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29 lines
829 B
C++
29 lines
829 B
C++
// (C) 2017 University of Bristol. See License.txt
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#include "Commit.h"
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#include "random.h"
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void Commit(octetStream& comm,octetStream& open,const octetStream& message, int send_player)
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{
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open.store(send_player);
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open.append(message.get_data(), message.get_length());
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open.append_random(SEED_SIZE);
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comm = open.hash();
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}
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bool Open(octetStream& message,const octetStream& comm,const octetStream& open, int send_player)
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{
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octetStream h = open.hash();
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octet* open_bytes = open.get_data();
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// first 4 bytes are player no.
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int open_player = BYTES_TO_INT(open_bytes);
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if (!(h.equals(comm) && open_player == send_player))
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{
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return false;
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}
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message.reset_write_head();
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message.append(open_bytes + sizeof(int), open.get_length() - SEED_SIZE - sizeof(int));
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return true;
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}
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