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-ensure label has no zero bytes

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Özgür Kesim 2022-03-08 11:47:51 +01:00
parent ab3868f83b
commit cd5ee2338c
Signed by: oec
GPG Key ID: 3D76A56D79EDD9D7
1 changed files with 6 additions and 1 deletions
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7
src/util/age_restriction.c
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@ -184,7 +184,12 @@ TALER_age_commitment_derive (
new->proof.num, new->proof.num,
struct TALER_AgeCommitmentPrivateKeyP); struct TALER_AgeCommitmentPrivateKeyP);
memcpy (label, &salt, sizeof(salt)); {
/* Because GNUNET_CRYPTO_ecdsa_public_key_derive expects char * (and calls
* strlen on it), we must avoid 0's in the label. */
uint64_t nz_salt = salt | 0x8040201008040201;
memcpy (label, &nz_salt, sizeof(nz_salt));
}
/* 1. Derive the public keys */ /* 1. Derive the public keys */
for (size_t i = 0; i < orig->commitment.num; i++) for (size_t i = 0; i < orig->commitment.num; i++)