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

Example 1 with EciesAeadHkdfKeyFormat

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

the class EciesAeadHkdfPrivateKeyManager method newKey.

/**
 * @param keyFormat {@code EciesAeadHkdfKeyFormat} proto
 * @return new {@code EciesAeadHkdfPrivateKey} proto
 */
@Override
public MessageLite newKey(MessageLite keyFormat) throws GeneralSecurityException {
    if (!(keyFormat instanceof EciesAeadHkdfKeyFormat)) {
        throw new GeneralSecurityException("expected EciesAeadHkdfKeyFormat proto");
    }
    EciesAeadHkdfKeyFormat eciesKeyFormat = (EciesAeadHkdfKeyFormat) keyFormat;
    HybridUtil.validate(eciesKeyFormat.getParams());
    EciesHkdfKemParams kemParams = eciesKeyFormat.getParams().getKemParams();
    KeyPair keyPair = EllipticCurves.generateKeyPair(HybridUtil.toCurveType(kemParams.getCurveType()));
    ECPublicKey pubKey = (ECPublicKey) keyPair.getPublic();
    ECPrivateKey privKey = (ECPrivateKey) keyPair.getPrivate();
    ECPoint w = pubKey.getW();
    // Creates EciesAeadHkdfPublicKey.
    EciesAeadHkdfPublicKey eciesPublicKey = EciesAeadHkdfPublicKey.newBuilder().setVersion(VERSION).setParams(eciesKeyFormat.getParams()).setX(ByteString.copyFrom(w.getAffineX().toByteArray())).setY(ByteString.copyFrom(w.getAffineY().toByteArray())).build();
    // Creates EciesAeadHkdfPrivateKey.
    return EciesAeadHkdfPrivateKey.newBuilder().setVersion(VERSION).setPublicKey(eciesPublicKey).setKeyValue(ByteString.copyFrom(privKey.getS().toByteArray())).build();
}

Example 2 with EciesAeadHkdfKeyFormat

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

the class HybridKeyTemplatesTest method testECIES_P256_HKDF_HMAC_SHA256_AES128_GCM.

@Test
public void testECIES_P256_HKDF_HMAC_SHA256_AES128_GCM() throws Exception {
    KeyTemplate template = HybridKeyTemplates.ECIES_P256_HKDF_HMAC_SHA256_AES128_GCM;
    assertEquals(EciesAeadHkdfPrivateKeyManager.TYPE_URL, template.getTypeUrl());
    assertEquals(OutputPrefixType.TINK, template.getOutputPrefixType());
    EciesAeadHkdfKeyFormat format = EciesAeadHkdfKeyFormat.parseFrom(template.getValue());
    assertTrue(format.hasParams());
    assertTrue(format.getParams().hasKemParams());
    assertTrue(format.getParams().hasDemParams());
    assertTrue(format.getParams().getDemParams().hasAeadDem());
    assertEquals(EcPointFormat.UNCOMPRESSED, format.getParams().getEcPointFormat());
    EciesHkdfKemParams kemParams = format.getParams().getKemParams();
    assertEquals(EllipticCurveType.NIST_P256, kemParams.getCurveType());
    assertEquals(HashType.SHA256, kemParams.getHkdfHashType());
    assertTrue(kemParams.getHkdfSalt().isEmpty());
    assertEquals(AeadKeyTemplates.AES128_GCM.toString(), format.getParams().getDemParams().getAeadDem().toString());
}

Example 3 with EciesAeadHkdfKeyFormat

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

the class HybridKeyTemplatesTest method testECIES_P256_HKDF_HMAC_SHA256_AES128_CTR_HMAC_SHA256.

@Test
public void testECIES_P256_HKDF_HMAC_SHA256_AES128_CTR_HMAC_SHA256() throws Exception {
    KeyTemplate template = HybridKeyTemplates.ECIES_P256_HKDF_HMAC_SHA256_AES128_CTR_HMAC_SHA256;
    assertEquals(EciesAeadHkdfPrivateKeyManager.TYPE_URL, template.getTypeUrl());
    assertEquals(OutputPrefixType.TINK, template.getOutputPrefixType());
    EciesAeadHkdfKeyFormat format = EciesAeadHkdfKeyFormat.parseFrom(template.getValue());
    assertTrue(format.hasParams());
    assertTrue(format.getParams().hasKemParams());
    assertTrue(format.getParams().hasDemParams());
    assertTrue(format.getParams().getDemParams().hasAeadDem());
    assertEquals(EcPointFormat.UNCOMPRESSED, format.getParams().getEcPointFormat());
    EciesHkdfKemParams kemParams = format.getParams().getKemParams();
    assertEquals(EllipticCurveType.NIST_P256, kemParams.getCurveType());
    assertEquals(HashType.SHA256, kemParams.getHkdfHashType());
    assertTrue(kemParams.getHkdfSalt().isEmpty());
    assertEquals(AeadKeyTemplates.AES128_CTR_HMAC_SHA256.toString(), format.getParams().getDemParams().getAeadDem().toString());
}

Example 4 with EciesAeadHkdfKeyFormat

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

the class HybridKeyTemplatesTest method testCreateEciesAeadHkdfKeyTemplate.

@Test
public void testCreateEciesAeadHkdfKeyTemplate() throws Exception {
    // Intentionally using "weird" or invalid values for parameters,
    // to test that the function correctly puts them in the resulting template.
    EllipticCurveType curveType = EllipticCurveType.NIST_P384;
    HashType hashType = HashType.SHA512;
    EcPointFormat ecPointFormat = EcPointFormat.COMPRESSED;
    KeyTemplate demKeyTemplate = AeadKeyTemplates.AES256_EAX;
    String salt = "some salt";
    KeyTemplate template = HybridKeyTemplates.createEciesAeadHkdfKeyTemplate(curveType, hashType, ecPointFormat, demKeyTemplate, salt.getBytes(UTF_8));
    assertEquals(EciesAeadHkdfPrivateKeyManager.TYPE_URL, template.getTypeUrl());
    assertEquals(OutputPrefixType.TINK, template.getOutputPrefixType());
    EciesAeadHkdfKeyFormat format = EciesAeadHkdfKeyFormat.parseFrom(template.getValue());
    assertTrue(format.hasParams());
    assertTrue(format.getParams().hasKemParams());
    assertTrue(format.getParams().hasDemParams());
    assertTrue(format.getParams().getDemParams().hasAeadDem());
    assertEquals(ecPointFormat, format.getParams().getEcPointFormat());
    EciesHkdfKemParams kemParams = format.getParams().getKemParams();
    assertEquals(curveType, kemParams.getCurveType());
    assertEquals(hashType, kemParams.getHkdfHashType());
    assertEquals(salt, kemParams.getHkdfSalt().toStringUtf8());
    assertEquals(AeadKeyTemplates.AES256_EAX.toString(), format.getParams().getDemParams().getAeadDem().toString());
}