1 // Copyright 2018 Google Inc. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 // 15 /////////////////////////////////////////////////////////////////////////////// 16 17 #ifndef TINK_SUBTLE_RSA_SSA_PKCS1_SIGN_BORINGSSL_H_ 18 #define TINK_SUBTLE_RSA_SSA_PKCS1_SIGN_BORINGSSL_H_ 19 20 #include <memory> 21 #include <string> 22 #include <utility> 23 24 #include "absl/strings/string_view.h" 25 #include "openssl/ec.h" 26 #include "openssl/rsa.h" 27 #include "tink/internal/fips_utils.h" 28 #include "tink/internal/rsa_util.h" 29 #include "tink/internal/ssl_unique_ptr.h" 30 #include "tink/public_key_sign.h" 31 #include "tink/subtle/common_enums.h" 32 #include "tink/util/statusor.h" 33 34 namespace crypto { 35 namespace tink { 36 namespace subtle { 37 38 // The RSA SSA (Signature Schemes with Appendix) using PKCS1 (Public-Key 39 // Cryptography Standards) encoding is defined at 40 // https://tools.ietf.org/html/rfc8017#section-8.2). This implemention uses 41 // Boring SSL for the underlying cryptographic operations. 42 class RsaSsaPkcs1SignBoringSsl : public PublicKeySign { 43 public: 44 static crypto::tink::util::StatusOr<std::unique_ptr<PublicKeySign>> New( 45 const internal::RsaPrivateKey& private_key, 46 const internal::RsaSsaPkcs1Params& params); 47 48 // Computes the signature for 'data'. 49 crypto::tink::util::StatusOr<std::string> Sign( 50 absl::string_view data) const override; 51 52 ~RsaSsaPkcs1SignBoringSsl() override = default; 53 54 static constexpr crypto::tink::internal::FipsCompatibility kFipsStatus = 55 crypto::tink::internal::FipsCompatibility::kRequiresBoringCrypto; 56 57 private: RsaSsaPkcs1SignBoringSsl(internal::SslUniquePtr<RSA> private_key,const EVP_MD * sig_hash)58 RsaSsaPkcs1SignBoringSsl(internal::SslUniquePtr<RSA> private_key, 59 const EVP_MD* sig_hash) 60 : private_key_(std::move(private_key)), sig_hash_(sig_hash) {} 61 62 const internal::SslUniquePtr<RSA> private_key_; 63 const EVP_MD* const sig_hash_; // Owned by BoringSSL. 64 }; 65 66 } // namespace subtle 67 } // namespace tink 68 } // namespace crypto 69 70 #endif // TINK_SUBTLE_RSA_SSA_PKCS1_SIGN_BORINGSSL_H_ 71