Examples with EdDSAPublicKeySpec net.i2p.crypto.eddsa.spec.EdDSAPublicKeySpec used on opensource projects

Example 1 with EdDSAPublicKeySpec

use of net.i2p.crypto.eddsa.spec.EdDSAPublicKeySpec in project mxisd by kamax-io.

the class KeyManager method build.

@PostConstruct
public void build() {
    try {
        keySpecs = EdDSANamedCurveTable.getByName(EdDSANamedCurveTable.CURVE_ED25519_SHA512);
        signEngine = new EdDSAEngine(MessageDigest.getInstance(keySpecs.getHashAlgorithm()));
        keys = new ArrayList<>();
        Path privKey = Paths.get(keyCfg.getPath());
        if (!Files.exists(privKey)) {
            KeyPair pair = (new KeyPairGenerator()).generateKeyPair();
            String keyEncoded = Base64.getEncoder().encodeToString(pair.getPrivate().getEncoded());
            FileUtils.writeStringToFile(privKey.toFile(), keyEncoded, StandardCharsets.ISO_8859_1);
            keys.add(pair);
        } else {
            if (Files.isDirectory(privKey)) {
                throw new RuntimeException("Invalid path for private key: " + privKey.toString());
            }
            if (Files.isReadable(privKey)) {
                byte[] seed = Base64.getDecoder().decode(FileUtils.readFileToString(privKey.toFile(), StandardCharsets.ISO_8859_1));
                EdDSAPrivateKeySpec privKeySpec = new EdDSAPrivateKeySpec(seed, keySpecs);
                EdDSAPublicKeySpec pubKeySpec = new EdDSAPublicKeySpec(privKeySpec.getA(), keySpecs);
                keys.add(new KeyPair(new EdDSAPublicKey(pubKeySpec), new EdDSAPrivateKey(privKeySpec)));
            }
        }
    } catch (NoSuchAlgorithmException | IOException e) {
        throw new RuntimeException(e);
    }
}

Example 2 with EdDSAPublicKeySpec

use of net.i2p.crypto.eddsa.spec.EdDSAPublicKeySpec in project i2p.i2p by i2p.

the class EdDSAEngineTest method testVerifyResetsForReuse.

@Test
public void testVerifyResetsForReuse() throws Exception {
    Signature sgr = new EdDSAEngine(MessageDigest.getInstance("SHA-512"));
    EdDSAPublicKeySpec pubKey = new EdDSAPublicKeySpec(TEST_PK, EdDSANamedCurveTable.getByName("ed25519-sha-512"));
    PublicKey vKey = new EdDSAPublicKey(pubKey);
    sgr.initVerify(vKey);
    // First usage
    sgr.update(new byte[] { 0 });
    sgr.verify(TEST_MSG_SIG);
    // Second usage
    sgr.update(TEST_MSG);
    assertThat("Second verify failed", sgr.verify(TEST_MSG_SIG), is(true));
}

Example 3 with EdDSAPublicKeySpec

use of net.i2p.crypto.eddsa.spec.EdDSAPublicKeySpec in project i2p.i2p by i2p.

the class EdDSAEngineTest method testVerifyOneShotModeMultipleUpdates.

@Test
public void testVerifyOneShotModeMultipleUpdates() throws Exception {
    Signature sgr = new EdDSAEngine(MessageDigest.getInstance("SHA-512"));
    EdDSAPublicKeySpec pubKey = new EdDSAPublicKeySpec(TEST_PK, EdDSANamedCurveTable.getByName("ed25519-sha-512"));
    PublicKey vKey = new EdDSAPublicKey(pubKey);
    sgr.initVerify(vKey);
    sgr.setParameter(EdDSAEngine.ONE_SHOT_MODE);
    sgr.update(TEST_MSG);
    exception.expect(SignatureException.class);
    exception.expectMessage("update() already called");
    sgr.update(TEST_MSG);
}

Example 4 with EdDSAPublicKeySpec

use of net.i2p.crypto.eddsa.spec.EdDSAPublicKeySpec in project i2p.i2p by i2p.

the class EdDSAEngineTest method testVerifyOneShot.

@Test
public void testVerifyOneShot() throws Exception {
    EdDSAEngine sgr = new EdDSAEngine(MessageDigest.getInstance("SHA-512"));
    EdDSAPublicKeySpec pubKey = new EdDSAPublicKeySpec(TEST_PK, EdDSANamedCurveTable.getByName("ed25519-sha-512"));
    PublicKey vKey = new EdDSAPublicKey(pubKey);
    sgr.initVerify(vKey);
    assertThat("verifyOneShot() failed", sgr.verifyOneShot(TEST_MSG, TEST_MSG_SIG), is(true));
}

Example 5 with EdDSAPublicKeySpec

use of net.i2p.crypto.eddsa.spec.EdDSAPublicKeySpec in project i2p.i2p by i2p.

the class KeyPairGenerator method generateKeyPair.

public KeyPair generateKeyPair() {
    if (!initialized)
        initialize(DEFAULT_STRENGTH, RandomSource.getInstance());
    byte[] seed = new byte[edParams.getCurve().getField().getb() / 8];
    random.nextBytes(seed);
    EdDSAPrivateKeySpec privKey = new EdDSAPrivateKeySpec(seed, edParams);
    EdDSAPublicKeySpec pubKey = new EdDSAPublicKeySpec(privKey.getA(), edParams);
    return new KeyPair(new EdDSAPublicKey(pubKey), new EdDSAPrivateKey(privKey));
}