$ docker run --rm --name validator-libsodium-usage-php83-r19-box-seal-open-roundtrip-2732 -t --mount type=bind,src=/tmp/validator-status-libsodium-usage-php83-r19-box-seal-open-roundtrip,dst=/validator/status validator-libsodium-shared bash -lc 'set -euo pipefail
/validator/tests/_shared/install_override_debs.sh
exec /validator/tests/_shared/run_library_tests.sh "$@"' validator-testcase libsodium usage-php83-r19-box-seal-open-roundtrip -- bash -c 'PS4=$1; shift; set -x; source "$@"' validator-xtrace '__VALIDATOR_XTRACE__ ' /validator/tests/libsodium/tests/cases/usage/usage-php83-r19-box-seal-open-roundtrip.sh
no override packages found; continuing with apt originals
$kp = sodium_crypto_box_keypair();
$pk = sodium_crypto_box_publickey($kp);
$msg = "r19 php sealed box payload";
$ct = sodium_crypto_box_seal($msg, $pk);
$expected = strlen($msg) + SODIUM_CRYPTO_BOX_SEALBYTES;
if (strlen($ct) !== $expected) {
    fwrite(STDERR, "ct_len=" . strlen($ct) . " expected=" . $expected . "\n");
    exit(1);
}
$pt = sodium_crypto_box_seal_open($ct, $kp);
if ($pt !== $msg) { fwrite(STDERR, "pt mismatch\n"); exit(1); }
echo "ok seal ct=", strlen($ct), " seal_overhead=", SODIUM_CRYPTO_BOX_SEALBYTES, PHP_EOL;
'
ok seal ct=74 seal_overhead=48