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BIP85: Fix wrong test vector

There seems to be an error in the entropy of the Test Vector in BIP85. * In test case1, `DERIVED KEY` is correct, but `DERIVED ENTROPY` is wrong. `efecfbccffea313214232d29e71563d941229afb4338c21f9517c41aaa0d16f00b83d2a09ef747e7a64e8e2bd5a14869e693da66ce94ac2da570ab7ee48618f7` is correct. * In test case2, `DERIVED KEY` is correct, but `DERIVED ENTROPY` is wrong. `70c6e3e8ebee8dc4c0dbba66076819bb8c09672527c4277ca8729532ad711872218f826919f6b67218adde99018a6df9095ab2b58d803b5b93ec9802085a690e` is c

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azuchi·Updated Aug 1, 2020·0 reviews·0 attestations·View source
Collections:BIPs — Merged

Specification

There seems to be an error in the entropy of the Test Vector in BIP85.

  • In test case1, DERIVED KEY is correct, but DERIVED ENTROPY is wrong. efecfbccffea313214232d29e71563d941229afb4338c21f9517c41aaa0d16f00b83d2a09ef747e7a64e8e2bd5a14869e693da66ce94ac2da570ab7ee48618f7 is correct.
  • In test case2, DERIVED KEY is correct, but DERIVED ENTROPY is wrong. 70c6e3e8ebee8dc4c0dbba66076819bb8c09672527c4277ca8729532ad711872218f826919f6b67218adde99018a6df9095ab2b58d803b5b93ec9802085a690e is correct.

The entropy derivation for the other applications has been derived correctly except for the following path mistake.

  • In XPRV test vector, app_no in the path is 39' but 32' is correct, in which case the DERIVED ENTROPY is 52405cd0dd21c5be78314a7c1a3c65ffd8d896536cc7dee3157db5824f0c92e2ead0b33988a616cf6a497f1c169d9e92562604e38305ccd3fc96f2252c177682. If DERIVED ENTROPY does not include chaincode, need to change it to ead0b33988a616cf6a497f1c169d9e92562604e38305ccd3fc96f2252c177682.

python-bipentropy also outputs the above entropies.

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