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add --mine-pubkey

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Signed-off-by: William Casarin <jb55@jb55.com>
This commit is contained in:
William Casarin 2022-08-28 14:34:58 -07:00
parent 4fd0f73c27
commit e8bba43f3e
2 changed files with 26 additions and 5 deletions
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27
nostril.c
View File

@ -26,6 +26,7 @@
#define HAS_ENVELOPE (1<<3) #define HAS_ENVELOPE (1<<3)
#define HAS_ENCRYPT (1<<4) #define HAS_ENCRYPT (1<<4)
#define HAS_DIFFICULTY (1<<5) #define HAS_DIFFICULTY (1<<5)
#define HAS_MINE_PUBKEY (1<<6)
struct key { struct key {
secp256k1_keypair pair; secp256k1_keypair pair;
@ -239,7 +240,7 @@ static int decode_key(secp256k1_context *ctx, const char *secstr, struct key *ke
return create_key(ctx, key); return create_key(ctx, key);
} }
static int generate_key(secp256k1_context *ctx, struct key *key) static int generate_key(secp256k1_context *ctx, struct key *key, int *difficulty)
{ {
/* If the secret key is zero or out of range (bigger than secp256k1's /* If the secret key is zero or out of range (bigger than secp256k1's
* order), we try to sample a new key. Note that the probability of this * order), we try to sample a new key. Note that the probability of this
@ -248,9 +249,22 @@ static int generate_key(secp256k1_context *ctx, struct key *key)
return 0; return 0;
} }
if (difficulty == NULL) {
return create_key(ctx, key); return create_key(ctx, key);
} }
while (1) {
if (!fill_random(key->secret, sizeof(key->secret)))
continue;
if (!create_key(ctx, key))
return 0;
if (count_leading_zero_bits(key->pubkey) >= *difficulty)
return 1;
}
}
static int init_secp_context(secp256k1_context **ctx) static int init_secp_context(secp256k1_context **ctx)
{ {
@ -449,6 +463,8 @@ static int parse_args(int argc, const char *argv[], struct args *args, struct no
fprintf(stderr, "couldn't add tag '%s' '%s'\n", arg, arg2); fprintf(stderr, "couldn't add tag '%s' '%s'\n", arg, arg2);
return 0; return 0;
} }
} else if (!strcmp(arg, "--mine-pubkey")) {
args->flags |= HAS_MINE_PUBKEY;
} else if (!strcmp(arg, "--pow")) { } else if (!strcmp(arg, "--pow")) {
if (args->tags) { if (args->tags) {
fprintf(stderr, "can't combine --tags and --pow (yet)\n"); fprintf(stderr, "can't combine --tags and --pow (yet)\n");
@ -687,7 +703,12 @@ int main(int argc, const char *argv[])
return 8; return 8;
} }
} else { } else {
if (!generate_key(ctx, &key)) { int *difficulty = NULL;
if ((args.flags & HAS_DIFFICULTY) && (args.flags & HAS_MINE_PUBKEY)) {
difficulty = &args.difficulty;
}
if (!generate_key(ctx, &key, difficulty)) {
fprintf(stderr, "could not generate key\n"); fprintf(stderr, "could not generate key\n");
return 4; return 4;
} }
@ -706,7 +727,7 @@ int main(int argc, const char *argv[])
// set the event's pubkey // set the event's pubkey
memcpy(ev.pubkey, key.pubkey, 32); memcpy(ev.pubkey, key.pubkey, 32);
if (args.flags & HAS_DIFFICULTY) { if (args.flags & HAS_DIFFICULTY && !(args.flags & HAS_MINE_PUBKEY)) {
if (!mine_event(&ev, args.difficulty)) { if (!mine_event(&ev, args.difficulty)) {
fprintf(stderr, "error when mining id\n"); fprintf(stderr, "error when mining id\n");
return 22; return 22;

2
shell.nix
View File

@ -1,5 +1,5 @@
{ pkgs ? import <nixpkgs> {} }: { pkgs ? import <nixpkgs> {} }:
with pkgs; with pkgs;
mkShell { mkShell {
buildInputs = [ secp256k1 gdb ]; buildInputs = [ secp256k1 gdb autoreconfHook ];
} }