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ECIES encryption for feedback and crash reports.

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This commit is contained in:
akwizgran
2016-02-23 20:19:03 +00:00
committed by str4d
parent 94cca59249
commit 28086cd359
4 changed files with 322 additions and 0 deletions
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47
briar-tests/src/org/briarproject/crypto/AsciiArmourTest.java Normal file
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package org.briarproject.crypto;
import org.briarproject.BriarTestCase;
import org.junit.Test;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
public class AsciiArmourTest extends BriarTestCase {
@Test
public void testWrapOnSingleLine() {
byte[] b = new byte[8];
for (int i = 0; i < b.length; i++) b[i] = (byte) i;
String expected = "0001020304050607\r\n";
assertEquals(expected, AsciiArmour.wrap(b, 70));
}
@Test
public void testWrapOnMultipleLines() {
byte[] b = new byte[8];
for (int i = 0; i < b.length; i++) b[i] = (byte) i;
String expected = "0001020\r\n3040506\r\n07\r\n";
assertEquals(expected, AsciiArmour.wrap(b, 7));
}
@Test
public void testUnwrapOnSingleLine() throws Exception {
String s = "0001020304050607";
byte[] expected = new byte[] {0, 1, 2, 3, 4, 5, 6, 7};
assertArrayEquals(expected, AsciiArmour.unwrap(s));
}
@Test
public void testUnwrapOnMultipleLines() throws Exception {
String s = "0001020\r\n3040506\r\n07";
byte[] expected = new byte[] {0, 1, 2, 3, 4, 5, 6, 7};
assertArrayEquals(expected, AsciiArmour.unwrap(s));
}
@Test
public void testUnwrapWithJunkCharacters() throws Exception {
String s = "0001??020\rzz\n30z40..506\r\n07;;";
byte[] expected = new byte[] {0, 1, 2, 3, 4, 5, 6, 7};
assertArrayEquals(expected, AsciiArmour.unwrap(s));
}
}

41
briar-tests/src/org/briarproject/crypto/MessageEncrypterTest.java Normal file
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package org.briarproject.crypto;
import org.briarproject.BriarTestCase;
import org.junit.Test;
import org.spongycastle.crypto.AsymmetricCipherKeyPair;
import org.spongycastle.crypto.CryptoException;
import org.spongycastle.crypto.params.ECPrivateKeyParameters;
import org.spongycastle.crypto.params.ECPublicKeyParameters;
import java.security.SecureRandom;
import static org.junit.Assert.assertArrayEquals;
public class MessageEncrypterTest extends BriarTestCase {
private final SecureRandom random = new SecureRandom();
@Test
public void testEncryptionAndDecryption() throws Exception {
MessageEncrypter m = new MessageEncrypter(random);
AsymmetricCipherKeyPair kp = m.generateKeyPair();
ECPublicKeyParameters pub = (ECPublicKeyParameters) kp.getPublic();
ECPrivateKeyParameters priv = (ECPrivateKeyParameters) kp.getPrivate();
byte[] plaintext = new byte[123];
random.nextBytes(plaintext);
byte[] ciphertext = m.encrypt(pub, plaintext);
byte[] decrypted = m.decrypt(priv, ciphertext);
assertArrayEquals(plaintext, decrypted);
}
@Test(expected = CryptoException.class)
public void testDecryptionFailsWithAlteredCiphertext() throws Exception {
MessageEncrypter m = new MessageEncrypter(random);
AsymmetricCipherKeyPair kp = m.generateKeyPair();
ECPublicKeyParameters pub = (ECPublicKeyParameters) kp.getPublic();
ECPrivateKeyParameters priv = (ECPrivateKeyParameters) kp.getPrivate();
byte[] ciphertext = m.encrypt(pub, new byte[123]);
ciphertext[random.nextInt(ciphertext.length)] ^= 0xFF;
m.decrypt(priv, ciphertext);
}
}