// 传入MemoryMappedViewAccessor，加密，解密
private int EncryptDecrypt0(object arg0)// MemoryMappedViewAccessor accessor, Int64 size)
{
MemoryMappedViewAccessor accessor;
Int64 size;
exe_to_thread et = (exe_to_thread)arg0;
accessor = et.accessor;
size = et.size;
//写入文件源数据
int readCount = 0;
//每次读16个字节为一次加密分组
byte[] buffer = new byte[1024];
Int64 pos = 0;
Console.WriteLine("文件线程编号：" + et.ft_threadnum.ToString() + "。处理线程编号：" + et.et_threadnum.ToString());
while ((size - pos) > 0)
{
byte[] temp = null;
// 剩余的字节数大于1024
if ((size - pos) > buffer.Length)
{
for (int index = 0; index < buffer.Length; index++)
{
buffer[index] = accessor.ReadByte(pos + index);
}
temp = buffer;
}
else
{
for (int index = 0; index < size - pos; index++)
{
buffer[index] = accessor.ReadByte(pos + index);
readCount++;
}
temp = new byte[readCount];
Buffer.BlockCopy(buffer, 0, temp, 0, readCount);
}
if (flag) // 加密
{
temp = sM4Utils.encryptECB(secruitKey, false, temp);
}
else // 解密
{
temp = sM4Utils.decryptECB(secruitKey, false, temp);
}
for (int i = 0; i < temp.Length; i++)
{
accessor.Write(pos + i, ref temp[i]);
}
pos += temp.Length;
}
Console.WriteLine("文件线程编号：" + et.ft_threadnum.ToString() + "。处理线程编号：" + et.et_threadnum.ToString() + "处理完成");
//accessor.Dispose();
et.accessor.Dispose();
return(et.et_threadnum);
}
public static void main()
{
byte[] sourcePath = new byte[] {
0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10
};
SM4Utils sm4 = new SM4Utils();
sm4.secretKey = "0123456789abcdeffedcba9876543210";
sm4.hexString = true;
byte[] ciphertext = sm4.encryptECB(sm4.secretKey, false, sourcePath);
Console.WriteLine(BitConverter.ToString(ciphertext));
byte[] plaintext = sm4.decryptECB(sm4.secretKey, false, ciphertext);
Console.WriteLine(BitConverter.ToString(plaintext));
}