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@@ -393,7 +393,7 @@ rsa_ed25519_crosscert_check(const uint8_t *crosscert,
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}
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const uint32_t expiration_date = rsa_ed_crosscert_get_expiration(cc);
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- const uint64_t expiration_time = expiration_date * 3600;
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+ const uint64_t expiration_time = ((uint64_t)expiration_date) * 3600;
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if (reject_if_expired_before < 0 ||
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expiration_time < (uint64_t)reject_if_expired_before) {
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