Method ImplicitlyLearnRelatedKeyScripts

src/keystore.cpp:10–33

#include <util.h>

void CBasicKeyStore::ImplicitlyLearnRelatedKeyScripts(const CPubKey& pubkey)
{
    AssertLockHeld(cs_KeyStore);
    CKeyID key_id = pubkey.GetID();
    // We must actually know about this key already.
    assert(HaveKey(key_id) || mapWatchKeys.count(key_id));
    // This adds the redeemscripts necessary to detect P2WPKH and P2SH-P2WPKH
    // outputs. Technically P2WPKH outputs don't have a redeemscript to be
    // spent. However, our current IsMine logic requires the corresponding
    // P2SH-P2WPKH redeemscript to be present in the wallet in order to accept
    // payment even to P2WPKH outputs.
    // Also note that having superfluous scripts in the keystore never hurts.
    // They're only used to guide recursion in signing and IsMine logic - if
    // a script is present but we can't do anything with it, it has no effect.
    // "Implicitly" refers to fact that scripts are derived automatically from
    // existing keys, and are present in memory, even without being explicitly
    // loaded (e.g. from a file).
    if (pubkey.IsCompressed()) {
        CScript script = GetScriptForDestination(WitnessV0KeyHash(key_id));
        // This does not use AddCScript, as it may be overridden.
        CScriptID id(script);
        mapScripts[id] = std::move(script);
    }
}

bool CBasicKeyStore::GetPubKey(const CKeyID &address, CPubKey &vchPubKeyOut) const
{