public void ReadHeader_CheckHashCode()
{
var fileName = Path.Combine(testFolder, "file.bin");
var bytes = new byte[] {
0, // version
4, 0, // length of blocks
1, 0, 0, 0, // length of source file
0, 0, 0, 0, // length of source file
1, 2, 3, 4, // hash code
5, 6, 7, 8, // hash code
9, 10, 11, 12, // hash code
13, 14, 15, 16, // hash code
0, 0, 0, 0 // first block
};
File.WriteAllBytes(fileName, bytes);
using (reader = new RsaFileReader(fileName)) {
reader.ReadHeader();
var expected = new byte[] {
1, 2, 3, 4,
5, 6, 7, 8,
9, 10, 11, 12,
13, 14, 15, 16
};
TestHelper.CheckArray(expected, reader.HashCode);
}
}
public void ReadHeader_FileTooSmall()
{
var fileName = Path.Combine(testFolder, "file.h");
var bytes = new byte[26];
File.WriteAllBytes(fileName, bytes);
using (reader = new RsaFileReader(fileName)) {
Assert.Throws(typeof(SourceFileException), () => reader.ReadHeader());
}
}
public void ReadHeader_CheckVersion()
{
var fileName = Path.Combine(testFolder, "file.bin");
var bytes = new byte[27];
bytes[0] = 12;
File.WriteAllBytes(fileName, bytes);
using (reader = new RsaFileReader(fileName)) {
reader.ReadHeader();
Assert.AreEqual(12, reader.Version);
}
}
public void ReadHeader_CheckBlockLength()
{
var fileName = Path.Combine(testFolder, "file.bin");
var bytes = new byte[27];
bytes[1] = 23;
bytes[2] = 1;
File.WriteAllBytes(fileName, bytes);
using (reader = new RsaFileReader(fileName)) {
reader.ReadHeader();
Assert.AreEqual(279, reader.BlockLength);
}
}
public void ReadNextBlock_ZeroBeforeNumber()
{
var fileName = Path.Combine(testFolder, "file.bin");
var bytes = new byte[29];
bytes[1] = 2;
bytes[27] = 45;
bytes[28] = 0;
File.WriteAllBytes(fileName, bytes);
using (reader = new RsaFileReader(fileName)) {
reader.ReadHeader();
var number = reader.ReadNextBlock();
var expectedNumber = BigNumber.FromBytes(new[] { 45 });
Assert.AreEqual(CompareResult.Equal, expectedNumber.Compare(number));
}
}
public void ReadNextBlock_BlockLengthIs5()
{
var fileName = Path.Combine(testFolder, "file.bin");
var bytes = new byte[32];
bytes[1] = 5;
bytes[27] = 23;
bytes[28] = 67;
bytes[29] = 12;
bytes[30] = 149;
bytes[31] = 253;
File.WriteAllBytes(fileName, bytes);
using (reader = new RsaFileReader(fileName)) {
reader.ReadHeader();
var number = reader.ReadNextBlock();
var expectedNumber = BigNumber.FromBytes(new[] { 23, 67, 12, 149, 253 });
Assert.AreEqual(CompareResult.Equal, expectedNumber.Compare(number));
}
}
public void ReadHeader_CheckSourceFileLength()
{
var fileName = Path.Combine(testFolder, "file.bin");
var bytes = new byte[27];
// 10 FF FF FF FF FF FF FF
bytes[3] = 255;
bytes[4] = 255;
bytes[5] = 255;
bytes[6] = 255;
bytes[7] = 255;
bytes[8] = 255;
bytes[9] = 255;
bytes[10] = 16;
File.WriteAllBytes(fileName, bytes);
using (reader = new RsaFileReader(fileName)) {
reader.ReadHeader();
Assert.AreEqual(1224979098644774911, reader.SourceFileLength);
}
}
public void ReadNextBlock_BlockContainsOnlyZeros()
{
var fileName = Path.Combine(testFolder, "file.bin");
var bytes = new byte[] {
0, // version
4, 0, // length of blocks
1, 0, 0, 0, // length of source file
0, 0, 0, 0, // length of source file
0, 0, 0, 0, // hash code
0, 0, 0, 0, // hash code
0, 0, 0, 0, // hash code
0, 0, 0, 0, // hash code
0, 0, 0, 0 // first block
};
File.WriteAllBytes(fileName, bytes);
using (reader = new RsaFileReader(fileName)) {
reader.ReadHeader();
var number = reader.ReadNextBlock();
Assert.IsTrue(number.IsZero);
}
}