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74 lines
3.2 KiB
74 lines
3.2 KiB
8 months ago
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From b6d7cdc2bad0eadbca73f3486917f0ec7a475814 Mon Sep 17 00:00:00 2001
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From: Kazuki Yamaguchi <k@rhe.jp>
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Date: Tue, 29 Aug 2023 19:46:02 +0900
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Subject: [PATCH] [ruby/openssl] ssl: use ffdhe2048 from RFC 7919 as the
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default DH group parameters
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In TLS 1.2 or before, if DH group parameters for DHE are not supplied
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with SSLContext#tmp_dh= or #tmp_dh_callback=, we currently use the
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self-generated parameters added in commit https://github.com/ruby/openssl/commit/bb3399a61c03 ("support 2048
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bit length DH-key", 2016-01-15) as the fallback.
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While there is no known weakness in the current parameters, it would be
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a good idea to switch to pre-defined, more well audited parameters.
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This also allows the fallback to work in the FIPS mode.
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The PEM encoding was derived with:
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# RFC 7919 Appendix A.1. ffdhe2048
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print OpenSSL::PKey.read(OpenSSL::ASN1::Sequence([OpenSSL::ASN1::Integer((<<-END).split.join.to_i(16)), OpenSSL::ASN1::Integer(2)]).to_der).to_pem
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FFFFFFFF FFFFFFFF ADF85458 A2BB4A9A AFDC5620 273D3CF1
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D8B9C583 CE2D3695 A9E13641 146433FB CC939DCE 249B3EF9
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7D2FE363 630C75D8 F681B202 AEC4617A D3DF1ED5 D5FD6561
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2433F51F 5F066ED0 85636555 3DED1AF3 B557135E 7F57C935
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984F0C70 E0E68B77 E2A689DA F3EFE872 1DF158A1 36ADE735
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30ACCA4F 483A797A BC0AB182 B324FB61 D108A94B B2C8E3FB
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B96ADAB7 60D7F468 1D4F42A3 DE394DF4 AE56EDE7 6372BB19
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0B07A7C8 EE0A6D70 9E02FCE1 CDF7E2EC C03404CD 28342F61
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9172FE9C E98583FF 8E4F1232 EEF28183 C3FE3B1B 4C6FAD73
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3BB5FCBC 2EC22005 C58EF183 7D1683B2 C6F34A26 C1B2EFFA
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886B4238 61285C97 FFFFFFFF FFFFFFFF
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END
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https://github.com/ruby/openssl/commit/a5527cb4f4
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---
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ext/openssl/lib/openssl/ssl.rb | 18 +++++++++---------
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1 file changed, 9 insertions(+), 9 deletions(-)
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diff --git a/ext/openssl/lib/openssl/ssl.rb b/ext/openssl/lib/openssl/ssl.rb
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index ea8bb2a18e533..94be6ba80b894 100644
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--- a/ext/openssl/lib/openssl/ssl.rb
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+++ b/ext/openssl/lib/openssl/ssl.rb
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@@ -31,21 +31,21 @@ class SSLContext
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}
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if defined?(OpenSSL::PKey::DH)
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- DEFAULT_2048 = OpenSSL::PKey::DH.new <<-_end_of_pem_
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+ DH_ffdhe2048 = OpenSSL::PKey::DH.new <<-_end_of_pem_
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-----BEGIN DH PARAMETERS-----
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-MIIBCAKCAQEA7E6kBrYiyvmKAMzQ7i8WvwVk9Y/+f8S7sCTN712KkK3cqd1jhJDY
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-JbrYeNV3kUIKhPxWHhObHKpD1R84UpL+s2b55+iMd6GmL7OYmNIT/FccKhTcveab
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-VBmZT86BZKYyf45hUF9FOuUM9xPzuK3Vd8oJQvfYMCd7LPC0taAEljQLR4Edf8E6
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-YoaOffgTf5qxiwkjnlVZQc3whgnEt9FpVMvQ9eknyeGB5KHfayAc3+hUAvI3/Cr3
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-1bNveX5wInh5GDx1FGhKBZ+s1H+aedudCm7sCgRwv8lKWYGiHzObSma8A86KG+MD
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-7Lo5JquQ3DlBodj3IDyPrxIv96lvRPFtAwIBAg==
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+MIIBCAKCAQEA//////////+t+FRYortKmq/cViAnPTzx2LnFg84tNpWp4TZBFGQz
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++8yTnc4kmz75fS/jY2MMddj2gbICrsRhetPfHtXV/WVhJDP1H18GbtCFY2VVPe0a
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+87VXE15/V8k1mE8McODmi3fipona8+/och3xWKE2rec1MKzKT0g6eXq8CrGCsyT7
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+YdEIqUuyyOP7uWrat2DX9GgdT0Kj3jlN9K5W7edjcrsZCwenyO4KbXCeAvzhzffi
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+7MA0BM0oNC9hkXL+nOmFg/+OTxIy7vKBg8P+OxtMb61zO7X8vC7CIAXFjvGDfRaD
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+ssbzSibBsu/6iGtCOGEoXJf//////////wIBAg==
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-----END DH PARAMETERS-----
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_end_of_pem_
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- private_constant :DEFAULT_2048
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+ private_constant :DH_ffdhe2048
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DEFAULT_TMP_DH_CALLBACK = lambda { |ctx, is_export, keylen| # :nodoc:
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warn "using default DH parameters." if $VERBOSE
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- DEFAULT_2048
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+ DH_ffdhe2048
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}
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end
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