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note about pubkey collision

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Anthony Towns 2019-08-24 15:08:05 +10:00 committed by Pieter Wuille
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bip-schnorr.mediawiki
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@ -128,6 +128,8 @@ To generate the corresponding public key:
* Fail if ''int(sk) = 0'' or ''int(sk) >= n''
* The public key corresponding to secret key ''sk'' is ''pubkey(sk)''.
Note that the two secret keys ''sk'' and ''bytes(n-int(sk))'' will generate the same public key.
Alternatively, the public key can be created according to [https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki BIP32] which describes the derivation of 33-byte compressed public keys.
In order to translate such public keys into bip-schnorr compatible keys, the first byte must be dropped.