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Merge pull request #955 from apoelstra/2020-07-hash-preimages-to-174

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BIP174: add hash preimage fields to inputs
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Luke Dashjr 2020-08-20 22:16:52 +00:00 committed by GitHub
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@ -200,6 +200,30 @@ The currently defined per-input types are defined as follows:
** Value: The UTF-8 encoded commitment message string for the proof-of-reserves. See [[bip-0127.mediawiki|BIP 127]] for more information. ** Value: The UTF-8 encoded commitment message string for the proof-of-reserves. See [[bip-0127.mediawiki|BIP 127]] for more information.
*** <tt>{porCommitment}</tt> *** <tt>{porCommitment}</tt>
* Type: RIPEMD160 preimage <tt>PSBT_RIPEMD160 = 0x0a</tt>
** Key: The resulting hash of the preimage
*** <tt>{0x0a}|{20-byte hash}</tt>
** Value: The hash preimage, encoded as a byte vector, which must equal the key when run through the `RIPEMD160` algorithm
*** <tt>{preimage}</tt>
* Type: SHA256 preimage <tt>PSBT_SHA256 = 0x0b</tt>
** Key: The resulting hash of the preimage
*** <tt>{0x0b}|{32-byte hash}</tt>
** Value: The hash preimage, encoded as a byte vector, which must equal the key when run through the `SHA256` algorithm
*** <tt>{preimage}</tt>
* Type: HASH160 preimage <tt>PSBT_HASH160 = 0x0c</tt>
** Key: The resulting hash of the preimage
*** <tt>{0x0c}|{20-byte hash}</tt>
** Value: The hash preimage, encoded as a byte vector, which must equal the key when run through the `SHA256` algorithm followed by the `RIPEMD160` algorithm
*** <tt>{preimage}</tt>
* Type: HASH256 preimage <tt>PSBT_HASH256 = 0x0d</tt>
** Key: The resulting hash of the preimage
*** <tt>{0x0d}|{32-byte hash}</tt>
** Value: The hash preimage, encoded as a byte vector, which must equal the key when run through the `SHA256` algorithm twice
*** <tt>{preimage}</tt>
* Type: Proprietary Use Type <tt>PSBT_IN_PROPRIETARY = 0xFC</tt> * Type: Proprietary Use Type <tt>PSBT_IN_PROPRIETARY = 0xFC</tt>
** Key: Variable length identifier prefix, followed by a subtype, followed by the key data itself. ** Key: Variable length identifier prefix, followed by a subtype, followed by the key data itself.
*** <tt>{0xFC}|<prefix>|{subtype}|{key data}</tt> *** <tt>{0xFC}|<prefix>|{subtype}|{key data}</tt>