//加密文件
if (this.textBox1.Text == "")
{//检查被加密文件
MessageBox.Show("请选择被加密文件!", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
if (this.textBox2.Text == "")
{//检查加密输出文件
MessageBox.Show("请输入加密输出文件!", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
if (this.textBox5.Text.Length < 6 | this.textBox5.Text != this.textBox4.Text)
{//检查密码输入是否正确
MessageBox.Show("请输入正确的密码!", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
//获得被加密文件名
string MyInFileName = listView.SelectedItems[0].Tag.ToString(); ;
//获得加密输出文件名
string MyOutFileName = this.textBox2.Text;
//设定初始向量
byte[] MyDESIV ={ 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 };
byte[] MyDESKey ={ };
//根据密码设置密钥大小
string MyKeyString = this.textBox5.Text;
if (MyKeyString.Length == 6)
{
MyDESKey = new byte[]{(byte)MyKeyString[0],(byte)MyKeyString[1],(byte)MyKeyString[2],
(byte)MyKeyString[3],(byte)MyKeyString[4],(byte)MyKeyString[5],
0x07,0x08};
}
if (MyKeyString.Length == 7)
{
MyDESKey = new byte[]{(byte)MyKeyString[0],(byte)MyKeyString[1],(byte)MyKeyString[2],
(byte)MyKeyString[3],(byte)MyKeyString[4],(byte)MyKeyString[5],
(byte)MyKeyString[6],0x07};
}
if (MyKeyString.Length >= 8)
{
MyDESKey = new byte[]{(byte)MyKeyString[0],(byte)MyKeyString[1],(byte)MyKeyString[2],
(byte)MyKeyString[3],(byte)MyKeyString[4],(byte)MyKeyString[5],
(byte)MyKeyString[6],(byte)MyKeyString[7]};
}
//创建输入和输出文件流
FileStream MyInFileStream = new FileStream(MyInFileName, FileMode.Open, FileAccess.Read);
FileStream MyOutFileStream = new FileStream(MyOutFileName, FileMode.OpenOrCreate, FileAccess.Write);
MyOutFileStream.SetLength(0);
//每次的中间流.
byte[] InsertData = new byte[100];
//代表已经加密流的大小
int CompletedLength = 0;
//代表要加密文件总的大小
long InFileSize = MyInFileStream.Length;
//创建DES对象
DES MyDES = new DESCryptoServiceProvider();
// 创建加密流
CryptoStream EncryptStream = new CryptoStream(MyOutFileStream, MyDES.CreateEncryptor(MyDESKey, MyDESIV), CryptoStreamMode.Write);
//从输入文件中读取流,然后加密到输出文件中
while (CompletedLength < InFileSize)
{ //每次写入加密文件的数据大小
int Length = MyInFileStream.Read(InsertData, 0, 100);
EncryptStream.Write(InsertData, 0, Length);
CompletedLength = CompletedLength + Length;
}
//关闭流
EncryptStream.Close();
MyOutFileStream.Close();
MyInFileStream.Close();
MessageBox.Show("文件加密已经操作成功!", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
为什么加密不成功?
if (this.textBox1.Text == "")
{//检查被加密文件
MessageBox.Show("请选择被加密文件!", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
if (this.textBox2.Text == "")
{//检查加密输出文件
MessageBox.Show("请输入加密输出文件!", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
if (this.textBox5.Text.Length < 6 | this.textBox5.Text != this.textBox4.Text)
{//检查密码输入是否正确
MessageBox.Show("请输入正确的密码!", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
//获得被加密文件名
string MyInFileName = listView.SelectedItems[0].Tag.ToString(); ;
//获得加密输出文件名
string MyOutFileName = this.textBox2.Text;
//设定初始向量
byte[] MyDESIV ={ 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 };
byte[] MyDESKey ={ };
//根据密码设置密钥大小
string MyKeyString = this.textBox5.Text;
if (MyKeyString.Length == 6)
{
MyDESKey = new byte[]{(byte)MyKeyString[0],(byte)MyKeyString[1],(byte)MyKeyString[2],
(byte)MyKeyString[3],(byte)MyKeyString[4],(byte)MyKeyString[5],
0x07,0x08};
}
if (MyKeyString.Length == 7)
{
MyDESKey = new byte[]{(byte)MyKeyString[0],(byte)MyKeyString[1],(byte)MyKeyString[2],
(byte)MyKeyString[3],(byte)MyKeyString[4],(byte)MyKeyString[5],
(byte)MyKeyString[6],0x07};
}
if (MyKeyString.Length >= 8)
{
MyDESKey = new byte[]{(byte)MyKeyString[0],(byte)MyKeyString[1],(byte)MyKeyString[2],
(byte)MyKeyString[3],(byte)MyKeyString[4],(byte)MyKeyString[5],
(byte)MyKeyString[6],(byte)MyKeyString[7]};
}
//创建输入和输出文件流
FileStream MyInFileStream = new FileStream(MyInFileName, FileMode.Open, FileAccess.Read);
FileStream MyOutFileStream = new FileStream(MyOutFileName, FileMode.OpenOrCreate, FileAccess.Write);
MyOutFileStream.SetLength(0);
//每次的中间流.
byte[] InsertData = new byte[100];
//代表已经加密流的大小
int CompletedLength = 0;
//代表要加密文件总的大小
long InFileSize = MyInFileStream.Length;
//创建DES对象
DES MyDES = new DESCryptoServiceProvider();
// 创建加密流
CryptoStream EncryptStream = new CryptoStream(MyOutFileStream, MyDES.CreateEncryptor(MyDESKey, MyDESIV), CryptoStreamMode.Write);
//从输入文件中读取流,然后加密到输出文件中
while (CompletedLength < InFileSize)
{ //每次写入加密文件的数据大小
int Length = MyInFileStream.Read(InsertData, 0, 100);
EncryptStream.Write(InsertData, 0, Length);
CompletedLength = CompletedLength + Length;
}
//关闭流
EncryptStream.Close();
MyOutFileStream.Close();
MyInFileStream.Close();
MessageBox.Show("文件加密已经操作成功!", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
为什么加密不成功?
解决方案 »
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