Merge bitcoin#22095: test: Additional BIP32 test vector for hardened …

…derivation with leading zeros

91ef834 Additional test vector for hardened derivation with leading zeros (Kristaps Kaupe)

Pull request description:

  See [Inconsistent BIP32 Derivations](https://blog.polychainlabs.com/bitcoin,/bip32,/bip39,/kdf/2021/05/17/inconsistent-bip32-derivations.html) and bitcoin/bips#1030.

ACKs for top commit:
  practicalswift:
    cr ACK 91ef834
  sipa:
    ACK 91ef834. Verified that it matches the linked BIP32 update, and that it indeed tests derivation from a private key with leading 0 byte.

Tree-SHA512: 0a3ae7aed15e4e08e9bec5db8de53c6c03ed3b3632f390394eea422597755173cbd2228ff0cfa57f5aae3df9d4cdf03a8ef4725cc8bce86ab7d9c82ab9d479ad

src/test/bip32_tests.cpp

@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2020 The Bitcoin Core developers
+// Copyright (c) 2013-2021 The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -87,6 +87,18 @@ TestVector test3 =
      "xprv9uPDJpEQgRQfDcW7BkF7eTya6RPxXeJCqCJGHuCJ4GiRVLzkTXBAJMu2qaMWPrS7AANYqdq6vcBcBUdJCVVFceUvJFjaPdGZ2y9WACViL4L",
       0);
 
+TestVector test4 =
+  TestVector("3ddd5602285899a946114506157c7997e5444528f3003f6134712147db19b678")
+    ("xpub661MyMwAqRbcGczjuMoRm6dXaLDEhW1u34gKenbeYqAix21mdUKJyuyu5F1rzYGVxyL6tmgBUAEPrEz92mBXjByMRiJdba9wpnN37RLLAXa",
+     "xprv9s21ZrQH143K48vGoLGRPxgo2JNkJ3J3fqkirQC2zVdk5Dgd5w14S7fRDyHH4dWNHUgkvsvNDCkvAwcSHNAQwhwgNMgZhLtQC63zxwhQmRv",
+     0x80000000)
+    ("xpub69AUMk3qDBi3uW1sXgjCmVjJ2G6WQoYSnNHyzkmdCHEhSZ4tBok37xfFEqHd2AddP56Tqp4o56AePAgCjYdvpW2PU2jbUPFKsav5ut6Ch1m",
+     "xprv9vB7xEWwNp9kh1wQRfCCQMnZUEG21LpbR9NPCNN1dwhiZkjjeGRnaALmPXCX7SgjFTiCTT6bXes17boXtjq3xLpcDjzEuGLQBM5ohqkao9G",
+     0x80000001)
+    ("xpub6BJA1jSqiukeaesWfxe6sNK9CCGaujFFSJLomWHprUL9DePQ4JDkM5d88n49sMGJxrhpjazuXYWdMf17C9T5XnxkopaeS7jGk1GyyVziaMt",
+     "xprv9xJocDuwtYCMNAo3Zw76WENQeAS6WGXQ55RCy7tDJ8oALr4FWkuVoHJeHVAcAqiZLE7Je3vZJHxspZdFHfnBEjHqU5hG1Jaj32dVoS6XLT1",
+     0);
+
 static void RunTest(const TestVector &test) {
     std::vector<unsigned char> seed = ParseHex(test.strHexMaster);
     CExtKey key;
@@ -135,4 +147,8 @@ BOOST_AUTO_TEST_CASE(bip32_test3) {
     RunTest(test3);
 }
 
+BOOST_AUTO_TEST_CASE(bip32_test4) {
+    RunTest(test4);
+}
+
 BOOST_AUTO_TEST_SUITE_END()