chromium/third_party/anonymous_tokens/src/anonymous_tokens/cpp/crypto/rsa_ssa_pss_verifier.cc

// Copyright 2023 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "anonymous_tokens/cpp/crypto/rsa_ssa_pss_verifier.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/str_cat.h"
#include "absl/strings/string_view.h"
#include "anonymous_tokens/cpp/crypto/anonymous_tokens_pb_openssl_converters.h"
#include "anonymous_tokens/cpp/crypto/constants.h"
#include "anonymous_tokens/cpp/crypto/crypto_utils.h"
#include "anonymous_tokens/cpp/shared/status_utils.h"
#include "anonymous_tokens/proto/anonymous_tokens.pb.h"
#include <openssl/bn.h>
#include <openssl/rsa.h>

namespace anonymous_tokens {

absl::StatusOr<std::unique_ptr<RsaSsaPssVerifier>> RsaSsaPssVerifier::New(
    const int salt_length, const EVP_MD* sig_hash, const EVP_MD* mgf1_hash,
    const RSAPublicKey& public_key, const bool use_rsa_public_exponent,
    std::optional<absl::string_view> public_metadata) { … }

RsaSsaPssVerifier::RsaSsaPssVerifier(
    int salt_length, std::optional<absl::string_view> public_metadata,
    const EVP_MD* sig_hash, const EVP_MD* mgf1_hash,
    bssl::UniquePtr<RSA> rsa_public_key)
    : … { … }

absl::Status RsaSsaPssVerifier::Verify(absl::string_view unblind_token,
                                       absl::string_view message) { … }

}  // namespace anonymous_tokens