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

Example 1 with EdDSAPrivateKeySpec

use of net.i2p.crypto.eddsa.spec.EdDSAPrivateKeySpec 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 EdDSAPrivateKeySpec

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

the class EdDSAEngineTest method testSign.

@Test
public void testSign() throws Exception {
    // Signature sgr = Signature.getInstance("EdDSA", "I2P");
    Signature sgr = new EdDSAEngine(MessageDigest.getInstance("SHA-512"));
    EdDSAParameterSpec spec = EdDSANamedCurveTable.getByName("ed25519-sha-512");
    for (Ed25519TestVectors.TestTuple testCase : Ed25519TestVectors.testCases) {
        EdDSAPrivateKeySpec privKey = new EdDSAPrivateKeySpec(testCase.seed, spec);
        PrivateKey sKey = new EdDSAPrivateKey(privKey);
        sgr.initSign(sKey);
        sgr.update(testCase.message);
        assertThat("Test case " + testCase.caseNum + " failed", sgr.sign(), is(equalTo(testCase.sig)));
    }
}

Example 3 with EdDSAPrivateKeySpec

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

the class EdDSAEngineTest method testSignOneShot.

@Test
public void testSignOneShot() throws Exception {
    EdDSAEngine sgr = new EdDSAEngine(MessageDigest.getInstance("SHA-512"));
    EdDSAParameterSpec spec = EdDSANamedCurveTable.getByName("ed25519-sha-512");
    EdDSAPrivateKeySpec privKey = new EdDSAPrivateKeySpec(TEST_SEED, spec);
    PrivateKey sKey = new EdDSAPrivateKey(privKey);
    sgr.initSign(sKey);
    assertThat("signOneShot() failed", sgr.signOneShot(TEST_MSG), is(equalTo(TEST_MSG_SIG)));
}

Example 4 with EdDSAPrivateKeySpec

use of net.i2p.crypto.eddsa.spec.EdDSAPrivateKeySpec 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));
}

Example 5 with EdDSAPrivateKeySpec

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

the class EdDSAEngineTest method testSignResetsForReuse.

@Test
public void testSignResetsForReuse() throws Exception {
    Signature sgr = new EdDSAEngine(MessageDigest.getInstance("SHA-512"));
    EdDSAParameterSpec spec = EdDSANamedCurveTable.getByName("ed25519-sha-512");
    EdDSAPrivateKeySpec privKey = new EdDSAPrivateKeySpec(TEST_SEED, spec);
    PrivateKey sKey = new EdDSAPrivateKey(privKey);
    sgr.initSign(sKey);
    // First usage
    sgr.update(new byte[] { 0 });
    sgr.sign();
    // Second usage
    sgr.update(TEST_MSG);
    assertThat("Second sign failed", sgr.sign(), is(equalTo(TEST_MSG_SIG)));
}