int memread(struct data_buffer buf)
{
long sum = 0;
char page[4096];
char *addr = buf.addr;
char *end = buf.addr + buf.size;
for (; addr < end; addr += sizeof(page)) {
memcpy(page, addr, sizeof(page));
sum += sum_buf(page, sizeof(page));
}
// The optimization of a compiler may remove the code entirely
// if we don't return the sum.
return sum;
}
/**
* Produce the final GOST 34.11 output
*/
void GOST_34_11::final_result(byte out[])
{
if(position)
{
clear_mem(buffer.begin() + position, buffer.size() - position);
compress_n(buffer, 1);
}
SecureBuffer<byte, 32> length_buf;
const u64bit bit_count = count * 8;
store_le(bit_count, length_buf);
SecureBuffer<byte, 32> sum_buf(sum);
compress_n(length_buf, 1);
compress_n(sum_buf, 1);
copy_mem(out, hash.begin(), 32);
clear();
}
