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peer: Use prng to generate self detection nonce.

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This changes the nonce generated to detect self connections over to use
pseudo randoms instead of a cryptographically random nonce.

There is really not a good reason for it to be cryptographically strong,
using the prng is much faster, and the prng also doesn't burn entropy.
This commit is contained in:
Dave Collins 2017-05-13 04:19:36 -05:00
parent 8efd6b15ed
commit b85d2dc7f0
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GPG Key ID: B8904D9D9C93D1F2
1 changed files with 1 additions and 4 deletions
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5
peer/peer.go
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@ -794,10 +794,7 @@ func (p *Peer) localVersionMsg() (*wire.MsgVersion, error) {
// Generate a unique nonce for this peer so self connections can be
// detected. This is accomplished by adding it to a size-limited map of
// recently seen nonces.
nonce, err := wire.RandomUint64()
if err != nil {
return nil, err
}
nonce := uint64(rand.Int63())
sentNonces.Add(nonce)
// Version message.