87     std::unique_ptr<Aes128Gcm> cipher_;  member
141     CHECK(!cipher_);  in InitCipher()
161     cipher_.reset(new Aes128Gcm(key_material, key_material_len));  in InitCipher()
167     CHECK(cipher_);  in Encrypt()
171     Data encrypted(cipher_->EncryptedSize(data.size()));  in Encrypt()
172     auto out_size = cipher_->Encrypt(data.data(), data.size(), encrypted.data(), encrypted.size());  in Encrypt()
183     CHECK(cipher_);  in Decrypt()
187     Data decrypted(cipher_->DecryptedSize(data.size()));  in Decrypt()
189     auto out_size = cipher_->Decrypt(data.data(), data.size(), decrypted.data(), decrypted_size);  in Decrypt()
200     CHECK(cipher_);  in SafeEncryptedSize()
201     return cipher_->EncryptedSize(len);  in SafeEncryptedSize()
205     CHECK(cipher_);  in SafeDecryptedSize()
206     return cipher_->DecryptedSize(len);  in SafeDecryptedSize()