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package com.trilead.ssh2.crypto;
import org.junit.Test;
import java.io.IOException;
import java.math.BigInteger;
import static org.junit.Assert.*;
import static org.hamcrest.CoreMatchers.*;
/**
* Created by kenny on 12/25/15.
*/
public class SimpleDERReaderTest {
@Test
public void readLength_Extended_OverlyLongLength() throws Exception {
byte[] vector = new byte[] {
(byte) 0x85, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF
};
SimpleDERReader reader = new SimpleDERReader(vector);
assertEquals(-1, reader.readLength());
}
@Test
public void readLength_Extended_TooLongForInt() throws Exception {
byte[] vector = new byte[] {
(byte) 0x84, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF
};
SimpleDERReader reader = new SimpleDERReader(vector);
assertEquals(-1, reader.readLength());
}
@Test
public void readLength_Extended_Zero() throws Exception {
byte[] vector = new byte[] {
(byte) 0x80, (byte) 0x01
};
SimpleDERReader reader = new SimpleDERReader(vector);
assertEquals(-1, reader.readLength());
}
@Test
public void readLength_Extended_Valid() throws Exception {
byte[] vector = new byte[] {
(byte) 0x82, (byte) 0x05, (byte) 0xFF
};
SimpleDERReader reader = new SimpleDERReader(vector);
assertEquals(0x5FF, reader.readLength());
}
@Test
public void readLength_Short_Zero() throws Exception {
byte[] vector = new byte[] {
(byte) 0x00
};
SimpleDERReader reader = new SimpleDERReader(vector);
assertEquals(0, reader.readLength());
}
@Test
public void readLength_Short_Regular() throws Exception {
byte[] vector = new byte[] {
(byte) 0x09
};
SimpleDERReader reader = new SimpleDERReader(vector);
assertEquals(9, reader.readLength());
}
@Test
public void readInt_MaxInt() throws Exception {
byte[] vector = new byte[] {
(byte) 0x02, (byte) 0x04, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF,
};
SimpleDERReader reader = new SimpleDERReader(vector);
assertEquals(BigInteger.valueOf(0xFFFFFFFF), reader.readInt());
}
@Test
public void readInt_NotReallyInteger() throws Exception {
byte[] vector = new byte[] {
(byte) 0x01, (byte) 0x04, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF,
};
SimpleDERReader reader = new SimpleDERReader(vector);
try {
reader.readInt();
} catch (IOException expected) {
assertThat(expected.getMessage(), containsString("Expected DER Integer"));
}
}
@Test
public void readInt_InvalidLength() throws Exception {
byte[] vector = new byte[] {
(byte) 0x02, (byte) 0x80, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF,
};
SimpleDERReader reader = new SimpleDERReader(vector);
try {
reader.readInt();
} catch (IOException expected) {
assertThat(expected.getMessage(), containsString("Illegal len"));
}
}
@Test
public void readInt_ShortArray() throws Exception {
byte[] vector = new byte[] {
(byte) 0x02, (byte) 0x02, (byte) 0xFF
};
SimpleDERReader reader = new SimpleDERReader(vector);
try {
reader.readInt();
} catch (IOException expected) {
}
}
@Test
public void readOid_InvalidLength() throws Exception {
byte[] vector = new byte[]{
(byte) 0x02, (byte) 0x80, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF,
};
SimpleDERReader reader = new SimpleDERReader(vector);
try {
reader.readOid();
} catch (IOException expected) {
}
}
@Test
public void readOid_TooShort() throws Exception {
byte[] vector = new byte[]{
(byte) 0x02, (byte) 0x00
};
SimpleDERReader reader = new SimpleDERReader(vector);
try {
reader.readOid();
} catch (IOException expected) {
}
}
@Test
public void readOid_NotOidValue() throws Exception {
byte[] vector = new byte[]{
(byte) 0x02, (byte) 0x04, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF,
};
SimpleDERReader reader = new SimpleDERReader(vector);
try {
reader.readOid();
} catch (IOException expected) {
}
}
@Test
public void readOid_Valid1() throws Exception {
byte[] vector = new byte[]{
(byte) 0x06, (byte) 0x01, (byte) 0x28
};
SimpleDERReader reader = new SimpleDERReader(vector);
assertEquals("1.0", reader.readOid());
}
@Test
public void readOid_Valid1Prefix() throws Exception {
byte[] vector = new byte[]{
(byte) 0x06, (byte) 0x09, (byte) 0x2a, (byte) 0x86, (byte) 0x48, (byte) 0x86, (byte) 0xf7, (byte) 0x0d, (byte) 0x01, (byte) 0x01, (byte) 0x0b
};
SimpleDERReader reader = new SimpleDERReader(vector);
assertEquals("1.2.840.113549.1.1.11", reader.readOid());
}
@Test
public void readOid_Valid0Prefix() throws Exception {
byte[] vector = new byte[]{
(byte) 0x06, (byte) 0x0A, (byte) 0x09, (byte) 0x92, (byte) 0x26, (byte) 0x89, (byte) 0x93, (byte) 0xF2, (byte) 0x2C, (byte) 0x64, (byte) 0x04, (byte) 0x0D
};
SimpleDERReader reader = new SimpleDERReader(vector);
assertEquals("0.9.2342.19200300.100.4.13", reader.readOid());
}
@Test
public void readOid_Valid2Prefix() throws Exception {
byte[] vector = new byte[]{
(byte) 0x06, (byte) 0x03, (byte) 0x55, (byte) 0x1D, (byte) 0x0E
};
SimpleDERReader reader = new SimpleDERReader(vector);
assertEquals("2.5.29.14", reader.readOid());
}
}
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