PSBT: hash preimages fields #23718

pull darosior wants to merge 2 commits into bitcoin:master from darosior:psbt_preimages_fields changing 4 files +178 −2
  1. darosior commented at 10:06 PM on December 8, 2021: member

    This implements the bip174 input fields for hash preimages. One motivation is that we will need those once we implement signing support for Miniscript descriptors.

  2. DrahtBot added the label RPC/REST/ZMQ on Dec 8, 2021
  3. DrahtBot commented at 3:31 AM on December 9, 2021: member

    <!--e57a25ab6845829454e8d69fc972939a-->

    The following sections might be updated with supplementary metadata relevant to reviewers and maintainers.

    <!--174a7506f384e20aa4161008e828411d-->

    Conflicts

    Reviewers, this pull request conflicts with the following ones:

    • #22558 (psbt: Taproot fields for PSBT by achow101)
    • #21283 (Implement BIP 370 PSBTv2 by achow101)

    If you consider this pull request important, please also help to review the conflicting pull requests. Ideally, start with the one that should be merged first.

  4. DrahtBot added the label Needs rebase on Dec 9, 2021
  5. darosior force-pushed on Dec 9, 2021
  6. DrahtBot removed the label Needs rebase on Dec 9, 2021
  7. darosior force-pushed on Dec 9, 2021
  8. w0xlt commented at 7:25 PM on December 9, 2021: contributor

    Code Review ACK e947d1d

    Also tested manually decodepsbt with the PSBT fromtest/functional/data/rpc_psbt.json.

    How can a PSBT be generate with the preimage fields ?

  9. in test/functional/data/rpc_psbt.json:40 in e947d1dae7 outdated 
      33 | @@ -34,7 +34,14 @@
  34 |          "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",
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  41 | +        "cHNidP8BACoCAAAAAAFAQg8AAAAAABepFG6Rty1Vk+fUOR4v9E6R6YXDFkHwhwAAAAAAAA==",
    Sjors commented at 3:44 AM on December 10, 2021:

    This is a duplicate.

  10. in test/functional/data/rpc_psbt.json:39 in e947d1dae7 outdated 
      33 | @@ -34,7 +34,14 @@
  34 |          "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",
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    Sjors commented at 3:50 AM on December 10, 2021:

    This doesn't seem to have preimages, so why add it?

  11. in test/functional/data/rpc_psbt.json:40 in e947d1dae7 outdated 
      33 | @@ -34,7 +34,14 @@
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    Sjors commented at 3:51 AM on December 10, 2021:

    No preimages?

  12. in test/functional/data/rpc_psbt.json:43 in e947d1dae7 outdated 
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  37 | -        "cHNidP8BACoCAAAAAAFAQg8AAAAAABepFG6Rty1Vk+fUOR4v9E6R6YXDFkHwhwAAAAAAAA=="
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  40 | +        "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",
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  42 | +        "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",
    Sjors commented at 3:52 AM on December 10, 2021: 
          "ripemd160_preimages": {
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      }
  13. in test/functional/data/rpc_psbt.json:44 in e947d1dae7 outdated 
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  43 | +        "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",
    Sjors commented at 3:53 AM on December 10, 2021: 
         "sha256_preimages": {
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      }
  14. in test/functional/data/rpc_psbt.json:45 in e947d1dae7 outdated 
      39 | +        "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",
  40 | +        "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",
  41 | +        "cHNidP8BACoCAAAAAAFAQg8AAAAAABepFG6Rty1Vk+fUOR4v9E6R6YXDFkHwhwAAAAAAAA==",
  42 | +        "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",
  43 | +        "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",
  44 | +        "cHNidP8BAHUCAAAAASaBcTce3/KF6Tet7qSze3gADAVmy7OtZGQXE8pCFxv2AAAAAAD+////AtPf9QUAAAAAGXapFNDFmQPFusKGh2DpD9UhpGZap2UgiKwA4fUFAAAAABepFDVF5uM7gyxHBQ8k0+65PJwDlIvHh7MuEwAAAQD9pQEBAAAAAAECiaPHHqtNIOA3G7ukzGmPopXJRjr6Ljl/hTPMti+VZ+UBAAAAFxYAFL4Y0VKpsBIDna89p95PUzSe7LmF/////4b4qkOnHf8USIk6UwpyN+9rRgi7st0tAXHmOuxqSJC0AQAAABcWABT+Pp7xp0XpdNkCxDVZQ6vLNL1TU/////8CAMLrCwAAAAAZdqkUhc/xCX/Z4Ai7NK9wnGIZeziXikiIrHL++E4sAAAAF6kUM5cluiHv1irHU6m80GfWx6ajnQWHAkcwRAIgJxK+IuAnDzlPVoMR3HyppolwuAJf3TskAinwf4pfOiQCIAGLONfc0xTnNMkna9b7QPZzMlvEuqFEyADS8vAtsnZcASED0uFWdJQbrUqZY3LLh+GFbTZSYG2YVi/jnF6efkE/IQUCSDBFAiEA0SuFLYXc2WHS9fSrZgZU327tzHlMDDPOXMMJ/7X85Y0CIGczio4OFyXBl/saiK9Z9R5E5CVbIBZ8hoQDHAXR8lkqASECI7cr7vCWXRC+B3jv7NYfysb3mk6haTkzgHNEZPhPKrMAAAAAFQwVzEnhkcvFINkZRGAKXLd69qoykQIBAhUMxRtmvO1eRJEAG9cCZpdw3M9ECYIBAQAAAA==",
    Sjors commented at 3:53 AM on December 10, 2021: 
          "hash160_preimages": {
        "15cc49e191cbc520d91944600a5cb77af6aa3291": "0102",
        "c51b66bced5e4491001bd702669770dccf440982": "01"
      }
  15. in test/functional/data/rpc_psbt.json:46 in e947d1dae7 outdated 
      40 | +        "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",
  41 | +        "cHNidP8BACoCAAAAAAFAQg8AAAAAABepFG6Rty1Vk+fUOR4v9E6R6YXDFkHwhwAAAAAAAA==",
  42 | +        "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",
  43 | +        "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",
  44 | +        "cHNidP8BAHUCAAAAASaBcTce3/KF6Tet7qSze3gADAVmy7OtZGQXE8pCFxv2AAAAAAD+////AtPf9QUAAAAAGXapFNDFmQPFusKGh2DpD9UhpGZap2UgiKwA4fUFAAAAABepFDVF5uM7gyxHBQ8k0+65PJwDlIvHh7MuEwAAAQD9pQEBAAAAAAECiaPHHqtNIOA3G7ukzGmPopXJRjr6Ljl/hTPMti+VZ+UBAAAAFxYAFL4Y0VKpsBIDna89p95PUzSe7LmF/////4b4qkOnHf8USIk6UwpyN+9rRgi7st0tAXHmOuxqSJC0AQAAABcWABT+Pp7xp0XpdNkCxDVZQ6vLNL1TU/////8CAMLrCwAAAAAZdqkUhc/xCX/Z4Ai7NK9wnGIZeziXikiIrHL++E4sAAAAF6kUM5cluiHv1irHU6m80GfWx6ajnQWHAkcwRAIgJxK+IuAnDzlPVoMR3HyppolwuAJf3TskAinwf4pfOiQCIAGLONfc0xTnNMkna9b7QPZzMlvEuqFEyADS8vAtsnZcASED0uFWdJQbrUqZY3LLh+GFbTZSYG2YVi/jnF6efkE/IQUCSDBFAiEA0SuFLYXc2WHS9fSrZgZU327tzHlMDDPOXMMJ/7X85Y0CIGczio4OFyXBl/saiK9Z9R5E5CVbIBZ8hoQDHAXR8lkqASECI7cr7vCWXRC+B3jv7NYfysb3mk6haTkzgHNEZPhPKrMAAAAAFQwVzEnhkcvFINkZRGAKXLd69qoykQIBAhUMxRtmvO1eRJEAG9cCZpdw3M9ECYIBAQAAAA==",
  45 | +        "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"
    Sjors commented at 3:54 AM on December 10, 2021: 
          "hash256_preimages": {
        "76a56aced915d2513dcd84c2c378b2e8aa5cd632b5b71ca2f2ac5b0e3a649bdb": "0102",
        "9c12cfdc04c74584d787ac3d23772132c18524bc7ab28dec4219b8fc5b425f70": "01"
      }
  16. Sjors commented at 3:56 AM on December 10, 2021: member

    tACK e947d1d modulo duplicate test vector

    Would be good to have a test that decodepsbt actually displays the new fields.

    It looks like BIP174 test vectors were not updated when these new fields were added. You may want to make a PR to the BIP repo to add the ones you introduce here.

    Paging Mr PSBT @achow101. @w0xlt you'd have to use different software, because Bitcoin Core doesn't use these fields (yet!)

  17. darosior force-pushed on Dec 10, 2021
  18. darosior commented at 8:24 AM on December 10, 2021: member

    Thanks Sjors, i messed up the test vectors when cherry-picking from my version based on #17034. Corrected.

  19. Sjors commented at 1:05 PM on December 10, 2021: member

    tACK d1fdbd421737e6bdf1857fd68a79d69096d60b90

  20. in src/psbt.h:66 in 9ff68e3886 outdated 
      59 | @@ -56,6 +60,10 @@ struct PSBTInput
  60 |      CScriptWitness final_script_witness;
  61 |      std::map<CPubKey, KeyOriginInfo> hd_keypaths;
  62 |      std::map<CKeyID, SigPair> partial_sigs;
  63 | +    std::map<std::vector<unsigned char>, std::vector<unsigned char>> ripemd160_preimages;
  64 | +    std::map<std::vector<unsigned char>, std::vector<unsigned char>> sha256_preimages;
  65 | +    std::map<std::vector<unsigned char>, std::vector<unsigned char>> hash160_preimages;
  66 | +    std::map<std::vector<unsigned char>, std::vector<unsigned char>> hash256_preimages;
    achow101 commented at 6:21 PM on December 10, 2021:

    In 9ff68e38862106c827d40ab09731bd75a59d140c "psbt: implement hash preimages fields"

    Hashes are almost always represented using uint256/uint160 internally, so we should key by those instead.

    darosior commented at 2:59 PM on December 11, 2021:

    I've made them byte vectors because that's how they are represented in the Miniscript satisfier (1, 2). Keying by each hash type would thus effectively result in >=2 needless copies (once when creating them here and n times when using them with the satisfier).

    sipa commented at 3:53 PM on December 11, 2021:

    I don't think that really matters. Copying/creating/comparing a uint160/uint256 is very cheap (it's literally just 20 or 32 bytes in memory), while vector creation/copying is slow (it involves memory allocations, and some 40 bytes of overhead).

  21. in src/rpc/rawtransaction.cpp:1152 in d1fdbd4217 outdated 
    1148 | +                                }},
1149 | +                                {RPCResult::Type::OBJ_DYN, "hash256_preimages", /*optional=*/ true, "",
1150 | +                                {
1151 | +                                    {RPCResult::Type::STR, "hash", "The hash and preimage that corresponds to it."},
1152 | +                                }},
1153 | +                                {RPCResult::Type::OBJ_DYN, "unknown", /*optional=*/ true, "The unknown global fields",
    achow101 commented at 6:31 PM on December 10, 2021:

    In d1fdbd421737e6bdf1857fd68a79d69096d60b90 "rpc: output all hash preimages in 'decodepsbt'"

    nit: While you're here, fix the typo

                                    {RPCResult::Type::OBJ_DYN, "unknown", /*optional=*/ true, "The unknown input fields",
  22. DrahtBot added the label Needs rebase on Dec 10, 2021
  23. psbt: implement hash preimages fields 4d6b5321a5
  24. rpc: output all hash preimages in 'decodepsbt' a9256dc340
  25. darosior force-pushed on Dec 11, 2021
  26. darosior commented at 5:38 PM on December 11, 2021: member

    Rebased and addressed comments.

  27. DrahtBot removed the label Needs rebase on Dec 11, 2021
  28. Sjors approved
  29. Sjors commented at 2:25 AM on December 12, 2021: member

    re-tACK a9256dc3402a6e39ff2267efc892c0d3d41310b6

  30. achow101 commented at 2:31 AM on December 12, 2021: member

    ACK a9256dc3402a6e39ff2267efc892c0d3d41310b6

  31. w0xlt approved
  32. w0xlt commented at 6:23 AM on December 13, 2021: contributor

    reACK a9256dc

    Tested with the PSBTs from test/functional/data/rpc_psbt.json.

    Where (besides BIP 174) can I find more information about these fields? How are they generated and where are they used?

  33. Sjors commented at 7:08 AM on December 13, 2021: member

    @w0xlt: some of it is explained here in a post by @apoelstra: https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2019-March/016713.html

  34. MarcoFalke merged this on Dec 13, 2021
  35. MarcoFalke closed this on Dec 13, 2021
  36. sidhujag referenced this in commit 218be91428 on Dec 13, 2021
  37. DrahtBot locked this on Dec 13, 2022
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