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https://github.com/sot-tech/mochi.git
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8580bb37e0
* migrate torrentapproval to list storage * add initial support for torrent file storage (watch directory with fsnotify) * replace frontend/http/bencode package with github.com/zeebo/bencode module * sanitize code (fix warnings) TODO: * parse torrent files to get hashes, * watch directory event types DON'T use for now
18 lines
553 B
Go
18 lines
553 B
Go
package random
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import (
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"encoding/binary"
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"github.com/chihaya/chihaya/bittorrent"
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)
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// DeriveEntropyFromRequest generates 2*64 bits of pseudo random state from an
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// AnnounceRequest.
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//
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// Calling DeriveEntropyFromRequest multiple times yields the same values.
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func DeriveEntropyFromRequest(req *bittorrent.AnnounceRequest) (uint64, uint64) {
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v0 := binary.BigEndian.Uint64(req.InfoHash[:8]) + binary.BigEndian.Uint64(req.InfoHash[8:16])
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v1 := binary.BigEndian.Uint64(req.Peer.ID[:8]) + binary.BigEndian.Uint64(req.Peer.ID[8:16])
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return v0, v1
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}
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