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add Litecoin address and compressed address support

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This commit is contained in:
Scott Alfter
2013-05-16 10:29:03 -07:00
parent cd1a728243
commit 7ee7d9b0aa
5 changed files with 81 additions and 11 deletions
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44
util.c
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@@ -259,6 +259,30 @@ vg_encode_address(const EC_POINT *ppoint, const EC_GROUP *pgroup,
vg_b58_encode_check(binres, sizeof(binres), result);
}
void
vg_encode_address_compressed(const EC_POINT *ppoint, const EC_GROUP *pgroup,
int addrtype, char *result)
{
unsigned char eckey_buf[128], *pend;
unsigned char binres[21] = {0,};
unsigned char hash1[32];
pend = eckey_buf;
EC_POINT_point2oct(pgroup,
ppoint,
POINT_CONVERSION_COMPRESSED,
eckey_buf,
sizeof(eckey_buf),
NULL);
pend = eckey_buf + 0x21;
binres[0] = addrtype;
SHA256(eckey_buf, pend - eckey_buf, hash1);
RIPEMD160(hash1, sizeof(hash1), &binres[1]);
vg_b58_encode_check(binres, sizeof(binres), result);
}
void
vg_encode_script_address(const EC_POINT *ppoint, const EC_GROUP *pgroup,
int addrtype, char *result)
@@ -306,6 +330,26 @@ vg_encode_privkey(const EC_KEY *pkey, int addrtype, char *result)
vg_b58_encode_check(eckey_buf, 33, result);
}
void
vg_encode_privkey_compressed(const EC_KEY *pkey, int addrtype, char *result)
{
unsigned char eckey_buf[128];
const BIGNUM *bn;
int nbytes;
bn = EC_KEY_get0_private_key(pkey);
eckey_buf[0] = addrtype;
nbytes = BN_num_bytes(bn);
assert(nbytes <= 32);
if (nbytes < 32)
memset(eckey_buf + 1, 0, 32 - nbytes);
BN_bn2bin(bn, &eckey_buf[33 - nbytes]);
eckey_buf[nbytes+1] = 1;
vg_b58_encode_check(eckey_buf, 34, result);
}
int
vg_set_privkey(const BIGNUM *bnpriv, EC_KEY *pkey)
{