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examples: do not retry generating seckey randomness in musig

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Jonas Nick
2024-10-13 19:10:45 +00:00
parent 70b6be1834
commit e8908221a4
1 changed files with 11 additions and 8 deletions
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19
examples/musig.c
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@@ -38,14 +38,17 @@ struct signer {
/* Create a key pair, store it in signer_secrets->keypair and signer->pubkey */ /* Create a key pair, store it in signer_secrets->keypair and signer->pubkey */
static int create_keypair(const secp256k1_context* ctx, struct signer_secrets *signer_secrets, struct signer *signer) { static int create_keypair(const secp256k1_context* ctx, struct signer_secrets *signer_secrets, struct signer *signer) {
unsigned char seckey[32]; unsigned char seckey[32];
while (1) {
if (!fill_random(seckey, sizeof(seckey))) { if (!fill_random(seckey, sizeof(seckey))) {
printf("Failed to generate randomness\n"); printf("Failed to generate randomness\n");
return 0; return 0;
} }
if (secp256k1_keypair_create(ctx, &signer_secrets->keypair, seckey)) { /* Try to create a keypair with a valid context. This only fails if the
break; * secret key is zero or out of range (greater than secp256k1's order). Note
} * that the probability of this occurring is negligible with a properly
* functioning random number generator. */
if (!secp256k1_keypair_create(ctx, &signer_secrets->keypair, seckey)) {
return 0;
} }
if (!secp256k1_keypair_pub(ctx, &signer->pubkey, &signer_secrets->keypair)) { if (!secp256k1_keypair_pub(ctx, &signer->pubkey, &signer_secrets->keypair)) {
return 0; return 0;