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

public key.
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commit b60c5b1ee532f6613fcf964bbf707cdc3fe58e70 1 parent b6ca74f
samr7 authored
Showing with 41 additions and 9 deletions.
  1. +41 −9 keyconv.c
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50 keyconv.c
@@ -26,6 +26,7 @@ usage(const char *progname)
fprintf(stderr,
"Vanitygen keyconv %s\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"
"-e Encrypt output key, prompt for password\n"
"-E <password> Encrypt output key with <password> (UNSAFE)\n"
@@ -50,10 +51,11 @@ main(int argc, char **argv)
int pkcs8 = 0;
int pass_prompt = 0;
int verbose = 0;
+ int generate = 0;
int opt;
int res;
- while ((opt = getopt(argc, argv, "8E:ec:v")) != -1) {
+ while ((opt = getopt(argc, argv, "8E:ec:vG")) != -1) {
switch (opt) {
case '8':
pkcs8 = 1;
@@ -81,12 +83,38 @@ main(int argc, char **argv)
case 'v':
verbose = 1;
break;
+ case 'G':
+ generate = 1;
+ break;
default:
usage(argv[0]);
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) {
res = fread(pbuf, 1, sizeof(pbuf) - 1, stdin);
pbuf[res] = '\0';
@@ -95,10 +123,6 @@ main(int argc, char **argv)
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);
if (res < 0) {
if (EVP_read_pw_string(pwbuf, sizeof(pwbuf),
@@ -113,7 +137,8 @@ main(int argc, char **argv)
}
if (key2_in) {
- BIGNUM bntmp;
+ BN_CTX *bnctx;
+ BIGNUM bntmp, bntmp2;
EC_KEY *pkey2;
pkey2 = EC_KEY_new_by_curve_name(NID_secp256k1);
@@ -131,12 +156,19 @@ main(int argc, char **argv)
return 1;
}
BN_init(&bntmp);
- BN_add(&bntmp,
- EC_KEY_get0_private_key(pkey),
- EC_KEY_get0_private_key(pkey2));
+ 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(pkey2),
+ &bntmp2,
+ bnctx);
vg_set_privkey(&bntmp, pkey);
EC_KEY_free(pkey2);
BN_clear_free(&bntmp);
+ BN_clear_free(&bntmp2);
+ BN_CTX_free(bnctx);
}
if (pass_prompt) {
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