public void Remove_RemovesPaddingFromBlock_Removed()
{
PKCS7Padding padding = new PKCS7Padding();
byte[] bytes = { 0, 0, 0, 0, 4, 4, 4, 4 };
CollectionAssert.AreEqual(new byte[] { 0, 0, 0, 0 }, padding.Remove(bytes));
}
public void Remove_RemovesPaddingFromBlock_RemovedWholeBlock()
{
PKCS7Padding padding = new PKCS7Padding();
byte[] bytes = { 8, 8, 8, 8, 8, 8, 8, 8 };
CollectionAssert.AreEqual(new byte[0], padding.Remove(bytes));
}
public void Add_AddsPaddingToEmptyBlock_Added()
{
PKCS7Padding padding = new PKCS7Padding();
byte[] bytes = new byte[8];
padding.Add(bytes);
CollectionAssert.AreEqual(new byte[] { 8, 8, 8, 8, 8, 8, 8, 8 }, bytes);
}
public void Add_AddsPaddingToBlock_Added()
{
PKCS7Padding padding = new PKCS7Padding();
byte[] bytes = new byte[8];
padding.Add(bytes, 3);
CollectionAssert.AreEqual(new byte[] { 0, 0, 0, 0, 4, 4, 4, 4 }, bytes);
}
public void Add_ProvidesEmptyBlock_Added()
{
byte[] bytes = new byte[16];
PKCS7Padding padding = new PKCS7Padding();
padding.Add(bytes);
CollectionAssert.AreEqual(new byte[] { 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16 }, bytes);
}
public void Add_ProvidesFullBlock_NotAdded()
{
byte[] bytes = new byte[16];
PKCS7Padding padding = new PKCS7Padding();
padding.Add(bytes, 16);
CollectionAssert.AreEqual(new byte[16], bytes);
}
public void PadTest()
{
PKCS7Padding target = new PKCS7Padding(); // TODO: Initialize to an appropriate value
int blockSize = 0; // TODO: Initialize to an appropriate value
byte[] input = null; // TODO: Initialize to an appropriate value
byte[] expected = null; // TODO: Initialize to an appropriate value
byte[] actual;
actual = target.Pad(blockSize, input);
Assert.AreEqual(expected, actual);
Assert.Inconclusive("Verify the correctness of this test method.");
}
public void Add_ProvidesBlock_Added()
{
byte[] bytes = new byte[16];
bytes[0] = 1;
bytes[1] = 2;
bytes[2] = 3;
bytes[3] = 4;
bytes[4] = 5;
PKCS7Padding padding = new PKCS7Padding();
padding.Add(bytes, 4);
CollectionAssert.AreEqual(new byte[] { 1, 2, 3, 4, 5, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11 }, bytes);
}
/*
* 对明文加密.
* @param text 需要加密的明文
* @return 加密后base64编码的字符串
*/
private String Encrypt(String random, String plaintext)
{
try
{
byte[] randomBytes = System.Text.Encoding.UTF8.GetBytes(random); // random.getBytes(CHARSET);
byte[] plainTextBytes = System.Text.Encoding.UTF8.GetBytes(plaintext); // plaintext.getBytes(CHARSET);
byte[] lengthByte = Utils.Int2Bytes(plainTextBytes.Length);
byte[] corpidBytes = System.Text.Encoding.UTF8.GetBytes(corpId); // corpId.getBytes(CHARSET);
//MemoryStream byteStream = new MemoryStream();
var bytestmp = new List <byte>();
bytestmp.AddRange(randomBytes);
bytestmp.AddRange(lengthByte);
bytestmp.AddRange(plainTextBytes);
bytestmp.AddRange(corpidBytes);
byte[] padBytes = PKCS7Padding.GetPaddingBytes(bytestmp.Count);
bytestmp.AddRange(padBytes);
byte[] unencrypted = bytestmp.ToArray();
RijndaelManaged rDel = new RijndaelManaged
{
Mode = CipherMode.CBC,
Padding = PaddingMode.Zeros,
Key = aesKey,
IV = aesKey.ToList().Take(16).ToArray()
};
ICryptoTransform cTransform = rDel.CreateEncryptor();
byte[] resultArray = cTransform.TransformFinalBlock(unencrypted, 0, unencrypted.Length);
return(Convert.ToBase64String(resultArray, 0, resultArray.Length));
//Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
//SecretKeySpec keySpec = new SecretKeySpec(aesKey, "AES");
//IvParameterSpec iv = new IvParameterSpec(aesKey, 0, 16);
//cipher.init(Cipher.ENCRYPT_MODE, keySpec, iv);
//byte[] encrypted = cipher.doFinal(unencrypted);
//String result = base64.encodeToString(encrypted);
//return result;
}
catch (Exception)
{
throw new DingTalkEncryptException(DingTalkEncryptException.COMPUTE_ENCRYPT_TEXT_ERROR);
}
}
public void PKCS7PaddingConstructorTest()
{
PKCS7Padding target = new PKCS7Padding();
Assert.Inconclusive("TODO: Implement code to verify target");
}
public void Setup()
{
_padder = new PKCS7Padding();
}
public void SetUp()
{
_padding = new PKCS7Padding();
}
/*
* 对密文进行解密.
* @param text 需要解密的密文
* @return 解密得到的明文
*/
private String Decrypt(String text)
{
byte[] originalArr;
try
{
byte[] toEncryptArray = Convert.FromBase64String(text);
RijndaelManaged rDel = new RijndaelManaged
{
Mode = CipherMode.CBC,
Padding = PaddingMode.Zeros,
Key = aesKey,
IV = aesKey.ToList().Take(16).ToArray()
};
ICryptoTransform cTransform = rDel.CreateDecryptor();
originalArr = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
//return System.Text.UTF8Encoding.UTF8.GetString(resultArray);
//// 设置解密模式为AES的CBC模式
//Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
//SecretKeySpec keySpec = new SecretKeySpec(aesKey, "AES");
//IvParameterSpec iv = new IvParameterSpec(Arrays.copyOfRange(aesKey, 0, 16));
//cipher.init(Cipher.DECRYPT_MODE, keySpec, iv);
//// 使用BASE64对密文进行解码
//byte[] encrypted = Base64.decodeBase64(text);
//// 解密
//originalArr = cipher.doFinal(encrypted);
}
catch (Exception)
{
throw new DingTalkEncryptException(DingTalkEncryptException.COMPUTE_DECRYPT_TEXT_ERROR);
}
String plainText;
String fromCorpid;
try
{
// 去除补位字符
byte[] bytes = PKCS7Padding.RemovePaddingBytes(originalArr);
Console.Out.WriteLine("bytes size:" + bytes.Length);
// 分离16位随机字符串,网络字节序和corpId
byte[] networkOrder = bytes.Skip(16).Take(4).ToArray();// Arrays.copyOfRange(bytes, 16, 20);
for (int i = 0; i < 4; i++)
{
Console.Out.WriteLine("networkOrder size:" + (int)networkOrder[i]);
}
Console.Out.WriteLine("bytes plainText:" + networkOrder.Length + " " + JsonSerializer.Serialize(networkOrder));
int plainTextLegth = Utils.Bytes2int(networkOrder);
Console.Out.WriteLine("bytes size:" + plainTextLegth);
plainText = System.Text.UTF8Encoding.UTF8.GetString(bytes.Skip(20).Take(plainTextLegth).ToArray()); // new String(Arrays.copyOfRange(bytes, 20, 20 + plainTextLegth), CHARSET);
fromCorpid = System.Text.UTF8Encoding.UTF8.GetString(bytes.Skip(20 + plainTextLegth).ToArray()); //new String(Arrays.copyOfRange(bytes, 20 + plainTextLegth, bytes.length), CHARSET);
Console.Out.WriteLine("bytes plainText:" + plainText);
}
catch (Exception)
{
throw new DingTalkEncryptException(DingTalkEncryptException.COMPUTE_DECRYPT_TEXT_LENGTH_ERROR);
}
Console.Out.WriteLine(fromCorpid + "=====" + corpId);
// corpid不相同的情况
if (!fromCorpid.Equals(corpId))
{
throw new DingTalkEncryptException(DingTalkEncryptException.COMPUTE_DECRYPT_TEXT_CORPID_ERROR);
}
return(plainText);
}
