lokinet/llarp/proofofwork.cpp

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#include <llarp/time.h>
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#include <cmath>
#include <llarp/pow.hpp>
#include "buffer.hpp"
namespace llarp
{
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PoW::~PoW()
{
}
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bool
PoW::BDecode(llarp_buffer_t* buf)
{
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// TODO: implement me
return false;
}
bool
PoW::DecodeKey(llarp_buffer_t k, llarp_buffer_t* val)
{
// TODO: implement me
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return false;
}
bool
PoW::BEncode(llarp_buffer_t* buf) const
{
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// TODO: implement me
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return false;
}
bool
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PoW::IsValid(llarp_shorthash_func hashfunc) const
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{
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auto now = llarp_time_now_ms();
if(now - timestamp > (uint64_t(extendedLifetime) * 1000))
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return false;
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byte_t digest[SHORTHASHSIZE];
byte_t tmp[MaxSize];
auto buf = llarp::StackBuffer< decltype(tmp) >(tmp);
// encode
if(!BEncode(&buf))
return false;
// rewind
buf.sz = buf.cur - buf.base;
buf.cur = buf.base;
// hash
if(!hashfunc(digest, buf))
return false;
// check bytes required
uint32_t required = std::floor(std::log(extendedLifetime));
for(uint32_t idx = 0; idx < required; ++idx)
{
if(digest[idx])
return false;
}
return true;
}
} // namespace llarp