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Reject surjection proofs with trailing garbage

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This commit is contained in:
Tim Ruffing 2018-05-23 14:56:14 +02:00 committed by Andrew Poelstra
parent f723bf5b37
commit c908c97d67
1 changed files with 1 additions and 1 deletions
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2
src/modules/surjection/main_impl.h
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@ -56,7 +56,7 @@ int secp256k1_surjectionproof_parse(const secp256k1_context* ctx, secp256k1_surj
}
signature_len = 32 * (1 + secp256k1_count_bits_set(&input[2], (n_inputs + 7) / 8));
if (inputlen < 2 + (n_inputs + 7) / 8 + signature_len) {
if (inputlen != 2 + (n_inputs + 7) / 8 + signature_len) {
return 0;
}
proof->n_inputs = n_inputs;