetBytes(Vector.PadRight(bVector.Length)), bVector, bVector.Length);

Byte[] original = null; // 解密后的明文

Rijndael Aes = Rijndael.Create();
try
{
// 开辟一块内存流，存储密文
using (MemoryStream Memory = new MemoryStream(encryptedBytes))
{
// 把内存流对象包装成加密流对象
using (CryptoStream Decryptor = new CryptoStream(Memory,
Aes.CreateDecryptor(bKey, bVector),
CryptoStreamMode.Read))
{
// 明文存储区
using (MemoryStream originalMemory = new MemoryStream())
{
Byte[] Buffer = new Byte[1024];
Int32 readBytes = 0;
while ((readBytes = Decryptor.Read(Buffer, 0, Buffer.Length)) > 0)
{
originalMemory.Write(Buffer, 0, readBytes);
}

original = originalMemory.ToArray();
}
}
}
}
catch
{
original = null;
}
return Encoding.UTF8.GetString(original);
}

/// <summary>
/// AES加密(无向量)
/// </summary>
/// <param name="plainBytes">被加密的明文</param>
/// <param name="key">密钥</param>
/// <returns>密文</returns>
public static string AESEncrypt(String Data, String Key)
{
MemoryStream mStream = new MemoryStream();
RijndaelManaged aes = new RijndaelManaged();

byte[] plainBytes = Encoding.UTF8.GetBytes(Data);
Byte[] bKey = new Byte[32];
Array.Copy(Encoding.UTF8.GetBytes(Key.PadRight(bKey.Length)), bKey, bKey.Length);

aes.Mode = CipherMode.ECB;
aes.Padding = PaddingMode.PKCS7;
aes.KeySize = 128;
// aes.Key = bKey;
aes.IV = Encoding.UTF8.GetBytes(Key);

CryptoStream cryptoStream = new CryptoStream(mStream, aes.CreateEncryptor(), CryptoStreamMode.Write);
try
{
cryptoStream.Write(plainBytes, 0, plainBytes.Length);
cryptoStream.FlushFinalBlock();
byte[] hs = mStream.ToArray();
StringBuilder sb = new StringBuilder();
foreach (byte b in hs)
{
// 以十六进制格式格式化
sb.Append(b.ToString("X2"));
}
return sb.ToString();
// return Convert.ToBase64String(mStream.ToArray());
//Byte[] mStream.ToArray();
//System.Text.UTF8Encoding UTF8 = new System.Text.UTF8Encoding();
//String StringMessage = UTF8.GetString(mStream.ToArray());
//return StringMessage;

}
finally
{
cryptoStream.Close();
mStream.Close();
aes.Clear();
}
}

/// <summary>
/// AES解密(无向量)
/// </summary>
/// <param name="encryptedBytes">被加密的明文</param>
/// <param name="key">密钥</param>
/// <returns>明文</returns>
public static string AESDecrypt(String Data, String Key)
{
Byte[] encryptedBytes = Convert.FromBase64String(Data);
Byte[] bKey = new Byte[32];
Array.Copy(Encoding.UTF8.GetBytes(Key.PadRight(bKey.Length)), bKey, bKey.Length);

MemoryStream mStream = new MemoryStream(encryptedBytes);
//mStream.Write( encryptedBytes, 0, encryptedBytes.Length );
//mStream.Seek( 0, SeekOrigin.Begin );
RijndaelManaged aes = new RijndaelManaged();
aes.Mode = CipherMode.ECB;
aes.Padding = PaddingMode.PKCS7;
aes.KeySize = 128;
aes.Key = bKey;
//   aes.IV = _iV;
CryptoStream cryptoStream = new CryptoStream(mStream, aes.CreateDecryptor(), CryptoStreamMode.Read);
try
{
byte[] tmp = new byte[encryptedBytes.Length + 32];
int len = cryptoStream.Read(tmp, 0, encryptedBytes.Length + 32);
byte[] ret = new byte[len];
Array.Copy(tmp, 0, ret, 0, len);
return Encoding.UTF8.GetString(ret);
}
finally
{
cryptoStream.Close();
mStream.Close();
aes.Clear();
}
}
//下面这一个才能对应上面的PHP版AES加密

/// <summary>
/// AES加密
/// </summary>
/// <param name="str">要加密字符串</param>
/// <returns>返回加密后字符串</returns>
public static String Encrypt_AES(String str,String key)
{
Byte[] keyArray = System.Text.UTF8Encoding.UTF8.GetBytes(key);
Byte[] toEncryptArray = System.Text.UTF8Encoding.UTF8.GetBytes(str);

System.Security.Cryptography.RijndaelManaged rDel = new System.Security.Cryptography.RijndaelManaged();
rDel.Key = keyArray;
rDel.Mode = System.Security.Cryptography.CipherMode.ECB;
rDel.Padding = System.Security.Cryptography.PaddingMode.PKCS7;

System.Security.Cryptography.ICryptoTransform cTransform = rDel.CreateEncryptor();
Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

byte[] hs = resultArray;
StringBuilder sb = new StringBuilder();
foreach (byte b in hs)
{
// 以十六进制格式格式化
sb.Append(b.ToString("X2"));
}
return sb.ToString();

}

/// <summary>
/// AES解密
/// </summary>
/// <param name="str">要解密字符串</param>
/// <returns>返回解密后字符串</returns>
public static String Decrypt_AES(String str)
{
Byte[] keyArray = System.Text.UTF8Encoding.UTF8.GetBytes(strAesKey);
Byte[] toEncryptArray = Convert.FromBase64String(str);
System.Security.Cryptography.RijndaelManaged rDel = new System.Security.Cryptography.RijndaelManaged();
rDel.Key = keyArray;
rDel.Mode = System.Security.Cryptography.CipherMode.ECB;
rDel.Padding = System.Security.Cryptography.PaddingMode.PKCS7;
System.Security.Cryptography.ICryptoTransform cTransform = rDel.CreateDecryptor();
Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
return System.Text.UTF8Encoding.UTF8.GetString(resultArray);
}

}
}

字符串转16进制字节数组
/// <summary>
/// 字符串转16进制字节数组
/// </summary>
/// <param name="hexString"></param>
/// <returns></returns>
private static byte[] strToToHexByte(string hexString)
{
hexString = hexString.Replace(" ", "");
if ((hexString.Length % 2) != 0)
hexString += " ";
byte[] returnBytes = new byte[hexString.Length / 2];
for (int i = 0; i < returnBytes.Length; i++)
returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16);
return returnBytes;
}

/// <summary>
/// AES解密
/// </summary>
/// <param name="str">要解密字符串</param>
/// <returns>返回解密后字符串</returns>
public static String Decrypt_AES(String str, string strAesKey,Byte[] strbyte)
{
Byte[] keyArray = System.Text.UTF8Encoding.UTF8.GetBytes(strAesKey);
Byte[] toEncryptArray =Convert.FromBase64String(str);
if (str+""=="")
{
toEncryptArray = strbyte;
}

//Byte[] toEncryptArray = System.Text.UTF8Encoding.UTF8.GetBytes(str);

System.Security.Cryptography.RijndaelManaged rDel = new System.Security.Cryptography.RijndaelManaged();
rDel.Key = keyArray;
rDel.Mode = System.Security.Cryptography.CipherMode.ECB;
rDel.Padding = System.Security.Cryptography.PaddingMode.PKCS7;

System.Security.Cryptography.ICryptoTransform cTransform = rDel.CreateDecryptor();

Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
return System.Text.UTF8Encoding.UTF8.GetString(resultArray);
}