chromium/net/third_party/quiche/src/quiche/oblivious_http/buffers/oblivious_http_request.cc

#include "quiche/oblivious_http/buffers/oblivious_http_request.h"

#include <stddef.h>
#include <stdint.h>

#include <memory>
#include <optional>
#include <string>
#include <utility>

#include "absl/memory/memory.h"
#include "absl/status/status.h"
#include "absl/status/statusor.h"
#include "absl/strings/str_cat.h"
#include "absl/strings/string_view.h"
#include "openssl/hpke.h"
#include "quiche/common/platform/api/quiche_bug_tracker.h"
#include "quiche/common/platform/api/quiche_logging.h"
#include "quiche/common/quiche_crypto_logging.h"

namespace quiche {
// Ctor.
ObliviousHttpRequest::Context::Context(
    bssl::UniquePtr<EVP_HPKE_CTX> hpke_context, std::string encapsulated_key)
    : … { … }

// Ctor.
ObliviousHttpRequest::ObliviousHttpRequest(
    bssl::UniquePtr<EVP_HPKE_CTX> hpke_context, std::string encapsulated_key,
    const ObliviousHttpHeaderKeyConfig& ohttp_key_config,
    std::string req_ciphertext, std::string req_plaintext)
    : … { … }

// Request Decapsulation.
absl::StatusOr<ObliviousHttpRequest>
ObliviousHttpRequest::CreateServerObliviousRequest(
    absl::string_view encrypted_data, const EVP_HPKE_KEY& gateway_key,
    const ObliviousHttpHeaderKeyConfig& ohttp_key_config,
    absl::string_view request_label) { … }

// Request Encapsulation.
absl::StatusOr<ObliviousHttpRequest>
ObliviousHttpRequest::CreateClientObliviousRequest(
    std::string plaintext_payload, absl::string_view hpke_public_key,
    const ObliviousHttpHeaderKeyConfig& ohttp_key_config,
    absl::string_view request_label) { … }

absl::StatusOr<ObliviousHttpRequest>
ObliviousHttpRequest::CreateClientWithSeedForTesting(
    std::string plaintext_payload, absl::string_view hpke_public_key,
    const ObliviousHttpHeaderKeyConfig& ohttp_key_config,
    absl::string_view seed, absl::string_view request_label) { … }

absl::StatusOr<ObliviousHttpRequest> ObliviousHttpRequest::EncapsulateWithSeed(
    std::string plaintext_payload, absl::string_view hpke_public_key,
    const ObliviousHttpHeaderKeyConfig& ohttp_key_config,
    absl::string_view seed, absl::string_view request_label) { … }

// Request Serialize.
// Builds request=[hdr, enc, ct].
// https://www.ietf.org/archive/id/draft-ietf-ohai-ohttp-03.html#section-4.1-4.5
std::string ObliviousHttpRequest::EncapsulateAndSerialize() const { … }

// Returns Decrypted blob in the case of server, and returns plaintext used by
// the client while `CreateClientObliviousRequest`.
absl::string_view ObliviousHttpRequest::GetPlaintextData() const { … }

}  // namespace quiche