1 // Copyright 2021 Google LLC 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_JWT_INTERNAL_JWT_PUBLIC_KEY_VERIFY_INTERNAL_H_ 18 #define TINK_JWT_INTERNAL_JWT_PUBLIC_KEY_VERIFY_INTERNAL_H_ 19 20 #include "absl/strings/string_view.h" 21 #include "tink/util/status.h" 22 #include "tink/util/statusor.h" 23 #include "tink/jwt/verified_jwt.h" 24 #include "tink/jwt/jwt_validator.h" 25 26 namespace crypto { 27 namespace tink { 28 29 /////////////////////////////////////////////////////////////////////////////// 30 // Internal interface for verifying signed JWT. 31 // 32 // Sees RFC 7519 and RFC 7515. Security guarantees: similar to PublicKeyVerify. 33 class JwtPublicKeyVerifyInternal { 34 public: 35 // Verifies and decodes a JWT token in the JWS compact serialization format. 36 // 37 // The JWT is validated against the rules in validator. That is, every claim 38 // in validator must also be present in the JWT. For example, if validator 39 // contains an issuer (iss) claim, the JWT must contain an identical claim. 40 // The JWT can contain claims that are NOT in the validator. However, if the 41 // JWT contains a list of audiences, the validator must also contain an 42 // audience in the list. 43 // 44 // If the JWT contains timestamp claims such as expiration (exp), issued_at 45 // (iat) or not_before (nbf), they will also be validated. validator allows to 46 // set a clock skew, to deal with small clock differences among different 47 // machines. 48 // 49 // When `kid` has a value only a token with the correct kid header is valid. 50 // When `kid` does not have a value a kid header in the token is ignored. 51 // `kid` is set by the primitive wrapper based on the output prefix type and 52 // the key id. 53 virtual crypto::tink::util::StatusOr<VerifiedJwt> VerifyAndDecodeWithKid( 54 absl::string_view compact, const JwtValidator& validator, 55 absl::optional<absl::string_view> kid) const = 0; 56 57 virtual ~JwtPublicKeyVerifyInternal() = default; 58 }; 59 60 } // namespace tink 61 } // namespace crypto 62 63 #endif // TINK_JWT_INTERNAL_JWT_PUBLIC_KEY_VERIFY_INTERNAL_H_ 64