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using System;
using System.Text;
using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Crypto.Parameters;
using Org.BouncyCastle.Utilities.Test;
namespace Org.BouncyCastle.Crypto.Tests
{
public abstract class CipherTest
: SimpleTest
{
private SimpleTest[] _tests;
private IBlockCipher _engine;
private KeyParameter _validKey;
// protected CipherTest(
// SimpleTest[] tests)
// {
// _tests = tests;
// }
protected CipherTest(
SimpleTest[] tests,
IBlockCipher engine,
KeyParameter validKey)
{
_tests = tests;
_engine = engine;
_validKey = validKey;
}
public override void PerformTest()
{
for (int i = 0; i != _tests.Length; i++)
{
_tests[i].PerformTest();
}
if (_engine != null)
{
//
// state tests
//
byte[] buf = new byte[_engine.GetBlockSize()];
try
{
_engine.ProcessBlock(buf, 0, buf, 0);
Fail("failed initialisation check");
}
catch (InvalidOperationException)
{
// expected
}
bufferSizeCheck((_engine));
}
}
private void bufferSizeCheck(
IBlockCipher engine)
{
byte[] correctBuf = new byte[engine.GetBlockSize()];
byte[] shortBuf = new byte[correctBuf.Length / 2];
engine.Init(true, _validKey);
try
{
engine.ProcessBlock(shortBuf, 0, correctBuf, 0);
Fail("failed short input check");
}
catch (DataLengthException)
{
// expected
}
try
{
engine.ProcessBlock(correctBuf, 0, shortBuf, 0);
Fail("failed short output check");
}
catch (DataLengthException)
{
// expected
}
engine.Init(false, _validKey);
try
{
engine.ProcessBlock(shortBuf, 0, correctBuf, 0);
Fail("failed short input check");
}
catch (DataLengthException)
{
// expected
}
try
{
engine.ProcessBlock(correctBuf, 0, shortBuf, 0);
Fail("failed short output check");
}
catch (DataLengthException)
{
// expected
}
}
}
}
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