695   auto blockSize = BlockSize();  in Encrypt()  local
696   uint64_t blockIndex = fileOffset / blockSize;  in Encrypt()
697   size_t blockOffset = fileOffset % blockSize;  in Encrypt()
706     size_t n = std::min(dataSize, blockSize - blockOffset);  in Encrypt()
707     if (n != blockSize) {  in Encrypt()
712         blockBuffer = std::unique_ptr<char[]>(new char[blockSize]);  in Encrypt()
740   auto blockSize = BlockSize();  in Decrypt()  local
741   uint64_t blockIndex = fileOffset / blockSize;  in Decrypt()
742   size_t blockOffset = fileOffset % blockSize;  in Decrypt()
751     size_t n = std::min(dataSize, blockSize - blockOffset);  in Decrypt()
752     if (n != blockSize) {  in Decrypt()
757         blockBuffer = std::unique_ptr<char[]>(new char[blockSize]);  in Decrypt()
806   auto blockSize = cipher_.BlockSize();  in AllocateScratch()  local
807   scratch.reserve(blockSize);  in AllocateScratch()
815   auto blockSize = cipher_.BlockSize();  in EncryptBlock()  local
816   memmove(scratch, iv_.data(), blockSize);  in EncryptBlock()
826   for (size_t i = 0; i < blockSize; i++) {  in EncryptBlock()
849 static void decodeCTRParameters(const char *prefix, size_t blockSize, uint64_t &initialCounter, Sli…  in decodeCTRParameters()  argument
853   iv = Slice(prefix + blockSize, blockSize);  in decodeCTRParameters()
868   auto blockSize = cipher_.BlockSize();  in CreateNewPrefix()  local
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()
900   auto blockSize = cipher_.BlockSize();  in CreateCipherStream()  local
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 … = cipherStream.Decrypt(0, (char*)prefix.data() + (2 * blockSize), prefix.size() - (2 * blockSize)…  in CreateCipherStream()