1 // Copyright 2019 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_SUBTLE_STREAMING_AEAD_TEST_UTIL_H_ 18 #define TINK_SUBTLE_STREAMING_AEAD_TEST_UTIL_H_ 19 20 #include "absl/strings/string_view.h" 21 #include "tink/streaming_aead.h" 22 #include "tink/util/status.h" 23 24 namespace crypto { 25 namespace tink { 26 27 // Encrypt with NewEncryptingStream, then decrypt using NewDecryptingStream, 28 // and NewDecryptingRandomAccessStream (for a few fragments). 29 // 'ciphertext_offset' is the offset of the actual ciphertext in the 30 // computed ciphertext stream (cf. description of StreamSegmentEncrypter 31 // in stream_segment_encrypter.h). 32 // Any error will be propagated to the caller. Returns OK if the resulting 33 // decryptions are equal to the plaintext. 34 crypto::tink::util::Status EncryptThenDecrypt(StreamingAead* encrypter, 35 StreamingAead* decrypter, 36 absl::string_view plaintext, 37 absl::string_view associated_data, 38 int ciphertext_offset); 39 40 } // namespace tink 41 } // namespace crypto 42 43 #endif // TINK_SUBTLE_STREAMING_AEAD_TEST_UTIL_H_ 44