Examples with EciesAeadHkdfParams com.google.crypto.tink.proto.EciesAeadHkdfParams used on opensource projects

Example 1 with EciesAeadHkdfParams

use of com.google.crypto.tink.proto.EciesAeadHkdfParams in project tink by google.

the class EciesAeadHkdfPrivateKeyManagerTest method testNewKey.

@Test
public void testNewKey() throws Exception {
    EllipticCurveType curve = EllipticCurveType.NIST_P384;
    HashType hashType = HashType.SHA256;
    EcPointFormat pointFormat = EcPointFormat.UNCOMPRESSED;
    KeyTemplate demKeyTemplate = AeadKeyTemplates.AES128_CTR_HMAC_SHA256;
    byte[] salt = "some salt".getBytes("UTF-8");
    EciesAeadHkdfParams params = HybridKeyTemplates.createEciesAeadHkdfParams(curve, hashType, pointFormat, demKeyTemplate, salt);
    EciesAeadHkdfPrivateKeyManager manager = new EciesAeadHkdfPrivateKeyManager();
    EciesAeadHkdfPrivateKey keyProto = (EciesAeadHkdfPrivateKey) manager.newKey(EciesAeadHkdfKeyFormat.newBuilder().setParams(params).build());
    assertEquals(params, keyProto.getPublicKey().getParams());
    Key primaryPriv = TestUtil.createKey(TestUtil.createKeyData(keyProto, EciesAeadHkdfPrivateKeyManager.TYPE_URL, KeyData.KeyMaterialType.ASYMMETRIC_PRIVATE), 8, KeyStatusType.ENABLED, OutputPrefixType.RAW);
    Key primaryPub = TestUtil.createKey(TestUtil.createKeyData(keyProto.getPublicKey(), EciesAeadHkdfPublicKeyManager.TYPE_URL, KeyData.KeyMaterialType.ASYMMETRIC_PUBLIC), 42, KeyStatusType.ENABLED, OutputPrefixType.RAW);
    KeysetHandle keysetHandlePub = TestUtil.createKeysetHandle(TestUtil.createKeyset(primaryPub));
    KeysetHandle keysetHandlePriv = TestUtil.createKeysetHandle(TestUtil.createKeyset(primaryPriv));
    HybridEncrypt hybridEncrypt = HybridEncryptFactory.getPrimitive(keysetHandlePub);
    HybridDecrypt hybridDecrypt = HybridDecryptFactory.getPrimitive(keysetHandlePriv);
    byte[] plaintext = Random.randBytes(20);
    byte[] contextInfo = Random.randBytes(20);
    byte[] ciphertext = hybridEncrypt.encrypt(plaintext, contextInfo);
    assertArrayEquals(plaintext, hybridDecrypt.decrypt(ciphertext, contextInfo));
}

Example 2 with EciesAeadHkdfParams

use of com.google.crypto.tink.proto.EciesAeadHkdfParams in project tink by google.

the class TestUtil method createEciesAeadHkdfPubKey.

/**
 * @return a {@code EciesAeadHkdfPublicKey} with the specified key material and parameters.
 */
public static EciesAeadHkdfPublicKey createEciesAeadHkdfPubKey(EllipticCurveType curve, HashType hashType, EcPointFormat ecPointFormat, KeyTemplate demKeyTemplate, byte[] pubX, byte[] pubY, byte[] salt) throws Exception {
    final int version = 0;
    EciesAeadHkdfParams params = HybridKeyTemplates.createEciesAeadHkdfParams(curve, hashType, ecPointFormat, demKeyTemplate, salt);
    return EciesAeadHkdfPublicKey.newBuilder().setVersion(version).setParams(params).setX(ByteString.copyFrom(pubX)).setY(ByteString.copyFrom(pubY)).build();
}

Example 3 with EciesAeadHkdfParams

use of com.google.crypto.tink.proto.EciesAeadHkdfParams in project tink by google.

the class EciesAeadHkdfPrivateKeyManagerTest method createPrimitive.

@Test
public void createPrimitive() throws Exception {
    EciesAeadHkdfPrivateKey key = createValidKey();
    HybridDecrypt hybridDecrypt = manager.getPrimitive(key, HybridDecrypt.class);
    EciesAeadHkdfParams eciesParams = key.getPublicKey().getParams();
    EciesHkdfKemParams kemParams = eciesParams.getKemParams();
    ECPublicKey recipientPublicKey = EllipticCurves.getEcPublicKey(HybridUtil.toCurveType(kemParams.getCurveType()), key.getPublicKey().getX().toByteArray(), key.getPublicKey().getY().toByteArray());
    EciesAeadHkdfDemHelper demHelper = new RegistryEciesAeadHkdfDemHelper(eciesParams.getDemParams().getAeadDem());
    HybridEncrypt hybridEncrypt = new EciesAeadHkdfHybridEncrypt(recipientPublicKey, kemParams.getHkdfSalt().toByteArray(), HybridUtil.toHmacAlgo(kemParams.getHkdfHashType()), HybridUtil.toPointFormatType(eciesParams.getEcPointFormat()), demHelper);
    byte[] message = Random.randBytes(20);
    byte[] contextInfo = Random.randBytes(20);
    assertThat(hybridDecrypt.decrypt(hybridEncrypt.encrypt(message, contextInfo), contextInfo)).isEqualTo(message);
}

Example 4 with EciesAeadHkdfParams

use of com.google.crypto.tink.proto.EciesAeadHkdfParams in project tink by google.

the class TestUtil method createEciesAeadHkdfPubKey.

/**
 * @return a {@code EciesAeadHkdfPublicKey} with the specified key material and parameters.
 */
public static EciesAeadHkdfPublicKey createEciesAeadHkdfPubKey(EllipticCurveType curve, HashType hashType, EcPointFormat ecPointFormat, KeyTemplate demKeyTemplate, byte[] pubX, byte[] pubY, byte[] salt) throws Exception {
    final int version = 0;
    EciesAeadHkdfParams params = HybridKeyTemplates.createEciesAeadHkdfParams(curve, hashType, ecPointFormat, demKeyTemplate, salt);
    return EciesAeadHkdfPublicKey.newBuilder().setVersion(version).setParams(params).setX(ByteString.copyFrom(pubX)).setY(ByteString.copyFrom(pubY)).build();
}

Example 5 with EciesAeadHkdfParams

use of com.google.crypto.tink.proto.EciesAeadHkdfParams in project tink by google.

the class EciesAeadHkdfPrivateKeyManager method getPrimitive.

/**
 * @param recipientKey {@code EciesAeadHkdfPrivateKey} proto
 */
@Override
public HybridDecrypt getPrimitive(MessageLite recipientKey) throws GeneralSecurityException {
    if (!(recipientKey instanceof EciesAeadHkdfPrivateKey)) {
        throw new GeneralSecurityException("expected EciesAeadHkdfPrivateKey proto");
    }
    EciesAeadHkdfPrivateKey recipientKeyProto = (EciesAeadHkdfPrivateKey) recipientKey;
    validate(recipientKeyProto);
    EciesAeadHkdfParams eciesParams = recipientKeyProto.getPublicKey().getParams();
    EciesHkdfKemParams kemParams = eciesParams.getKemParams();
    ECPrivateKey recipientPrivateKey = EllipticCurves.getEcPrivateKey(HybridUtil.toCurveType(kemParams.getCurveType()), recipientKeyProto.getKeyValue().toByteArray());
    EciesAeadHkdfDemHelper demHelper = new RegistryEciesAeadHkdfDemHelper(eciesParams.getDemParams().getAeadDem());
    return new EciesAeadHkdfHybridDecrypt(recipientPrivateKey, kemParams.getHkdfSalt().toByteArray(), HybridUtil.toHmacAlgo(kemParams.getHkdfHashType()), HybridUtil.toPointFormatType(eciesParams.getEcPointFormat()), demHelper);
}