mirror of
https://github.com/oxen-io/lokinet
synced 2023-12-14 06:53:00 +01:00
68 lines
1.4 KiB
C++
68 lines
1.4 KiB
C++
#include <pow.hpp>
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#include <crypto/crypto.hpp>
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#include <util/buffer.hpp>
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#include <cmath>
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namespace llarp
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{
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PoW::~PoW() = default;
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bool
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PoW::DecodeKey(const llarp_buffer_t& /*k*/, llarp_buffer_t* /*val*/)
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{
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// TODO: implement me
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return false;
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}
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bool
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PoW::BEncode(llarp_buffer_t* buf) const
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{
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// TODO: implement me
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if(!bencode_start_dict(buf))
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return false;
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return bencode_end(buf);
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}
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bool
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PoW::IsValid(llarp_time_t now) const
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{
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if(now - timestamp > extendedLifetime)
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return false;
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ShortHash digest;
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std::array< byte_t, MaxSize > tmp;
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llarp_buffer_t buf(tmp);
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// encode
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if(!BEncode(&buf))
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return false;
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// rewind
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buf.sz = buf.cur - buf.base;
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buf.cur = buf.base;
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// hash
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if(!CryptoManager::instance()->shorthash(digest, buf))
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return false;
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// check bytes required
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uint32_t required = std::floor(std::log(extendedLifetime.count()));
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for(uint32_t idx = 0; idx < required; ++idx)
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{
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if(digest[idx])
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return false;
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}
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return true;
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}
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std::ostream&
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PoW::print(std::ostream& stream, int level, int spaces) const
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{
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Printer printer(stream, level, spaces);
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printer.printAttribute("pow timestamp", timestamp.count());
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printer.printAttribute("lifetime", extendedLifetime.count());
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printer.printAttribute("nonce", nonce);
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return stream;
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}
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} // namespace llarp
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