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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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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);
}
}