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include/libeosio/ec.hpp: adding ec_generate_privkey() and ec_get_publickey()

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This commit is contained in:
Henrik Hautakoski 2023-03-19 21:44:41 +01:00
parent 4b8c1c7733
commit 171876bbfa
4 changed files with 214 additions and 0 deletions
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10
include/libeosio/ec.hpp
View file

@ -62,6 +62,16 @@ struct ec_keypair {
*/
int ec_init();
/**
* Generates an new random private key using the secp256k1 curve.
*/
int ec_generate_privkey(ec_privkey_t *priv);
/**
* Get the public key from an private key.
*/
int ec_get_publickey(const ec_privkey_t *priv, ec_pubkey_t* pub);
/**
* Generates a keypair using the secp256k1 curve.
* public key is in compressed format.

61
src/openssl/ec.cpp
View file

@ -60,6 +60,67 @@ void ec_shutdown() {
}
}
int ec_generate_privkey(ec_privkey_t *priv) {
// Generate new private key.
if (EC_KEY_generate_key(k) == 0) {
return -1;
}
if (EC_KEY_priv2oct(k, priv->data(), EC_PRIVKEY_SIZE) == 0) {
return -1;
}
return 0;
}
// Calcualte a public key from a EC_KEY object.
int calculate_pubkey(EC_KEY *ec_key, ec_pubkey_t *pub) {
const BIGNUM* pk;
const EC_GROUP *group;
EC_POINT *point;
int rc;
// Get the curve (group) number first.
if ((group = EC_KEY_get0_group(ec_key)) == NULL) {
return 0;
}
// Then get the private key number
if ((pk = EC_KEY_get0_private_key(ec_key)) == NULL) {
return 0;
}
// Create a new point.
if ((point = EC_POINT_new(group)) == NULL) {
return 0;
}
// Multiply curve (group) and private key to get the public key.
rc = EC_POINT_mul(group, point, pk, NULL, NULL, ctx);
if (rc != 0) {
// Encode public key
rc = EC_POINT_point2oct(group, point, POINT_CONVERSION_COMPRESSED,
pub->data(), EC_PUBKEY_SIZE, ctx);
}
EC_POINT_free(point);
return rc;
}
int ec_get_publickey(const ec_privkey_t *priv, ec_pubkey_t* pub) {
const BIGNUM* n;
const EC_GROUP *group;
EC_POINT *point;
// Load private key
if (EC_KEY_oct2priv(k, priv->data(), EC_PRIVKEY_SIZE) == 0) {
return -1;
}
return calculate_pubkey(k, pub) == 0 ? -1 : 0;
}
int ec_generate_key(struct ec_keypair *pair) {

3
tests/CMakeLists.txt
View file

@ -2,6 +2,9 @@
set(TEST_SRC
main.cpp
# ec
ec/pubkey.cpp
# Base58
base58/encode.cpp
base58/decode.cpp

140
tests/ec/pubkey.cpp Normal file
View file

@ -0,0 +1,140 @@
#include <libeosio/ec.hpp>
#include <libeosio/WIF.hpp>
#include <vector>
#include <doctest.h>
TEST_CASE("ec::pubkey") {
struct testcase {
std::string name;
libeosio::ec_privkey_t priv;
libeosio::ec_pubkey_t expected;
};
std::vector<struct testcase> tests {
{
"valid #1",
// 5KWCD8zm3nHbYSZhq4rfnX3VxXGnKzcorwnqi9QoYvkyj6kSVYr
{
0xde, 0x4f, 0x8a, 0x59, 0x12, 0x2d, 0xee, 0x24,
0xf3, 0x75, 0x39, 0x00, 0xa5, 0x2c, 0x64, 0x58,
0x31, 0x5a, 0x1e, 0xea, 0x14, 0x30, 0x1b, 0x4d,
0x61, 0x6d, 0x2e, 0xab, 0x48, 0x48, 0xf3, 0xe1
},
// EOS6bmyyDPYt3ZXZF1VGKnKN4pbMuZPnFBoK7xkvXmyYUnXmBTSYq
{
0x02, 0xe1, 0x71, 0x50, 0x31, 0x19, 0x5b, 0xe8,
0xe0, 0x92, 0xec, 0x61, 0xfc, 0x93, 0xa8, 0x81,
0x2a, 0x1e, 0x83, 0x74, 0xc3, 0x5f, 0x5b, 0xe0,
0xfd, 0xb7, 0xd4, 0x32, 0xa6, 0xb9, 0x87, 0x61,
0x1b
}
},
{
"valid #2",
// 5KCjzBFK5jiUdwjwFzqymHbVoUEjhbK86CGiDKtuwXrP2xyDZLY
{
0xb6, 0xae, 0xfa, 0x9a, 0xc2, 0x1e, 0x56, 0xb8,
0x70, 0xa1, 0x14, 0x4e, 0x7f, 0xaa, 0x70, 0x30,
0x5b, 0x6d, 0xc4, 0x94, 0xd5, 0x05, 0xba, 0xf7,
0x77, 0x82, 0x93, 0xf2, 0x91, 0x15, 0x9b, 0x00
},
// EOS75mzwjLQAKaVdtGKe5MjfjQY9UJRZqa1iGcpkvZQ6jLE8ptE2j
{
0x03, 0x21, 0x05, 0x4d, 0x71, 0x0d, 0x08, 0x32,
0x67, 0xf9, 0xca, 0xa4, 0x16, 0x9e, 0x42, 0xca,
0xa6, 0xa2, 0x90, 0xe4, 0xbf, 0xe4, 0xc6, 0x79,
0x30, 0x69, 0x3d, 0xe7, 0x00, 0x76, 0x40, 0xea,
0x11
}
},
{
"valid #3",
// 5KfQfL9BKMsW1eNBYqFRJ7SgDAFzJcNH8UsXd1RWHdFUzUxJEKf
{
0xf3, 0x3b, 0xd8, 0x45, 0xaf, 0x53, 0x1e, 0x51,
0x88, 0x62, 0x03, 0x46, 0xa9, 0x13, 0x54, 0x5b,
0xf9, 0x6c, 0x95, 0x23, 0x9b, 0xbb, 0xbe, 0xd9,
0xff, 0x91, 0xde, 0x0d, 0x5a, 0x38, 0x9e, 0x8f
},
// EOS6DqV9RU4D5bN8TMg6G4Gcby56UxxBMfk21XotQ2TDuzDyA3QjN
{
0x02, 0xaf, 0xa0, 0x46, 0xa0, 0x36, 0x8a, 0xf4,
0x55, 0xd1, 0x60, 0x8d, 0xf8, 0x6d, 0x2f, 0x73,
0x24, 0xe4, 0x6e, 0xa9, 0xf2, 0x37, 0x47, 0x83,
0x6b, 0x74, 0x3a, 0x0e, 0xb6, 0x8f, 0x6b, 0xed,
0x51
}
},
{
"valid #4",
// 5KfdPV9x9BNqrDQoB4XfX8PyGyA6Nhwi6DtAG9KmEpyRNomNFoP
{
0xf3, 0xbb, 0x64, 0xc9, 0xc8, 0x8c, 0xb1, 0x8c,
0xc2, 0xbc, 0xd7, 0x03, 0x5c, 0x53, 0xa0, 0xd6,
0xeb, 0x53, 0xea, 0xb5, 0x20, 0x45, 0x92, 0xb1,
0xed, 0x9b, 0x1e, 0x6a, 0x01, 0xe9, 0x1a, 0xdd
},
// EOS7B1MBLsYbo7dppCwPG6L25AaS1wTGeaVtjLFKo8ue1Yo317G65
{
0x03, 0x2c, 0xe5, 0x7b, 0x76, 0x3d, 0xb6, 0x33,
0x10, 0xb2, 0x0b, 0x04, 0xb5, 0x32, 0xeb, 0xad,
0x0f, 0x27, 0x18, 0x77, 0xe8, 0x5a, 0x32, 0xc3,
0x76, 0x12, 0x1a, 0x85, 0xf3, 0x61, 0x3b, 0x5d,
0x4b
}
},
{
"valid #5",
// 5KRrtvA13uHmKVy6ofjEQQvcciGKeC2NTGYeoAGMYrNp56dn98y
{
0xd4, 0x78, 0xdb, 0x03, 0x2d, 0xf3, 0xfa, 0xad,
0x21, 0xa0, 0xdd, 0x36, 0xb1, 0xf5, 0xf5, 0x13,
0xc4, 0x8a, 0xe1, 0xa8, 0x37, 0xfa, 0x2e, 0x1b,
0xaa, 0x69, 0x2c, 0xf8, 0xf9, 0x5e, 0xb1, 0x87
},
// EOS54o7UHWAPXxHtrWS3uoZDJ6npud84R9w8XVMPYZNKhKiQgkQ1k
{
0x02, 0x17, 0x66, 0xc5, 0xb1, 0x59, 0xd7, 0xbe,
0x10, 0x82, 0xc5, 0x7f, 0xa3, 0xd2, 0xc8, 0x21,
0xd8, 0x48, 0x09, 0x34, 0xdf, 0x66, 0x61, 0x23,
0x6d, 0xb0, 0x85, 0x73, 0x77, 0xe7, 0xd8, 0xe8,
0x3b
}
},
{
"valid #6",
// 5JXVrPTX5WvZ524wEVYoThGFUJZkpkemQPLDa5MCrRo3MoGatyC
{
0x5d, 0x93, 0x6e, 0x47, 0x44, 0x35, 0x85, 0x33,
0xbc, 0xde, 0xff, 0xa7, 0x88, 0xe7, 0x9c, 0x6f,
0x53, 0xbc, 0x8e, 0xbf, 0x5e, 0x8e, 0xdb, 0x7e,
0x36, 0x2b, 0xdf, 0x11, 0xff, 0x77, 0x59, 0x98
},
// EOS7d5Nq7w2xscT6V6qZkDCJy2EnMFE8TGuQ9u2LyBE1fSZFiitrp
{
0x03, 0x68, 0x17, 0x1e, 0x3b, 0x22, 0x0a, 0x6b,
0x6b, 0xb6, 0xfa, 0x1b, 0x32, 0xdd, 0xce, 0xf6,
0x34, 0x7a, 0x34, 0x62, 0xb7, 0xf9, 0xea, 0x1c,
0xa2, 0xf9, 0xf0, 0x2c, 0x50, 0x3e, 0xff, 0xf3,
0xfa
}
}
};
libeosio::ec_init();
for(auto it = tests.begin(); it != tests.end(); it++) {
SUBCASE(it->name.c_str()) {
libeosio::ec_pubkey_t result;
CHECK( libeosio::ec_get_publickey(&it->priv, &result) == 0 );
CHECK( result == it->expected );
}
}
libeosio::ec_shutdown();
}