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WIF: Support PVT_K1 format.

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This commit is contained in:
Henrik Hautakoski 2023-03-25 16:25:02 +01:00
parent ea411793a2
commit 1aa6906ba2
7 changed files with 157 additions and 38 deletions
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18
src/wif/codec.hpp
View file

@ -47,6 +47,24 @@ bool pub_decoder_legacy(const std::vector<unsigned char>& buf, ec_pubkey_t& key)
bool pub_decoder_k1(const std::vector<unsigned char>& buf, ec_pubkey_t& key);
/**
* Private-key encoders
*/
typedef size_t (*priv_encoder_t)(const ec_privkey_t&, unsigned char *);
size_t priv_encoder_legacy(const ec_privkey_t& priv, unsigned char *buf);
size_t priv_encoder_k1(const ec_privkey_t& priv, unsigned char *buf);
/**
* Private-key decoders
*/
typedef bool (*priv_decoder_t)(const std::vector<unsigned char>&, ec_privkey_t&);
bool priv_decoder_legacy(const std::vector<unsigned char>& buf, ec_privkey_t& priv);
bool priv_decoder_k1(const std::vector<unsigned char>& buf, ec_privkey_t& priv);
}} // namespace libeosio::internal
#endif /* LIBEOSIO_CODEC_H */

24
src/wif/k1.cpp
View file

@ -61,4 +61,28 @@ bool pub_decoder_k1(const std::vector<unsigned char>& buf, ec_pubkey_t& key) {
return true;
}
size_t priv_encoder_k1(const ec_privkey_t& priv, unsigned char *buf) {
checksum_t check = _checksum_suffix(priv.data(), EC_PRIVKEY_SIZE, "K1");
memcpy(buf, priv.data(), priv.size());
memcpy(buf + EC_PRIVKEY_SIZE, check.data(), check.size());
return EC_PRIVKEY_SIZE + CHECKSUM_SIZE;
}
bool priv_decoder_k1(const std::vector<unsigned char>& buf, ec_privkey_t& priv) {
if (buf.size() != EC_PRIVKEY_SIZE + CHECKSUM_SIZE) {
return false;
}
checksum_t check = _checksum_suffix(buf.data(), EC_PRIVKEY_SIZE, "K1");
if (memcmp(buf.data() + EC_PRIVKEY_SIZE, check.data(), CHECKSUM_SIZE)) {
return false;
}
memcpy(priv.data(), buf.data(), priv.size());
return true;
}
}} // namespace libeosio::internal

30
src/wif/legacy.cpp
View file

@ -27,6 +27,8 @@
namespace libeosio { namespace internal {
#define PRIV_KEY_PREFIX 0x80 /* 0x80 for "Bitcoin mainnet". Always used by EOS. */
void pub_encoder_legacy(const ec_pubkey_t& key, unsigned char *buf) {
checksum_t check = checksum_ripemd160(key.data(), EC_PUBKEY_SIZE);
@ -45,4 +47,32 @@ bool pub_decoder_legacy(const std::vector<unsigned char>& buf, ec_pubkey_t& key)
return true;
}
size_t priv_encoder_legacy(const ec_privkey_t& priv, unsigned char *buf) {
checksum_t check;
buf[0] = PRIV_KEY_PREFIX;
memcpy(buf + 1, priv.data(), EC_PRIVKEY_SIZE);
check = checksum_sha256d(buf, 1 + EC_PRIVKEY_SIZE);
memcpy(buf + 1 + EC_PRIVKEY_SIZE, check.data(), check.size());
return 1 + EC_PRIVKEY_SIZE + CHECKSUM_SIZE;
}
bool priv_decoder_legacy(const std::vector<unsigned char>& buf, ec_privkey_t& priv) {
if (buf[0] != PRIV_KEY_PREFIX) {
return false;
}
if (buf.size() != 1 + EC_PRIVKEY_SIZE + CHECKSUM_SIZE) {
return false;
}
if (!checksum_validate<checksum_sha256d>(buf.data(), buf.size())) {
return false;
}
memcpy(priv.data(), buf.data() + 1, priv.size());
return true;
}
}} // namespace libeosio::internal