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LibTLS: ASN1 parse_utc_time handle pre 2000 years

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In this format the year is specified using two digits. In the case that
these digits are 50 or more, we should assume that the year is in
1950-1999. If it is 49 or less, the year is 2000-2049.

This is specified in RFC5280 section 4.1.2.5.1.
This commit is contained in:
Michiel Visser
2022-02-21 22:15:41 +01:00
committed by Ali Mohammad Pur
parent fea5aeda0b
commit f8ce0eb648
1 changed files with 3 additions and 1 deletions
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4
Userland/Libraries/LibCrypto/ASN1/ASN1.cpp
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@@ -110,7 +110,9 @@ Optional<Core::DateTime> parse_utc_time(StringView time)
return {};
}
auto full_year = (Core::DateTime::now().year() / 100) * 100 + year_in_century.value();
// RFC5280 section 4.1.2.5.1.
auto full_year = year_in_century.value();
full_year += (full_year < 50) ? 2000 : 1900;
auto full_seconds = seconds.value_or(0);
// FIXME: Handle offsets!