Kaladaran/briar
0
0
Fork 0
mirror of https://code.briarproject.org/briar/briar.git synced 2026-02-13 19:29:06 +01:00
Code Issues Projects Releases Wiki Activity

Converted incoming encryption layer from frames to segments.

Browse Source
This commit is contained in:
akwizgran
2012-01-17 16:45:25 +00:00
parent 8c0020873c
commit f6ed6dd60b
23 changed files with 285 additions and 180 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
test/net/sf/briar/transport/ConnectionReaderImplTest.java
View File

@@ -33,7 +33,9 @@ public class ConnectionReaderImplTest extends TransportTest {
// Read the frame
ByteArrayInputStream in = new ByteArrayInputStream(frame);
IncomingEncryptionLayer decrypter = new NullIncomingEncryptionLayer(in);
ConnectionReader r = new ConnectionReaderImpl(decrypter, mac, macKey);
IncomingErrorCorrectionLayer correcter =
new NullIncomingErrorCorrectionLayer(decrypter);
ConnectionReader r = new ConnectionReaderImpl(correcter, mac, macKey);
// There should be no bytes available before EOF
assertEquals(-1, r.getInputStream().read());
}
@@ -51,7 +53,9 @@ public class ConnectionReaderImplTest extends TransportTest {
// Read the frame
ByteArrayInputStream in = new ByteArrayInputStream(frame);
IncomingEncryptionLayer decrypter = new NullIncomingEncryptionLayer(in);
ConnectionReader r = new ConnectionReaderImpl(decrypter, mac, macKey);
IncomingErrorCorrectionLayer correcter =
new NullIncomingErrorCorrectionLayer(decrypter);
ConnectionReader r = new ConnectionReaderImpl(correcter, mac, macKey);
// There should be one byte available before EOF
assertEquals(0, r.getInputStream().read());
assertEquals(-1, r.getInputStream().read());
@@ -77,7 +81,9 @@ public class ConnectionReaderImplTest extends TransportTest {
// Read the first frame
ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
IncomingEncryptionLayer decrypter = new NullIncomingEncryptionLayer(in);
ConnectionReader r = new ConnectionReaderImpl(decrypter, mac, macKey);
IncomingErrorCorrectionLayer correcter =
new NullIncomingErrorCorrectionLayer(decrypter);
ConnectionReader r = new ConnectionReaderImpl(correcter, mac, macKey);
byte[] read = new byte[MAX_PAYLOAD_LENGTH];
TestUtils.readFully(r.getInputStream(), read);
// Try to read the second frame
@@ -111,7 +117,9 @@ public class ConnectionReaderImplTest extends TransportTest {
// Read the first frame
ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
IncomingEncryptionLayer decrypter = new NullIncomingEncryptionLayer(in);
ConnectionReader r = new ConnectionReaderImpl(decrypter, mac, macKey);
IncomingErrorCorrectionLayer correcter =
new NullIncomingErrorCorrectionLayer(decrypter);
ConnectionReader r = new ConnectionReaderImpl(correcter, mac, macKey);
byte[] read = new byte[MAX_PAYLOAD_LENGTH - paddingLength];
TestUtils.readFully(r.getInputStream(), read);
// Try to read the second frame
@@ -137,7 +145,9 @@ public class ConnectionReaderImplTest extends TransportTest {
// Read the frame
ByteArrayInputStream in = new ByteArrayInputStream(frame);
IncomingEncryptionLayer decrypter = new NullIncomingEncryptionLayer(in);
ConnectionReader r = new ConnectionReaderImpl(decrypter, mac, macKey);
IncomingErrorCorrectionLayer correcter =
new NullIncomingErrorCorrectionLayer(decrypter);
ConnectionReader r = new ConnectionReaderImpl(correcter, mac, macKey);
// The non-zero padding should be rejected
try {
r.getInputStream().read();
@@ -169,7 +179,9 @@ public class ConnectionReaderImplTest extends TransportTest {
// Read the frames
ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
IncomingEncryptionLayer decrypter = new NullIncomingEncryptionLayer(in);
ConnectionReader r = new ConnectionReaderImpl(decrypter, mac, macKey);
IncomingErrorCorrectionLayer correcter =
new NullIncomingErrorCorrectionLayer(decrypter);
ConnectionReader r = new ConnectionReaderImpl(correcter, mac, macKey);
byte[] read = new byte[payloadLength];
TestUtils.readFully(r.getInputStream(), read);
assertArrayEquals(new byte[payloadLength], read);
@@ -193,7 +205,9 @@ public class ConnectionReaderImplTest extends TransportTest {
// Try to read the frame - not a single byte should be read
ByteArrayInputStream in = new ByteArrayInputStream(frame);
IncomingEncryptionLayer decrypter = new NullIncomingEncryptionLayer(in);
ConnectionReader r = new ConnectionReaderImpl(decrypter, mac, macKey);
IncomingErrorCorrectionLayer correcter =
new NullIncomingErrorCorrectionLayer(decrypter);
ConnectionReader r = new ConnectionReaderImpl(correcter, mac, macKey);
try {
r.getInputStream().read();
fail();
@@ -215,7 +229,9 @@ public class ConnectionReaderImplTest extends TransportTest {
// Try to read the frame - not a single byte should be read
ByteArrayInputStream in = new ByteArrayInputStream(frame);
IncomingEncryptionLayer decrypter = new NullIncomingEncryptionLayer(in);
ConnectionReader r = new ConnectionReaderImpl(decrypter, mac, macKey);
IncomingErrorCorrectionLayer correcter =
new NullIncomingErrorCorrectionLayer(decrypter);
ConnectionReader r = new ConnectionReaderImpl(correcter, mac, macKey);
try {
r.getInputStream().read();
fail();

2
test/net/sf/briar/transport/ConnectionRecogniserImplTest.java
View File

@@ -618,7 +618,7 @@ public class ConnectionRecogniserImplTest extends BriarTestCase {
ErasableKey tagKey = crypto.deriveTagKey(secret, true);
Cipher tagCipher = crypto.getTagCipher();
byte[] tag = new byte[TAG_LENGTH];
TagEncoder.encodeTag(tag, 0, tagCipher, tagKey);
TagEncoder.encodeTag(tag, 0L, tagCipher, tagKey);
return tag;
}
}

8
test/net/sf/briar/transport/FrameReadWriteTest.java
View File

@@ -62,7 +62,7 @@ public class FrameReadWriteTest extends BriarTestCase {
private void testWriteAndRead(boolean initiator) throws Exception {
// Encode the tag
byte[] tag = new byte[TAG_LENGTH];
TagEncoder.encodeTag(tag, 0, tagCipher, tagKey);
TagEncoder.encodeTag(tag, 0L, tagCipher, tagKey);
// Generate two random frames
byte[] frame = new byte[12345];
random.nextBytes(frame);
@@ -89,11 +89,13 @@ public class FrameReadWriteTest extends BriarTestCase {
byte[] recoveredTag = new byte[TAG_LENGTH];
assertEquals(TAG_LENGTH, in.read(recoveredTag));
assertArrayEquals(tag, recoveredTag);
assertTrue(TagEncoder.validateTag(tag, 0, tagCipher, tagKey));
assertEquals(0L, TagEncoder.decodeTag(tag, tagCipher, tagKey));
// Read the frames back
IncomingEncryptionLayer decrypter = new IncomingEncryptionLayerImpl(in,
tagCipher, frameCipher, tagKey, frameKey, false);
ConnectionReader reader = new ConnectionReaderImpl(decrypter, mac,
IncomingErrorCorrectionLayer correcter =
new NullIncomingErrorCorrectionLayer(decrypter);
ConnectionReader reader = new ConnectionReaderImpl(correcter, mac,
macKey);
InputStream in1 = reader.getInputStream();
byte[] recovered = new byte[frame.length];

36
test/net/sf/briar/transport/IncomingEncryptionLayerImplTest.java
View File

@@ -2,7 +2,6 @@ package net.sf.briar.transport;
import static net.sf.briar.api.transport.TransportConstants.FRAME_HEADER_LENGTH;
import static net.sf.briar.api.transport.TransportConstants.MAC_LENGTH;
import static net.sf.briar.api.transport.TransportConstants.MAX_FRAME_LENGTH;
import static net.sf.briar.api.transport.TransportConstants.TAG_LENGTH;
import java.io.ByteArrayInputStream;
@@ -13,6 +12,7 @@ import javax.crypto.spec.IvParameterSpec;
import net.sf.briar.BriarTestCase;
import net.sf.briar.api.crypto.CryptoComponent;
import net.sf.briar.api.crypto.ErasableKey;
import net.sf.briar.api.plugins.Segment;
import net.sf.briar.crypto.CryptoModule;
import org.apache.commons.io.output.ByteArrayOutputStream;
@@ -38,14 +38,14 @@ public class IncomingEncryptionLayerImplTest extends BriarTestCase {
@Test
public void testDecryptionWithFirstSegmentTagged() throws Exception {
// Calculate the ciphertext for the first frame
// Calculate the ciphertext for the first segment
byte[] plaintext = new byte[FRAME_HEADER_LENGTH + 123 + MAC_LENGTH];
HeaderEncoder.encodeHeader(plaintext, 0L, 123, 0);
byte[] iv = IvEncoder.encodeIv(0L, frameCipher.getBlockSize());
IvParameterSpec ivSpec = new IvParameterSpec(iv);
frameCipher.init(Cipher.ENCRYPT_MODE, frameKey, ivSpec);
byte[] ciphertext = frameCipher.doFinal(plaintext, 0, plaintext.length);
// Calculate the ciphertext for the second frame
// Calculate the ciphertext for the second segment
byte[] plaintext1 = new byte[FRAME_HEADER_LENGTH + 1234 + MAC_LENGTH];
HeaderEncoder.encodeHeader(plaintext1, 1L, 1234, 0);
IvEncoder.updateIv(iv, 1L);
@@ -62,13 +62,19 @@ public class IncomingEncryptionLayerImplTest extends BriarTestCase {
IncomingEncryptionLayer decrypter = new IncomingEncryptionLayerImpl(in,
tagCipher, frameCipher, tagKey, frameKey, false);
// First frame
byte[] decrypted = new byte[MAX_FRAME_LENGTH];
assertEquals(plaintext.length, decrypter.readFrame(decrypted));
Segment s = new SegmentImpl();
assertTrue(decrypter.readSegment(s));
assertEquals(plaintext.length, s.getLength());
assertEquals(0L, s.getSegmentNumber());
byte[] decrypted = s.getBuffer();
for(int i = 0; i < plaintext.length; i++) {
assertEquals(plaintext[i], decrypted[i]);
}
// Second frame
assertEquals(plaintext1.length, decrypter.readFrame(decrypted));
assertTrue(decrypter.readSegment(s));
assertEquals(plaintext1.length, s.getLength());
assertEquals(1L, s.getSegmentNumber());
decrypted = s.getBuffer();
for(int i = 0; i < plaintext1.length; i++) {
assertEquals(plaintext1[i], decrypted[i]);
}
@@ -76,18 +82,18 @@ public class IncomingEncryptionLayerImplTest extends BriarTestCase {
@Test
public void testDecryptionWithEverySegmentTagged() throws Exception {
// Calculate the ciphertext for the first frame
// Calculate the ciphertext for the first segment
byte[] plaintext = new byte[FRAME_HEADER_LENGTH + 123 + MAC_LENGTH];
HeaderEncoder.encodeHeader(plaintext, 0L, 123, 0);
byte[] iv = IvEncoder.encodeIv(0L, frameCipher.getBlockSize());
IvParameterSpec ivSpec = new IvParameterSpec(iv);
frameCipher.init(Cipher.ENCRYPT_MODE, frameKey, ivSpec);
byte[] ciphertext = frameCipher.doFinal(plaintext, 0, plaintext.length);
// Calculate the ciphertext for the second frame, including its tag
// Calculate the ciphertext for the second segment, including its tag
byte[] plaintext1 = new byte[FRAME_HEADER_LENGTH + 1234 + MAC_LENGTH];
HeaderEncoder.encodeHeader(plaintext1, 1L, 1234, 0);
byte[] ciphertext1 = new byte[TAG_LENGTH + plaintext1.length];
TagEncoder.encodeTag(ciphertext1, 1, tagCipher, tagKey);
TagEncoder.encodeTag(ciphertext1, 1L, tagCipher, tagKey);
IvEncoder.updateIv(iv, 1L);
ivSpec = new IvParameterSpec(iv);
frameCipher.init(Cipher.ENCRYPT_MODE, frameKey, ivSpec);
@@ -102,13 +108,19 @@ public class IncomingEncryptionLayerImplTest extends BriarTestCase {
IncomingEncryptionLayer decrypter = new IncomingEncryptionLayerImpl(in,
tagCipher, frameCipher, tagKey, frameKey, true);
// First frame
byte[] decrypted = new byte[MAX_FRAME_LENGTH];
assertEquals(plaintext.length, decrypter.readFrame(decrypted));
Segment s = new SegmentImpl();
assertTrue(decrypter.readSegment(s));
assertEquals(plaintext.length, s.getLength());
assertEquals(0L, s.getSegmentNumber());
byte[] decrypted = s.getBuffer();
for(int i = 0; i < plaintext.length; i++) {
assertEquals(plaintext[i], decrypted[i]);
}
// Second frame
assertEquals(plaintext1.length, decrypter.readFrame(decrypted));
assertTrue(decrypter.readSegment(s));
assertEquals(plaintext1.length, s.getLength());
assertEquals(1L, s.getSegmentNumber());
decrypted = s.getBuffer();
for(int i = 0; i < plaintext1.length; i++) {
assertEquals(plaintext1[i], decrypted[i]);
}

31
test/net/sf/briar/transport/IncomingSegmentedEncryptionLayerTest.java
View File

@@ -2,7 +2,6 @@ package net.sf.briar.transport;
import static net.sf.briar.api.transport.TransportConstants.FRAME_HEADER_LENGTH;
import static net.sf.briar.api.transport.TransportConstants.MAC_LENGTH;
import static net.sf.briar.api.transport.TransportConstants.MAX_FRAME_LENGTH;
import static net.sf.briar.api.transport.TransportConstants.TAG_LENGTH;
import java.io.IOException;
@@ -39,14 +38,14 @@ public class IncomingSegmentedEncryptionLayerTest extends BriarTestCase {
@Test
public void testDecryptionWithFirstSegmentTagged() throws Exception {
// Calculate the ciphertext for the first frame
// Calculate the ciphertext for the first segment
byte[] plaintext = new byte[FRAME_HEADER_LENGTH + 123 + MAC_LENGTH];
HeaderEncoder.encodeHeader(plaintext, 0L, 123, 0);
byte[] iv = IvEncoder.encodeIv(0L, frameCipher.getBlockSize());
IvParameterSpec ivSpec = new IvParameterSpec(iv);
frameCipher.init(Cipher.ENCRYPT_MODE, frameKey, ivSpec);
byte[] ciphertext = frameCipher.doFinal(plaintext, 0, plaintext.length);
// Calculate the ciphertext for the second frame
// Calculate the ciphertext for the second segment
byte[] plaintext1 = new byte[FRAME_HEADER_LENGTH + 1234 + MAC_LENGTH];
HeaderEncoder.encodeHeader(plaintext1, 1L, 1234, 0);
IvEncoder.updateIv(iv, 1L);
@@ -61,13 +60,19 @@ public class IncomingSegmentedEncryptionLayerTest extends BriarTestCase {
new IncomingSegmentedEncryptionLayer(in, tagCipher, frameCipher,
tagKey, frameKey, false);
// First frame
byte[] decrypted = new byte[MAX_FRAME_LENGTH];
assertEquals(plaintext.length, decrypter.readFrame(decrypted));
Segment s = new SegmentImpl();
assertTrue(decrypter.readSegment(s));
assertEquals(plaintext.length, s.getLength());
assertEquals(0L, s.getSegmentNumber());
byte[] decrypted = s.getBuffer();
for(int i = 0; i < plaintext.length; i++) {
assertEquals(plaintext[i], decrypted[i]);
}
// Second frame
assertEquals(plaintext1.length, decrypter.readFrame(decrypted));
assertTrue(decrypter.readSegment(s));
assertEquals(plaintext1.length, s.getLength());
assertEquals(1L, s.getSegmentNumber());
decrypted = s.getBuffer();
for(int i = 0; i < plaintext1.length; i++) {
assertEquals(plaintext1[i], decrypted[i]);
}
@@ -86,7 +91,7 @@ public class IncomingSegmentedEncryptionLayerTest extends BriarTestCase {
byte[] plaintext1 = new byte[FRAME_HEADER_LENGTH + 1234 + MAC_LENGTH];
HeaderEncoder.encodeHeader(plaintext1, 1L, 1234, 0);
byte[] ciphertext1 = new byte[TAG_LENGTH + plaintext1.length];
TagEncoder.encodeTag(ciphertext1, 1, tagCipher, tagKey);
TagEncoder.encodeTag(ciphertext1, 1L, tagCipher, tagKey);
IvEncoder.updateIv(iv, 1L);
ivSpec = new IvParameterSpec(iv);
frameCipher.init(Cipher.ENCRYPT_MODE, frameKey, ivSpec);
@@ -99,13 +104,19 @@ public class IncomingSegmentedEncryptionLayerTest extends BriarTestCase {
new IncomingSegmentedEncryptionLayer(in, tagCipher, frameCipher,
tagKey, frameKey, true);
// First frame
byte[] decrypted = new byte[MAX_FRAME_LENGTH];
assertEquals(plaintext.length, decrypter.readFrame(decrypted));
Segment s = new SegmentImpl();
assertTrue(decrypter.readSegment(s));
assertEquals(plaintext.length, s.getLength());
assertEquals(0L, s.getSegmentNumber());
byte[] decrypted = s.getBuffer();
for(int i = 0; i < plaintext.length; i++) {
assertEquals(plaintext[i], decrypted[i]);
}
// Second frame
assertEquals(plaintext1.length, decrypter.readFrame(decrypted));
assertTrue(decrypter.readSegment(s));
assertEquals(plaintext1.length, s.getLength());
assertEquals(1L, s.getSegmentNumber());
decrypted = s.getBuffer();
for(int i = 0; i < plaintext1.length; i++) {
assertEquals(plaintext1[i], decrypted[i]);
}

26
test/net/sf/briar/transport/NullIncomingEncryptionLayer.java
View File

@@ -9,38 +9,44 @@ import java.io.IOException;
import java.io.InputStream;
import net.sf.briar.api.FormatException;
import net.sf.briar.api.plugins.Segment;
/** An encryption layer that performs no encryption. */
class NullIncomingEncryptionLayer implements IncomingEncryptionLayer {
private final InputStream in;
private long segmentNumber = 0L;
NullIncomingEncryptionLayer(InputStream in) {
this.in = in;
}
public int readFrame(byte[] b) throws IOException {
// Read the header to determine the frame length
public boolean readSegment(Segment s) throws IOException {
byte[] buf = s.getBuffer();
// Read the frame header
int offset = 0, length = FRAME_HEADER_LENGTH;
while(offset < length) {
int read = in.read(b, offset, length - offset);
int read = in.read(buf, offset, length - offset);
if(read == -1) {
if(offset == 0) return -1;
if(offset == 0) return false;
throw new EOFException();
}
offset += read;
}
// Parse the header
int payload = HeaderEncoder.getPayloadLength(b);
int padding = HeaderEncoder.getPaddingLength(b);
// Parse the frame header
int payload = HeaderEncoder.getPayloadLength(buf);
int padding = HeaderEncoder.getPaddingLength(buf);
length = FRAME_HEADER_LENGTH + payload + padding + MAC_LENGTH;
if(length > MAX_FRAME_LENGTH) throw new FormatException();
// Read the remainder of the frame
// Read the remainder of the frame/segment
while(offset < length) {
int read = in.read(b, offset, length - offset);
int read = in.read(buf, offset, length - offset);
if(read == -1) throw new EOFException();
offset += read;
}
return length;
s.setLength(length);
s.setSegmentNumber(segmentNumber++);
return true;
}
}

16
test/net/sf/briar/transport/OutgoingEncryptionLayerImplTest.java
View File

@@ -39,14 +39,14 @@ public class OutgoingEncryptionLayerImplTest extends BriarTestCase {
public void testEncryptionWithFirstSegmentTagged() throws Exception {
// Calculate the expected tag
byte[] tag = new byte[TAG_LENGTH];
TagEncoder.encodeTag(tag, 0, tagCipher, tagKey);
// Calculate the expected ciphertext for the first frame
TagEncoder.encodeTag(tag, 0L, tagCipher, tagKey);
// Calculate the expected ciphertext for the first segment
byte[] iv = new byte[frameCipher.getBlockSize()];
byte[] plaintext = new byte[123 + MAC_LENGTH];
IvParameterSpec ivSpec = new IvParameterSpec(iv);
frameCipher.init(Cipher.ENCRYPT_MODE, frameKey, ivSpec);
byte[] ciphertext = frameCipher.doFinal(plaintext);
// Calculate the expected ciphertext for the second frame
// Calculate the expected ciphertext for the second segment
byte[] plaintext1 = new byte[1234 + MAC_LENGTH];
IvEncoder.updateIv(iv, 1L);
ivSpec = new IvParameterSpec(iv);
@@ -76,17 +76,17 @@ public class OutgoingEncryptionLayerImplTest extends BriarTestCase {
public void testEncryptionWithEverySegmentTagged() throws Exception {
// Calculate the expected tag for the first segment
byte[] tag = new byte[TAG_LENGTH];
TagEncoder.encodeTag(tag, 0, tagCipher, tagKey);
// Calculate the expected ciphertext for the first frame
TagEncoder.encodeTag(tag, 0L, tagCipher, tagKey);
// Calculate the expected ciphertext for the first segment
byte[] iv = new byte[frameCipher.getBlockSize()];
byte[] plaintext = new byte[123 + MAC_LENGTH];
IvParameterSpec ivSpec = new IvParameterSpec(iv);
frameCipher.init(Cipher.ENCRYPT_MODE, frameKey, ivSpec);
byte[] ciphertext = frameCipher.doFinal(plaintext);
// Calculate the expected tag for the second frame
// Calculate the expected tag for the second segment
byte[] tag1 = new byte[TAG_LENGTH];
TagEncoder.encodeTag(tag1, 1, tagCipher, tagKey);
// Calculate the expected ciphertext for the second frame
TagEncoder.encodeTag(tag1, 1L, tagCipher, tagKey);
// Calculate the expected ciphertext for the second segment
byte[] plaintext1 = new byte[1234 + MAC_LENGTH];
IvEncoder.updateIv(iv, 1L);
ivSpec = new IvParameterSpec(iv);

18
test/net/sf/briar/transport/OutgoingSegmentedEncryptionLayerTest.java
View File

@@ -42,14 +42,14 @@ public class OutgoingSegmentedEncryptionLayerTest extends BriarTestCase {
public void testEncryptionWithFirstSegmentTagged() throws Exception {
// Calculate the expected tag
byte[] tag = new byte[TAG_LENGTH];
TagEncoder.encodeTag(tag, 0, tagCipher, tagKey);
// Calculate the expected ciphertext for the first frame
TagEncoder.encodeTag(tag, 0L, tagCipher, tagKey);
// Calculate the expected ciphertext for the first segment
byte[] iv = new byte[frameCipher.getBlockSize()];
byte[] plaintext = new byte[123 + MAC_LENGTH];
IvParameterSpec ivSpec = new IvParameterSpec(iv);
frameCipher.init(Cipher.ENCRYPT_MODE, frameKey, ivSpec);
byte[] ciphertext = frameCipher.doFinal(plaintext);
// Calculate the expected ciphertext for the second frame
// Calculate the expected ciphertext for the second segment
byte[] plaintext1 = new byte[1234 + MAC_LENGTH];
IvEncoder.updateIv(iv, 1L);
ivSpec = new IvParameterSpec(iv);
@@ -78,19 +78,19 @@ public class OutgoingSegmentedEncryptionLayerTest extends BriarTestCase {
@Test
public void testEncryptionWithEverySegmentTagged() throws Exception {
// Calculate the expected tag for the first frame
// Calculate the expected tag for the first segment
byte[] tag = new byte[TAG_LENGTH];
TagEncoder.encodeTag(tag, 0, tagCipher, tagKey);
// Calculate the expected ciphertext for the first frame
TagEncoder.encodeTag(tag, 0L, tagCipher, tagKey);
// Calculate the expected ciphertext for the first segment
byte[] iv = new byte[frameCipher.getBlockSize()];
byte[] plaintext = new byte[123 + MAC_LENGTH];
IvParameterSpec ivSpec = new IvParameterSpec(iv);
frameCipher.init(Cipher.ENCRYPT_MODE, frameKey, ivSpec);
byte[] ciphertext = frameCipher.doFinal(plaintext);
// Calculate the expected tag for the second frame
// Calculate the expected tag for the second segment
byte[] tag1 = new byte[TAG_LENGTH];
TagEncoder.encodeTag(tag1, 1, tagCipher, tagKey);
// Calculate the expected ciphertext for the second frame
TagEncoder.encodeTag(tag1, 1L, tagCipher, tagKey);
// Calculate the expected ciphertext for the second segment
byte[] plaintext1 = new byte[1234 + MAC_LENGTH];
IvEncoder.updateIv(iv, 1L);
ivSpec = new IvParameterSpec(iv);

4
test/net/sf/briar/transport/TransportTest.java
View File

@@ -16,8 +16,8 @@ import com.google.inject.Injector;
public abstract class TransportTest extends BriarTestCase {
static final int MAX_PAYLOAD_LENGTH
= MAX_FRAME_LENGTH - FRAME_HEADER_LENGTH - MAC_LENGTH;
static final int MAX_PAYLOAD_LENGTH =
MAX_FRAME_LENGTH - FRAME_HEADER_LENGTH - MAC_LENGTH;
protected final Mac mac;
protected final ErasableKey macKey;