Function DeserializeHDKeypaths

src/script/sign.h:159–185

// Deserialize HD keypaths into a map
template<typename Stream>
void DeserializeHDKeypaths(Stream& s, const std::vector<unsigned char>& key, std::map<CPubKey, std::vector<uint32_t>>& hd_keypaths)
{
    // Make sure that the key is the size of pubkey + 1
    if (key.size() != CPubKey::PUBLIC_KEY_SIZE + 1 && key.size() != CPubKey::COMPRESSED_PUBLIC_KEY_SIZE + 1) {
        throw std::ios_base::failure("Size of key was not the expected size for the type BIP32 keypath");
    }
    // Read in the pubkey from key
    CPubKey pubkey(key.begin() + 1, key.end());
    if (!pubkey.IsFullyValid()) {
       throw std::ios_base::failure("Invalid pubkey");
    }
    if (hd_keypaths.count(pubkey) > 0) {
        throw std::ios_base::failure("Duplicate Key, pubkey derivation path already provided");
    }

    // Read in key path
    uint64_t value_len = ReadCompactSize(s);
    std::vector<uint32_t> keypath;
    for (unsigned int i = 0; i < value_len; i += sizeof(uint32_t)) {
        uint32_t index;
        s >> index;
        keypath.push_back(index);
    }

    // Add to map
    hd_keypaths.emplace(pubkey, keypath);
}

// Serialize HD keypaths to a stream from a map
template<typename Stream>