private byte[] Decrypt(byte[] EncData)
{
byte[] Result = null;
try
{
System.Security.Cryptography.RijndaelManaged Enc = new System.Security.Cryptography.RijndaelManaged();
Enc.KeySize = 256;
Enc.Key = this.Encryption_Key();
Enc.IV = this.Encryption_IV();
System.IO.MemoryStream memoryStream = new System.IO.MemoryStream(EncData);
System.Security.Cryptography.CryptoStream cryptoStream = null;
cryptoStream = new System.Security.Cryptography.CryptoStream(memoryStream, Enc.CreateDecryptor(), System.Security.Cryptography.CryptoStreamMode.Read);
byte[] TempDecryptArr = null;
TempDecryptArr = new byte[EncData.Length + 1];
int decryptedByteCount = 0;
decryptedByteCount = cryptoStream.Read(TempDecryptArr, 0, EncData.Length);
cryptoStream.Close();
memoryStream.Close();
cryptoStream.Dispose();
memoryStream.Dispose();
Result = new byte[decryptedByteCount + 1];
Array.Copy(TempDecryptArr, Result, decryptedByteCount);
}
catch (Exception)
{
Result = null;
}
return(Result);
}
private byte[] Encrypt(byte[] PlainData)
{
byte[] Result = null;
try
{
System.Security.Cryptography.RijndaelManaged Enc = new System.Security.Cryptography.RijndaelManaged();
Enc.KeySize = 256;
Enc.Key = this.Encryption_Key();
Enc.IV = this.Encryption_IV();
System.IO.MemoryStream memoryStream = new System.IO.MemoryStream();
System.Security.Cryptography.CryptoStream cryptoStream = null;
cryptoStream = new System.Security.Cryptography.CryptoStream(memoryStream, Enc.CreateEncryptor(), System.Security.Cryptography.CryptoStreamMode.Write);
cryptoStream.Write(PlainData, 0, PlainData.Length);
cryptoStream.FlushFinalBlock();
Result = memoryStream.ToArray();
cryptoStream.Close();
memoryStream.Close();
cryptoStream.Dispose();
memoryStream.Dispose();
}
catch (Exception)
{
Result = null;
}
return(Result);
}
/// <summary>
/// 解密指定的字节数据
/// </summary>
/// <param name="originalData">加密的字节数据</param>
/// <param name="keyData">解密密钥</param>
/// <param name="ivData"></param>
/// <returns>原始文本</returns>
private static byte[] Decrypt(byte[] encryptedData, byte[] keyData, byte[] ivData)
{
MemoryStream memoryStream = new MemoryStream();
//创建Rijndael加密算法
System.Security.Cryptography.Rijndael rijndael = System.Security.Cryptography.Rijndael.Create();
rijndael.Key = keyData;
rijndael.IV = ivData;
System.Security.Cryptography.CryptoStream cryptoStream = new System.Security.Cryptography.CryptoStream(
memoryStream, rijndael.CreateDecryptor(), System.Security.Cryptography.CryptoStreamMode.Write);
try
{
cryptoStream.Write(encryptedData, 0, encryptedData.Length);
cryptoStream.Close();
cryptoStream.Dispose();
return(memoryStream.ToArray());
}
catch (Exception ex)
{
LogManager.Instance.WriteLog("GlobalMethods.Decrypt", ex);
return(null);
}
finally
{
memoryStream.Close();
memoryStream.Dispose();
}
}
protected override void Dispose(bool disposing)
{
if (_cryptoStream != null)
{
_cryptoStream.Dispose();
_cryptoStream = null;
}
if (_cryptoTransform != null)
{
_cryptoTransform.Dispose();
_cryptoTransform = null;
}
base.Dispose(disposing);
}
private byte[] Encrypt(byte[] PlainData)
{
byte[] Result = null;
try
{
System.Security.Cryptography.RijndaelManaged Enc = new System.Security.Cryptography.RijndaelManaged();
Enc.KeySize = 256;
Enc.Key = this.Encryption_Key();
Enc.IV = this.Encryption_IV();
System.IO.MemoryStream memoryStream = new System.IO.MemoryStream();
System.Security.Cryptography.CryptoStream cryptoStream = null;
cryptoStream = new System.Security.Cryptography.CryptoStream(memoryStream, Enc.CreateEncryptor(), System.Security.Cryptography.CryptoStreamMode.Write);
cryptoStream.Write(PlainData, 0, PlainData.Length);
cryptoStream.FlushFinalBlock();
Result = memoryStream.ToArray();
cryptoStream.Close();
memoryStream.Close();
cryptoStream.Dispose();
memoryStream.Dispose();
}
catch (Exception)
{
Result = null;
}
return Result;
}
private byte[] Decrypt(byte[] EncData)
{
byte[] Result = null;
try
{
System.Security.Cryptography.RijndaelManaged Enc = new System.Security.Cryptography.RijndaelManaged();
Enc.KeySize = 256;
Enc.Key = this.Encryption_Key();
Enc.IV = this.Encryption_IV();
System.IO.MemoryStream memoryStream = new System.IO.MemoryStream(EncData);
System.Security.Cryptography.CryptoStream cryptoStream = null;
cryptoStream = new System.Security.Cryptography.CryptoStream(memoryStream, Enc.CreateDecryptor(), System.Security.Cryptography.CryptoStreamMode.Read);
byte[] TempDecryptArr = null;
TempDecryptArr = new byte[EncData.Length + 1];
int decryptedByteCount = 0;
decryptedByteCount = cryptoStream.Read(TempDecryptArr, 0, EncData.Length);
cryptoStream.Close();
memoryStream.Close();
cryptoStream.Dispose();
memoryStream.Dispose();
Result = new byte[decryptedByteCount + 1];
Array.Copy(TempDecryptArr, Result, decryptedByteCount);
}
catch (Exception)
{
Result = null;
}
return Result;
}
/// <summary>
/// ����ָ�����ֽ�����
/// </summary>
/// <param name="originalData">ԭʼ�ֽ�����</param>
/// <param name="keyData">������Կ</param>
/// <param name="ivData"></param>
/// <returns>���ܺ������</returns>
private static byte[] Encrypt(byte[] originalData, byte[] keyData, byte[] ivData)
{
MemoryStream memoryStream = new MemoryStream();
//����Rijndael�����㷨
System.Security.Cryptography.Rijndael rijndael = System.Security.Cryptography.Rijndael.Create();
rijndael.Key = keyData;
rijndael.IV = ivData;
System.Security.Cryptography.CryptoStream cryptoStream = new System.Security.Cryptography.CryptoStream(
memoryStream, rijndael.CreateEncryptor(), System.Security.Cryptography.CryptoStreamMode.Write);
try
{
cryptoStream.Write(originalData, 0, originalData.Length);
cryptoStream.Close();
cryptoStream.Dispose();
return memoryStream.ToArray();
}
catch (Exception ex)
{
LogManager.Instance.WriteLog("GlobalMethods.Encrypt", ex);
return null;
}
finally
{
memoryStream.Close();
memoryStream.Dispose();
}
}
