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Add -G option to keyconv, to generate an address and display the hex

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public key.
This commit is contained in:
samr7
2012-07-03 23:34:28 -07:00
parent b6ca74fb9e
commit b60c5b1ee5
1 changed files with 41 additions and 9 deletions
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48
keyconv.c
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@@ -26,6 +26,7 @@ usage(const char *progname)
fprintf(stderr, fprintf(stderr,
"Vanitygen keyconv %s\n" "Vanitygen keyconv %s\n"
"Usage: %s [-8] [-e|-E <password>] [-c <key>] [<key>]\n" "Usage: %s [-8] [-e|-E <password>] [-c <key>] [<key>]\n"
"-G Generate a key pair and output the full public key\n"
"-8 Output key in PKCS#8 form\n" "-8 Output key in PKCS#8 form\n"
"-e Encrypt output key, prompt for password\n" "-e Encrypt output key, prompt for password\n"
"-E <password> Encrypt output key with <password> (UNSAFE)\n" "-E <password> Encrypt output key with <password> (UNSAFE)\n"
@@ -50,10 +51,11 @@ main(int argc, char **argv)
int pkcs8 = 0; int pkcs8 = 0;
int pass_prompt = 0; int pass_prompt = 0;
int verbose = 0; int verbose = 0;
int generate = 0;
int opt; int opt;
int res; int res;
while ((opt = getopt(argc, argv, "8E:ec:v")) != -1) { while ((opt = getopt(argc, argv, "8E:ec:vG")) != -1) {
switch (opt) { switch (opt) {
case '8': case '8':
pkcs8 = 1; pkcs8 = 1;
@@ -81,12 +83,38 @@ main(int argc, char **argv)
case 'v': case 'v':
verbose = 1; verbose = 1;
break; break;
case 'G':
generate = 1;
break;
default: default:
usage(argv[0]); usage(argv[0]);
return 1; return 1;
} }
} }
OpenSSL_add_all_algorithms();
pkey = EC_KEY_new_by_curve_name(NID_secp256k1);
if (generate) {
unsigned char *pend = (unsigned char *) pbuf;
addrtype = 0;
privtype = 128;
EC_KEY_generate_key(pkey);
res = i2o_ECPublicKey(pkey, &pend);
fprintf(stderr, "Pubkey (hex): ");
dumphex((unsigned char *)pbuf, res);
fprintf(stderr, "Privkey (hex): ");
dumpbn(EC_KEY_get0_private_key(pkey));
vg_encode_address(EC_KEY_get0_public_key(pkey),
EC_KEY_get0_group(pkey),
addrtype, ecprot);
printf("Address: %s\n", ecprot);
vg_encode_privkey(pkey, privtype, ecprot);
printf("Privkey: %s\n", ecprot);
return 0;
}
if (optind >= argc) { if (optind >= argc) {
res = fread(pbuf, 1, sizeof(pbuf) - 1, stdin); res = fread(pbuf, 1, sizeof(pbuf) - 1, stdin);
pbuf[res] = '\0'; pbuf[res] = '\0';
@@ -95,10 +123,6 @@ main(int argc, char **argv)
key_in = argv[optind]; key_in = argv[optind];
} }
OpenSSL_add_all_algorithms();
pkey = EC_KEY_new_by_curve_name(NID_secp256k1);
res = vg_decode_privkey_any(pkey, &privtype, key_in, NULL); res = vg_decode_privkey_any(pkey, &privtype, key_in, NULL);
if (res < 0) { if (res < 0) {
if (EVP_read_pw_string(pwbuf, sizeof(pwbuf), if (EVP_read_pw_string(pwbuf, sizeof(pwbuf),
@@ -113,7 +137,8 @@ main(int argc, char **argv)
} }
if (key2_in) { if (key2_in) {
BIGNUM bntmp; BN_CTX *bnctx;
BIGNUM bntmp, bntmp2;
EC_KEY *pkey2; EC_KEY *pkey2;
pkey2 = EC_KEY_new_by_curve_name(NID_secp256k1); pkey2 = EC_KEY_new_by_curve_name(NID_secp256k1);
@@ -131,12 +156,19 @@ main(int argc, char **argv)
return 1; return 1;
} }
BN_init(&bntmp); BN_init(&bntmp);
BN_add(&bntmp, BN_init(&bntmp2);
bnctx = BN_CTX_new();
EC_GROUP_get_order(EC_KEY_get0_group(pkey), &bntmp2, NULL);
BN_mod_add(&bntmp,
EC_KEY_get0_private_key(pkey), EC_KEY_get0_private_key(pkey),
EC_KEY_get0_private_key(pkey2)); EC_KEY_get0_private_key(pkey2),
&bntmp2,
bnctx);
vg_set_privkey(&bntmp, pkey); vg_set_privkey(&bntmp, pkey);
EC_KEY_free(pkey2); EC_KEY_free(pkey2);
BN_clear_free(&bntmp); BN_clear_free(&bntmp);
BN_clear_free(&bntmp2);
BN_CTX_free(bnctx);
} }
if (pass_prompt) { if (pass_prompt) {