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comparison lib/Test/Nginx/HTTP3.pm @ 1933:9bafe7cddd3c

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Tests: improved QUIC key update tests with old keys. On unsuccessful protection removal, it is now retried with old keys. Otherwise, old keys are removed to ensure they're no longer in use.
author Sergey Kandaurov <pluknet@nginx.com>
date Mon, 21 Aug 2023 17:26:47 +0400
parents 0e8b5b442b1d
children 4d13c9e74d04
comparison
equal deleted inserted replaced
1932:b68471aee5ad 1933:9bafe7cddd3c
1719 my $ciphertext = substr($buf, $offpn + $pnl, $val - 16 - $pnl); 1719 my $ciphertext = substr($buf, $offpn + $pnl, $val - 16 - $pnl);
1720 my $tag = substr($buf, $offpn + $val - 16, 16); 1720 my $tag = substr($buf, $offpn + $val - 16, 16);
1721 my ($f, @args) = decrypt_aead_f($level, $self->{cipher}); 1721 my ($f, @args) = decrypt_aead_f($level, $self->{cipher});
1722 my $plaintext = $f->(@args, 1722 my $plaintext = $f->(@args,
1723 $self->{keys}[$level]{r}{key}, $nonce, $ad, $ciphertext, $tag); 1723 $self->{keys}[$level]{r}{key}, $nonce, $ad, $ciphertext, $tag);
1724 if ($level == 3 && $self->{keys}[4]) {
1725 if (!defined $plaintext) {
1726 # in-flight packets might be protected with old keys
1727 $nonce = substr(pack("x12") . pack("N", $pn), -12)
1728 ^ $self->{keys}[4]{r}{iv};
1729 $plaintext = $f->(@args, $self->{keys}[4]{r}{key},
1730 $nonce, $ad, $ciphertext, $tag);
1731 } else {
1732 # remove old keys after unprotected with new keys
1733 splice @{$self->{keys}}, 4, 1;
1734 }
1735 }
1724 return if !defined $plaintext; 1736 return if !defined $plaintext;
1725 Test::Nginx::log_core('||', 1737 Test::Nginx::log_core('||',
1726 "pn = $pn, level = $level, length = " . length($plaintext)); 1738 "pn = $pn, level = $level, length = " . length($plaintext));
1727 1739
1728 $self->{pn}[1][$level] = $pn; 1740 $self->{pn}[1][$level] = $pn;
1882 for my $direction ('r', 'w') { 1894 for my $direction ('r', 'w') {
1883 $prk = $self->{keys}[3]{$direction}{prk}; 1895 $prk = $self->{keys}[3]{$direction}{prk};
1884 $prk = hkdf_expand_label("tls13 quic ku", $hash, $hlen, $prk); 1896 $prk = hkdf_expand_label("tls13 quic ku", $hash, $hlen, $prk);
1885 $key = hkdf_expand_label("tls13 quic key", $hash, $klen, $prk); 1897 $key = hkdf_expand_label("tls13 quic key", $hash, $klen, $prk);
1886 $iv = hkdf_expand_label("tls13 quic iv", $hash, 12, $prk); 1898 $iv = hkdf_expand_label("tls13 quic iv", $hash, 12, $prk);
1899 $self->{keys}[4]{$direction}{key} =
1900 $self->{keys}[3]{$direction}{key};
1901 $self->{keys}[4]{$direction}{iv} =
1902 $self->{keys}[3]{$direction}{iv};
1887 $self->{keys}[3]{$direction}{prk} = $prk; 1903 $self->{keys}[3]{$direction}{prk} = $prk;
1888 $self->{keys}[3]{$direction}{key} = $key; 1904 $self->{keys}[3]{$direction}{key} = $key;
1889 $self->{keys}[3]{$direction}{iv} = $iv; 1905 $self->{keys}[3]{$direction}{iv} = $iv;
1890 } 1906 }
1891 } 1907 }