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Store version bytes and be able to serialize them in CExtPubKey

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CExtPubKey does not store the version bytes for the extended public key.
We store these so that a CExtPubKey can be serialized and deserialized with
the same version bytes.
This commit is contained in:
Andrew Chow 2019-07-25 11:28:57 -04:00
parent 5fdaf6a2ad
commit a69332fd89
2 changed files with 16 additions and 0 deletions
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12
src/pubkey.cpp
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@ -352,6 +352,18 @@ void CExtPubKey::Decode(const unsigned char code[BIP32_EXTKEY_SIZE]) {
if ((nDepth == 0 && (nChild != 0 || ReadLE32(vchFingerprint) != 0)) || !pubkey.IsFullyValid()) pubkey = CPubKey(); if ((nDepth == 0 && (nChild != 0 || ReadLE32(vchFingerprint) != 0)) || !pubkey.IsFullyValid()) pubkey = CPubKey();
} }
void CExtPubKey::EncodeWithVersion(unsigned char code[BIP32_EXTKEY_WITH_VERSION_SIZE]) const
{
memcpy(code, version, 4);
Encode(&code[4]);
}
void CExtPubKey::DecodeWithVersion(const unsigned char code[BIP32_EXTKEY_WITH_VERSION_SIZE])
{
memcpy(version, code, 4);
Decode(&code[4]);
}
bool CExtPubKey::Derive(CExtPubKey &out, unsigned int _nChild) const { bool CExtPubKey::Derive(CExtPubKey &out, unsigned int _nChild) const {
out.nDepth = nDepth + 1; out.nDepth = nDepth + 1;
CKeyID id = pubkey.GetID(); CKeyID id = pubkey.GetID();

4
src/pubkey.h
View file

@ -17,6 +17,7 @@
#include <vector> #include <vector>
const unsigned int BIP32_EXTKEY_SIZE = 74; const unsigned int BIP32_EXTKEY_SIZE = 74;
const unsigned int BIP32_EXTKEY_WITH_VERSION_SIZE = 78;
/** A reference to a CKey: the Hash160 of its serialized public key */ /** A reference to a CKey: the Hash160 of its serialized public key */
class CKeyID : public uint160 class CKeyID : public uint160
@ -283,6 +284,7 @@ public:
}; };
struct CExtPubKey { struct CExtPubKey {
unsigned char version[4];
unsigned char nDepth; unsigned char nDepth;
unsigned char vchFingerprint[4]; unsigned char vchFingerprint[4];
unsigned int nChild; unsigned int nChild;
@ -305,6 +307,8 @@ struct CExtPubKey {
void Encode(unsigned char code[BIP32_EXTKEY_SIZE]) const; void Encode(unsigned char code[BIP32_EXTKEY_SIZE]) const;
void Decode(const unsigned char code[BIP32_EXTKEY_SIZE]); void Decode(const unsigned char code[BIP32_EXTKEY_SIZE]);
void EncodeWithVersion(unsigned char code[BIP32_EXTKEY_WITH_VERSION_SIZE]) const;
void DecodeWithVersion(const unsigned char code[BIP32_EXTKEY_WITH_VERSION_SIZE]);
bool Derive(CExtPubKey& out, unsigned int nChild) const; bool Derive(CExtPubKey& out, unsigned int nChild) const;
}; };