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BIP118: tweak wording around 1-byte pubkey

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Anthony Towns 2021-06-13 09:24:07 +10:00
parent 420dc42f0e
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bip-0118.mediawiki
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@ -60,14 +60,14 @@ These keys are termed '''BIP 118 public keys'''.
==== Rules for signature opcodes ====
The [[bip-0342.mediawiki|BIP 342]] rules for signature opcodes are modified by removing keys with the first byte <code>0x01</code> and length of 1-byte or 33-bytes from the list of unknown public key types, and adding the following rule prior to the handling of unknown public key types:
The [[bip-0342.mediawiki|BIP 342]] rules for signature opcodes are modified by removing keys with the first byte <code>0x01</code> and length of either 1-byte or 33-bytes from the list of unknown public key types, and adding the following rule prior to the handling of unknown public key types:
* If the public key is the single byte <code>0x01</code>, or if the public key is 33 bytes and the first byte of the public key is <code>0x01</code>, it is considered to be a BIP 118 public key:
** If the signature is not the empty vector, the signature is validated according to the [[bip-0341.mediawiki|BIP 341]] signing validation rules with the public key, allowable <code>hash_type</code> values, and transaction digest modified as defined below.
==== Public key ====
To convert a 1-byte BIP 118 public key for use with [[bip-0340.mediawiki|BIP 340]], use the 32-byte taproot internal key, <code>p</code>, as defined in [[bip-0341.mediawiki|BIP 341]].
To convert the 1-byte BIP 118 public key for use with [[bip-0340.mediawiki|BIP 340]], use the 32-byte taproot internal key, <code>p</code>, as defined in [[bip-0341.mediawiki|BIP 341]].
To convert a 33-byte BIP 118 public key for use with [[bip-0340.mediawiki|BIP 340]], remove the <code>0x01</code> prefix and use the remaining 32 bytes.