private static HybridTestVector createTestVector6() throws GeneralSecurityException {
    HpkeParameters params =
        HpkeParameters.builder()
            .setVariant(HpkeParameters.Variant.NO_PREFIX)
            .setKemId(HpkeParameters.KemId.DHKEM_P256_HKDF_SHA256)
            .setKdfId(HpkeParameters.KdfId.HKDF_SHA256)
            .setAeadId(HpkeParameters.AeadId.AES_256_GCM)
            .build();
    HpkePublicKey publicKey =
        HpkePublicKey.create(params, getP256PublicPointAsBytes(), /* idRequirement= */ null);

    HpkePrivateKey privateKey = HpkePrivateKey.create(publicKey, getPrivateP256Value());

    return new HybridTestVector(
        privateKey,
        new byte[] {0x01},
        new byte[] {0x02},
        Hex.decode(
            "04b2de5915aa2bde7ad85745a632258caba46ed5be81297177dae45cdcbcf49c92431ea80763f92f6b2211"
                + "5723a7d092994d40376f7618e9f2ef82d5c44036e29eca440814ade6c8d5d9246abddaf57403"
                + "31"));
  }
Test vectors for HPKE. Generated by hand from the implementation here.
java_src/src/main/java/com/google/crypto/tink/hybrid/internal/testing/HpkeTestUtil.java