201     int output_written = -1;  in Finish()  local
202     if (!EVP_CipherFinal_ex(&ctx_, output->peek_write(), &output_written)) {  in Finish()
210     assert(output_written >= 0);  in Finish()
211     assert(static_cast<size_t>(output_written) <= block_size_bytes());  in Finish()
212     if (!output->advance_write(output_written)) return KM_ERROR_UNKNOWN_ERROR;  in Finish()
332     int output_written;  in ProcessBufferedAadBlock()  local
333     if (EVP_CipherUpdate(&ctx_, nullptr /* out */, &output_written, aad_block_buf_.get(),  in ProcessBufferedAadBlock()
344     int output_written;  in ProcessAadBlocks()  local
345     if (EVP_CipherUpdate(&ctx_, nullptr /* out */, &output_written, data,  in ProcessAadBlocks()
377     int output_written = -1;  in InternalUpdate()  local
378     if (!EVP_CipherUpdate(&ctx_, output->peek_write(), &output_written, input, input_length)) {  in InternalUpdate()
382     return output->advance_write(output_written);  in InternalUpdate()