849 static void decodeCTRParameters(const char *prefix, size_t blockSize, uint64_t &initialCounter, Sli…  in decodeCTRParameters()  argument
851   initialCounter = DecodeFixed64(prefix);  in decodeCTRParameters()
853   iv = Slice(prefix + blockSize, blockSize);  in decodeCTRParameters()
859                                               char* prefix,  in CreateNewPrefix()  argument
865     prefix[i] = rnd.Uniform(256) & 0xFF;  in CreateNewPrefix()
871   decodeCTRParameters(prefix, blockSize, initialCounter, prefixIV);  in CreateNewPrefix()
874   PopulateSecretPrefixPart(prefix + (2 * blockSize), prefixLength - (2 * blockSize), blockSize);  in CreateNewPrefix()
878   auto status = cipherStream.Encrypt(0, prefix + (2 * blockSize), prefixLength - (2 * blockSize));  in CreateNewPrefix()
897     const std::string& fname, const EnvOptions& options, Slice& prefix,  in CreateCipherStream()  argument
903   decodeCTRParameters(prefix.data(), blockSize, initialCounter, iv);  in CreateCipherStream()
907   assert(prefix.size() >= 2 * blockSize);  in CreateCipherStream()
908   if (prefix.size() < 2 * blockSize) {  in CreateCipherStream()
915 …auto status = cipherStream.Decrypt(0, (char*)prefix.data() + (2 * blockSize), prefix.size() - (2 *…  in CreateCipherStream()
921   return CreateCipherStreamFromPrefix(fname, options, initialCounter, iv, prefix, result);  in CreateCipherStream()