blob: e788369a0ece46c6ad5cc066d4137cfeee372464 [file] [log] [blame]
#include "quiche/oblivious_http/oblivious_http_gateway.h"
#include <stdint.h>
#include <memory>
#include <string>
#include <utility>
#include "absl/memory/memory.h"
#include "absl/status/status.h"
#include "absl/status/statusor.h"
#include "absl/strings/string_view.h"
#include "quiche/common/quiche_crypto_logging.h"
#include "quiche/common/quiche_random.h"
namespace quiche {
// Constructor.
ObliviousHttpGateway::ObliviousHttpGateway(
bssl::UniquePtr<EVP_HPKE_KEY> recipient_key,
const ObliviousHttpHeaderKeyConfig& ohttp_key_config,
QuicheRandom* quiche_random)
: server_hpke_key_(std::move(recipient_key)),
ohttp_key_config_(ohttp_key_config),
quiche_random_(quiche_random) {}
// Initialize ObliviousHttpGateway(Recipient/Server) context.
absl::StatusOr<ObliviousHttpGateway> ObliviousHttpGateway::Create(
absl::string_view hpke_private_key,
const ObliviousHttpHeaderKeyConfig& ohttp_key_config,
QuicheRandom* quiche_random) {
if (hpke_private_key.empty()) {
return absl::InvalidArgumentError("Invalid/Empty HPKE private key.");
}
// Initialize HPKE key and context.
bssl::UniquePtr<EVP_HPKE_KEY> recipient_key(EVP_HPKE_KEY_new());
if (recipient_key == nullptr) {
return SslErrorAsStatus(
"Failed to initialize ObliviousHttpGateway/Server's Key.");
}
if (!EVP_HPKE_KEY_init(
recipient_key.get(), ohttp_key_config.GetHpkeKem(),
reinterpret_cast<const uint8_t*>(hpke_private_key.data()),
hpke_private_key.size())) {
return SslErrorAsStatus("Failed to import HPKE private key.");
}
if (quiche_random == nullptr) quiche_random = QuicheRandom::GetInstance();
return ObliviousHttpGateway(std::move(recipient_key), ohttp_key_config,
quiche_random);
}
absl::StatusOr<ObliviousHttpRequest>
ObliviousHttpGateway::DecryptObliviousHttpRequest(
absl::string_view encrypted_data, absl::string_view request_label) const {
return ObliviousHttpRequest::CreateServerObliviousRequest(
encrypted_data, *(server_hpke_key_), ohttp_key_config_, request_label);
}
absl::StatusOr<ObliviousHttpResponse>
ObliviousHttpGateway::CreateObliviousHttpResponse(
std::string plaintext_data,
ObliviousHttpRequest::Context& oblivious_http_request_context,
absl::string_view response_label) const {
return ObliviousHttpResponse::CreateServerObliviousResponse(
std::move(plaintext_data), oblivious_http_request_context, response_label,
quiche_random_);
}
} // namespace quiche